Quiz - biology - Locomotion and Movements-A & R questions

Q1. Assertion: All locomotions are movements, but all movements are not locomotion.
Reason: Such voluntary movements that result in a change of place or location are called locomotion. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q2. Assertion: Locomotion is generally for the search of food, shelter, a mate, suitable breeding grounds, favorable climatic conditions, or to escape from predators.
Reason: Hydra can use its tentacles for capturing its prey and also use them for locomotion. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q3. Assertion: Amoeboid movement is effected by pseudopodia formed by the streaming of protoplasm.
Reason: Cytoskeletal elements like microfilaments are involved in amoeboid movement. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q4. Assertion: The coordinated movements of cilia in the trachea help us in removing dust particles.
Reason: The coordinated movement of cilia is controlled by the nervous system. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q5. Assertion: The passage of ova through the female reproductive tract is also facilitated by ciliary movement.
Reason: The coordinated movement of cilia is required for the movement of ova in the female reproductive tract. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q6. Assertion: Locomotion requires a perfectly coordinated activity of the muscular, skeletal, and neural systems.
Reason: Locomotion is controlled voluntarily by the CNS. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q7. Assertion: Skeletal muscles are voluntary in nature.
Reason: The contraction of skeletal muscles is controlled by the motor area of the cerebral cortex. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q8. Assertion: Visceral muscles are also called smooth muscles.
Reason: Their activities are not under the voluntary control of the nervous system. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q9. Assertion: Cardiac muscles are autonomous and involuntary in nature.
Reason: The nervous system does not control their activities directly. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q10. Assertion: Cardiac muscles are structurally striated.
Reason: Cardiac muscles are uninucleated and branched. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q11. Assertion: The dark band of muscle is also called the 'A' or Anisotropic band.
Reason: The dark band contains thick myosin filaments as well as thin actin filaments. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q12. Assertion: Each 'F' (filamentous) actin is a polymer of 'G' (globular) actin.
Reason: 'G' actin is a globular protein. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q13. Assertion: In the resting state, a subunit of troponin masks the active binding site for myosin on the actin filaments.
Reason: The complex protein troponin is distributed at regular intervals on the tropomyosin. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q14. Assertion: The globular head of meromyosin acts as an ATPase enzyme.
Reason: The head of meromyosin is a tertiary structure of a protein. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q15. Assertion: Calcium ions are essential for muscle contraction.
Reason: Calcium ions are required for ATPase activity. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q16. Assertion: The junction between a motor neuron and the sarcolemma of a muscle fiber is called the motor end plate.
Reason: Muscle contraction is initiated by a signal sent by the central nervous system via a motor neuron. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q17. Assertion: A neural signal reaching a neuromuscular junction stimulates the release of a neurotransmitter, which generates an action potential in the sarcolemma.
Reason: The action potential spreads through the cardiac muscle fiber and increases the intracellular $$Ca^{2+}$$ level by the influx of $$Ca^{2+}$$ from the extracellular fluid (ECF). Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q18. Assertion: Muscle fatigue is caused by the accumulation of lactic acid.
Reason: Lactic acid is formed by the anaerobic breakdown of glycogen. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q19. Assertion: White muscle fibers are faster than red muscle fibers.
Reason: White muscle fibers depend on anaerobic processes for energy. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q20. Assertion: The A-band contains both myosin and actin filaments.
Reason: In a resting state, the edges of the thin filaments on either side of the thick filaments partially overlap the free end of the thick filament. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q21. Assertion: Locomotion is a voluntary movement.
Reason: Cells of the human body exhibit three types of movements: amoeboid, ciliary, and muscular. Internal tubular organs lined by ciliated epithelium show ciliary movement, while limbs and the tongue show muscular movement. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q22. Assertion: Striated muscles are directly under the voluntary control of the nervous system.
Reason: Striated muscles are primarily involved in locomotory actions and changes of body posture. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q23. Assertion: Fascicles are held together by a common collagenous connective tissue layer called fascia.
