Q1.
The process of growth is maximum during
Q2.
Typical growth curve in plants is
Q3.
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in
Q4.
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
Q5.
Which of the following is not an inhibitory substance governing seed dormancy?
Q6.
It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
Q7.
Fruit and leaf drop at early stages can be prevented by the application of
Q8.
You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
Q9.
The Avena curvature is used for bioassay of
Q10.
Auxin can be bioassayed by
Q11.
What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows?
AIPMT 2015 Cancelled
easy
Q12.
Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?
Q13.
Which one of the following growth regulators is known as 'stress hormone'?
Q14.
During seed germination, its stored food is mobilized by
Q15.
The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of
Karnataka NEET 2013
medium
Q16.
Through their effects on plant growth regulators, what do the temperature and light control in the plants?
Q17.
Which one of the following generally acts as an antagonist to gibberellins?
Q18.
Phototropic curvature is the result of uneven distribution of
Q19.
One of the commonly used plant growth hormone in tea plantations is
Q20.
Root development is promoted by
Q21.
One of the synthetic auxin is
Q22.
Which one of the following acids is a derivative of carotenoids?
Q23.
Which one of the following pairs, is not correctly matched?
Q24.
Parthenocarpic tomato fruits can be produced by
Q25.
How does pruning help in making the hedge dense?
Q26.
Cell elongation in internodal regions of the green plants takes place due to
Q27.
Coconut milk factor is
Q28.
Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone
Q29.
Differentiation of shoot is controlled by
Q30.
Dwarfness can be controlled by treating the plant with
Q31.
Which of the following prevents the fall of fruits?
Q32.
Hormone responsible for senescence is
Q33.
Which hormone breaks dormancy of potato tuber?
Q34.
If the apical bud has been removed then we observe
Q35.
Which hormone is responsible for fruit ripening?
Q37.
A plant hormone used for inducing morphogenesis in plant tissue culture is
Q38.
Which combination of gases is suitable for fruit ripening?
Q39.
Which one among the following chemicals is used for causing defoliation of forest trees?
Q40.
Gibberellic acid induces flowering
Q41.
The movement of auxin is largely
Q42.
If the growing plant is decapitated, then
Q43.
Removal of apical bud results in
Q44.
The regulator which retards ageing/senescence of plant parts is
Q45.
The hormone produced during adverse environmental conditions is
Q46.
Klinostat is employed in the study of
Q47.
Which is produced during water stress that brings stomatal closure?
Q48.
Bananas can be prevented from over-ripening by
Q49.
Apical dominance is caused by
Q51.
Which is employed for artificial ripening of banana fruits?
Q52.
Abscisic acid causes
Q53.
The hormone responsible for apical dominance is
Q54.
Hormone primarily connected with cell division is
Q55.
Highest auxin concentration occurs
Q57.
Abscisic acid controls
Q58.
Phototropic and geotropic movements are linked to
Q59.
Which of the following movement is not related to auxin level?
Q60.
Leaf fall can be prevented with the help of
Q61.
Mowing grass lawn facilitates better maintenance because
Q62.
Cut or excised leaves remain green for long if induced to root or dipped in
Q63.
Gibberellins promote
Q64.
What is the site of perception of photoperiod necessary for induction of flowering in plants?
Q66.
Study the four statements (A-D) given below and select the two correct ones out of them.
Q67.
Photoperiodism was first characterised in
Q68.
Importance of day length in flowering of plants was first shown in
Q69.
The wavelength of light absorbed by Pr form of phytochrome is
Q70.
One set of the plant was grown at 12 hours day and 12 hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?
Q71.
Which pigment absorbs the red and far-red light?
Q73.
Proteinaceous pigment which controls the activities concerned with light is
Q74.
The response of different organisms to the environmental rhythms of light and darkness is called
Q75.
Phytochrome becomes active in
Q76.
A pigment which absorbs red and far-red light is
Q77.
What will be the effect on phytochrome in a plant subjected to continuous red light?
Q78.
If a tree flowers thrice in a year (Oct, Jan and July) in Northern India, it is said to be
Q79.
In short day plants, flowering is induced by
Q80.
A chemical believed to be involved in flowering is
Q81.
Which one increases in the absence of light?
Q82.
Phytochrome is involved in