Q2.
In an experiment where a part of leaf is enclosed in test tube containing KOH Soaked Cotton & exposed to light will-
Q3.
Match the experiment objective with the scientist who performed it-
| Scientist | Objective |
|---|
| i Priestly | I Production glucose in photosynthesis |
| ii Julius von sachs | II Role of sunlight in photosynthesis |
| iii Jan ingenhousez | III Role of air in photosynthesis |
(i) (ii) (iii)
Q4.
Who performed a series of experiments that revealed the essential role of air on the growth of green plants and when?
Q5.
Who discovered oxygen and when?
Q6.
Who showed that sunlight is essential to the plant?
Q7.
part of the plants that could release oxygen.
Q8.
Match the following
| Column A | Column B |
|---|
| (A) First action spectrum | (1) Cornelius van nel |
| (B) Chlorophyll | (2) T.W Engelmann |
| (C) O2 evolve from H2O | (3) Algae |
| (D) Cladophora | (4) Julius von sachs |
| (5) Bacteria |
Q9.
________ were used to detect the sites of O2 evolution.
Q10.
Cornelius van Neil studied on ____ to demonstrate that photosynthesis is essentially a light dependent reaction.
Q11.
________ from a suitable oxidisable compound reduces CO2 to Carbohydrates.
Q13.
(A) – O2 evolved by the green plant comes from H2O, not from carbon dioxide.
(B) – This was proved by using Radio isotopic techniques.
Select the correct option-
Q14.
Where does photosynthesis take place?
Q15.
Assertion – Chloroplasts usually align themselves along the walls of mesophyll cells.
Reason – They get optimum quantity of incident light by aligning along well.
Choose the correct option.
Q17.
Choose the incorrect statement from the following?
Q19.
Identify correct labelling.
(i) (ii) (iii) (iv)
Q20.
Sugar is synthesized-
Q21.
Which of the following is correct?
Q22.
If a plant is kept in dark for a long time-
Q23.
Choose the incorrect option- During daytime-
Q24.
The colour of leaf is due to-
Q25.
Leaf pigments are separated by-
Q26.
Match the pigment with its colour –
| I | II |
|---|
| (i) Chlorophyll a | (A) Blue green |
| (ii) Chlorophyll b | (B) Yellow |
| (iii) Carotenoids | (C) Yellow-green |
| (iv) Xanthophyll | (D) Yellow-orange |
(i) (ii) (iii) (iv)
Q27.
Which is the most abundant plant pigment in the world?
Q28.
Identity correct
i ii iii
Q29.
Maximum absorption by chlorophyll a occors in-
Q30.
Assertion – Chlorophyll ‘a’ is the chief pigment associated with photosynthesis
Reason – Chlorophyll maximum absorption coincides with maximum photosynthesis.
Choose correct option –
Q31.
Accessory pigments include
Q33.
Advantages of accessory pigments include –
Q34.
Light Reaction is also Known as-
Q35.
Choose correct order of events in light reaction-
i) ATP & NADPH formation
ii) Water Splitting
iii) Oxygen release
iv) Light absorption
Q37.
The naming of PS I & PS II was based on-
Q38.
Which of the following is correct?
Q39.
Reaction Centre is formed by-
Q40.
Choose the incorrect statements-
Q41.
When the light energy is absorbed by PS-II, it is-
Q42.
The movement of excited electrons in Noncyclic Photophosphorylation:
Q43.
The electrons excited form PS II-
Q44.
The electrons passed on by PS I to electron acceptor are-
Q45.
Electrons from PS-I move downhill to a molecule of energy-rich-
Q46.
The Z scheme is named so because-
Q47.
Identify the correct site for I- water splitting, II-NADP+ reduction, III-ATP synthesis
I II III
Q48.
Splitting of water is important-
Q49.
Water splitting is associated with-
Q50.
The O2 is released in-
Q51.
Protons are released-
Q52.
The process of ATP synthesis in cells is/are-
Q53.
The order of working of the two photosystems is-
Q54.
Non-cyclic photo-phosphorylation involves-
Q55.
End product of Z-scheme is-
Q56.
Cyclic photophosphorylation involves-
Q57.
Identify correct labels-
(i) (ii) (iii)
Q58.
Identify correct -
I II
Q59.
Statement A – The accumulation of protons in stroma cause decrease in pH of stroma.
Statement B – The accumulation of proton in lumen cause formation of potential gradient across thylakoid membrane.
Select the correct option-
Q60.
ATP formation occurs upon-
Q61.
The transmembrane channel in ATP synthase enzyme is formed by-
Q62.
The transmembrane channel allows – across membrane for ATP synthesis
Q63.
The ATP synthese has two parts I & II
I II
Q66.
Conformational change in ____ makes ATP.
Q67.
For creating proton gradient across thylakoid membrane ________ .
Q68.
The end products of light reaction are-
Q69.
The products of light reaction are-
Q71.
Statement A – Biosynthetic reaction is independent of direct presence of light
Statement B – Biosynthetic process continues for some time after the light becomes unavailable and then stops.