Reason: A fascicle is also referred to as a syncytium. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q24. Assertion: A striped muscle fiber is a syncytium, as the sarcoplasm contains many nuclei.
Reason: The sarcoplasmic reticulum of a striped muscle fiber is the storehouse of $$Ca^{2+}$$ ions. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q25. Assertion: The band formed by only actin protein is called the anisotropic band.
Reason: The band formed by only myosin protein is called the isotropic band. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q26. Assertion: A sarcomere is the functional unit of contraction present between two successive 'Z' lines.
Reason: The central part of the myosin filament, not overlapped by the thin filaments, is called the 'H' zone. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q27. Assertion: The $$11^{th}$$ and $$12^{th}$$ pairs of ribs are not connected ventrally, and therefore they are called floating ribs.
Reason: The thoracic vertebrae, sternum, and ribs together form the rib cage. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q28. Assertion: The bones of the limbs along with the girdles form the appendicular skeleton.
Reason: Each human arm has 30 bones. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q29. Assertion: The femur is the longest bone of the human body.
Reason: The femur is formed by the fusion of the tibia and fibula. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q30. Assertion: Fibrous joints do not allow any movement.
Reason: The bones involved in a fibrous joint are joined together with the help of cartilage. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q31. Assertion: Cells of the human body exhibit three main types of movements: amoeboid, ciliary, and muscular.
Reason: Macrophages and leucocytes show amoeboid movement, internal tubular organs lined by ciliated epithelium show ciliary movement, and limbs and the tongue show muscular movement. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q32. Assertion: Red muscle fibers can also be called aerobic muscles.
Reason: Red fibers contain plenty of mitochondria which can utilize a large amount of oxygen stored in them. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q33. Assertion: Osteoporosis is characterized by decreased bone mass and increased chances of fractures.
Reason: Estrogen levels increase in old age and are excreted with urine. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q34. Assertion: A sarcomere is the distance between two I-bands.
Reason: A sarcomere is the unit of unstripped muscle. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q35. Assertion: Cardiac muscles are the muscles of the heart.
Reason: Heart muscles are striated, branched, and involuntary. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q36. Assertion: All movements are not locomotion.
Reason: Only some movements result in a change of place or location. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q37. Assertion: Muscle contraction is initiated by a signal sent by the central nervous system via a sensory neuron.
Reason: A sensory neuron along with the muscle fiber connected to it constitutes a motor unit. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q38. Assertion: Arthritis is the inflammation of joints.
Reason: Gout is the inflammation of joints due to the accumulation of uric acid. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q39. Assertion: 40-50% of human body weight consists of muscles.
Reason: Muscles may be skeletal, smooth (involuntary), or cardiac, and they get attached to the skeleton. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q40. Assertion: The movement of body parts serves to change the body posture.
Reason: Body parts move in relation to the body axis. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q41. Assertion: There are similarities between the locomotion of unicellular organisms and multicellular animals.
Reason: Ciliary, flagellar, and amoeboid movements occur in unicellular organisms. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q42. Assertion: The skeleton helps in blood cell formation.
Reason: Blood flows through the skeleton. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q43. Assertion: A muscle as a whole does not obey the All-or-None law.
Reason: Each muscle fiber contracts maximally whenever it contracts. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q44. Assertion: Calcium is required for skeletal muscle contraction.
Reason: Calcium influx releases acetylcholine at the neuromuscular junction. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q45. Assertion: A sarcomere consists of one 'A-band' and two half 'I-bands'.
Reason: A sarcomere has half 'A-band' and two half 'I-bands'. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q46. Assertion: The sheath covering the bundle of muscle fibers is called perimysium.
Reason: Perimysium is a sheath of connective tissue. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q47. Assertion: The Cori cycle prevents lactic acidosis in muscles under anaerobic conditions.
Reason: The Cori cycle converts the lactic acid of muscles into glucose in the liver. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q48. Assertion: The phalangeal formula for the human hand is 2, 3, 3, 3, 3.
Reason: The phalangeal parts depend on the number of tarsals. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q49. Assertion: The dark band on a myofibril is the anisotropic band.
Reason: The light band on a myofibril is the isotropic band. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q50. Assertion: Myosin is not a part of the thin filament.
Reason: Meromyosin polymerizes to form myosin. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q51. Assertion: The mechanism of muscle contraction can be explained by the sliding-filament theory.
Reason: Muscular contraction occurs by the sliding of thick filaments over the thin filaments. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q52. Assertion: The biceps and triceps are antagonistic in nature.
Reason: The biceps flexes the arm, whereas the triceps straightens it. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q53. Assertion: The human skull is dicondylic.
Reason: The human skull articulates with the superior region of the vertebral column with two occipital condyles. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q54. Assertion: Fibrous joints play a major role in locomotory processes.
Reason: Fibrous joints possess synovial fluid. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q55. Assertion: Tetany is a sustained muscle contraction due to a quick series of impulses.
Reason: Tetany is a hormonal deficiency disorder. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q56. Assertion: The foramen magnum is associated with the occipital bone.
Reason: The foramen of Monro allows the spinal cord to pass through it into the vertebrae. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q57. Assertion: The sliding filament theory is best explained by the observation that actin and myosin filaments do not shorten, but rather slide past each other.
Reason: The sliding filament theory was introduced by Andrew Huxley, Rolf Niedergerke, Hugh Huxley, and Jean Hanson. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q58. Assertion: Myasthenia Gravis is an autoimmune disorder.
Reason: Antibodies produced in the body start attacking its own body cells. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q59. Assertion: The articulation between the occipital condyles and the atlas vertebra forms a hinge joint.
Reason: This allows the head to move in one plane. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q60. Assertion: The inflammation of joints can immobilize movement.
Reason: Immobility is caused by the accumulation of uric acid crystals and the ossification of articular cartilage. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q61. Assertion: A sprain is the twisting of a joint without dislocating it.
Reason: A strain is a less severe stretching or twisting of the joint. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q62. Assertion: Maximum movement is possible at the amphiarthroses joint.
Reason: Such joints are also called synovial joints and have almost frictionless movement due to synovial fluid. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q63. Assertion: $$Ca^{2+}$$ plays an important role in muscle contraction.
Reason: $$Ca^{2+}$$ combines with the troponin chain, displacing tropomyosin and allowing the myosin head to combine with actin to form the actomyosin complex. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q64. Assertion: On repeated application of stimuli, involuntary muscles undergo fatigue.
Reason: This is due to the non-availability of ATP molecules. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q65. Assertion: All muscles follow the 'All-or-None' principle.
Reason: All muscles contract either fully or not at all depending on the availability of a threshold stimulus. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q66. Assertion: The latent period is the interval between the application of an appropriate stimulus and the initiation of contraction.
Reason: The latent period is minimum in cardiac muscle fibers. Source: orcusprep.in

NEET Recommended MCQ A & R

hard

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q67. Assertion: In the case of gout, inflammation of a skeletal joint may immobilize the movements of the joint.
Reason: Uric acid crystals in the joint cavity and the ossification of articular cartilage lead to this. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q68. Assertion: The sella turcica is a depression located in the skull that lodges the pituitary gland.
Reason: It is a depression present in the sphenoid bone. Source: orcusprep.in

NEET Recommended MCQ A & R

easy

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

Q69. Assertion: Muscle tetanus is the phenomenon of sustained contraction of a muscle due to a quick succession of nerve impulses/stimuli being received by it.
Reason: Many of our daily activities are due to tetanic contraction of muscles, such as holding a book. Source: orcusprep.in

NEET Recommended MCQ A & R

medium

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

If Assertion is true but the Reason is false.

If both Assertion and Reason are false.

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Biology - Locomotion and Movements-A & R questions

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Biology - Locomotion and Movements-A & R questions

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