Select the correct option-
Q72.
Calvin discovered that first CO2 fixation product is-
Q73.
To discover the first CO2 fixation product, Calvin worked on-using-
Q74.
The first product of CO2 fixation was identified to be in the Calvin cycle.
Q75.
In C4 pathway, first CO2 fixation product is same options as
Q76.
OAA and PGA stands for-
Q77.
For a 3 carbon compound to be formed after CO2 fixation, the acceptor molecule is of-
Q79.
The Calvin cycle starts with ______ ends with
Q81.
The three steps in Calvin cycle are-
i ii iii
Q82.
The most crucial step of Calvin cycle is-
Q83.
Carboxylation is catalyzed by the enzyme-
Q84.
RUBisCo has the activity of-
Q85.
Reduction involves Use of __________ molecules of ATP for fixed CO2 reduction
Q86.
Reduction involves use of – molecules of NADPH to reduce fixed CO2.
Q87.
For formation of 1 glucose molecule, how may turns of Calvin cycle is needed?
Q88.
Regeneration of __(i)__ takes place at expense of __(ii)__ ATP & __(iii)__ NADPH.
(i) (ii) (iii)
Q89.
Statement A – In CO2 fixation cycle, the molecules of ATP used is more than NADPH used.
Statement B – to meet the difference in number of ATP & NADPH used in dark reaction, cyclic phosphorylation take place.
Choose the correct option-
Q90.
For formation of 1 glucose, how many molecules of ATP are required by C3 cycle?
Q91.
For one glucose formation, how many NAD molecules are needed by C3 pathway?
Q92.
C4 plants are adaptation of plants to-
Q93.
(i) – C4 plants lack Calvin cycle
(ii) – C4 plants lack photorespiration
(iii) – C4 plants have more productivity than C3 plants
(iv) – C4 plants cannot tolerate higher temperature
How many of the above statements are incorrect?
Q94.
First CO2 fixation product in C4 cycle is-
Q95.
Bundle sheath cells are present in ____ around ____.
Q96.
Leaves with bundle sheath cells are said to show-
Q97.
Bundle sheath cells-
Q98.
Example of C4 plants is-
Q99.
Primary CO2 acceptor in C4 plants is-
Q100.
Enzyme responsible for primary CO2 fixation in C4 plants is-
Q101.
Which of the following is true?
Q102.
Primary CO2 fixation occurs in C4 plants in
Q103.
CO2 fixation in C4 plants occurs in-
Q104.
OAA forms other four carbon acids which are transported. They are-
Q105.
The figure shows
Q106.
In C4 pathway, RUBisCO is-
Q108.
Calvin cycle takes place in __(i)__ in all C3 plants in __(ii)__ in all C4 plants
(i) (ii)
Q109.
Identify correct labels-
(i) (ii) (iii)
Q110.
Identify the A and B
(i) (ii)
Q111.
Read the following statements-
Statement A – Ribulose Bisphosphate is the most abundant enzyme in the world.
Statement B – Photorespiration doesn't occur in C4 plants.
Choose the correct option-
Q112.
RUBisCO has ________ when CO2 & O2 is equal.
Q114.
When O2 binds to RUBisCO, RUBP is converted to ________ and ________.
Q115.
In photorespiration-
Q116.
Assertion – Photorespiration doesn't occur in C4 plants.
Reason – CO2 concentration at enzyme site is high in C4 plants.
Chose correct option-
Q117.
Photosynthesis is dependent on-
Q118.
How many of the following are factors affecting photosynthesis?
age of leaves, orientation of leaf, internal CO2 concentration, amount of chlorophyll, number of leaves
Q119.
Blackman's which law comes into effect when several factors affect any biochemical process?
Q120.
According to Blackmann's Law, the rate of chemical process is determined by the factor which
Q121.
The relationship between incident light and CO2 fixation rate at higher light intensity is-
Q122.
At lower Light intensity, the rate of CO2 fixation-
Q123.
Light saturation occurs at ________ of full sunlight.
Q124.
Very big increase in light intensity causes-
Q125.
Which of the following is true?
Q126.
The concentration of CO2 beyond which the CO2 becomes damaging over longer periods is-
Q127.
The CO2 fixation rates increases upto the CO2 concentration of-
Q128.
At low light conditions, which of the groups respond positively to increase in CO2-
Q129.
At high light conditions, which of the groups respond positively to increase in CO2.
Q130.
C4 plants show saturation at CO2 concentration of-
Q131.
C3 plants show saturation for CO2 concentration at-
Q132.
Assertion – Greenhouse crops like tomatoes and bell pepper are grown in CO2 enriched atmosphere for higher yields.
Reason – C4 plants respond to higher CO2 concentration by showing increased rate of photosynthesis.
Choose the correct option.
Q133.
Which of the reaction is more sensitive to temperature?
Q134.
Which group of plants has a higher temperature optimum?
Q135.
Which of the following is true?
Q136.
Water stress causes
Q137.
In the given graph, in which region will plant not respond to increase in CO2 concentration?
A B C