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Plant Growth and Development · Biology · NEET

MCQ (Single Correct Answer)
68
MCQ (More than One Correct Answer)
1
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MCQ (Single Correct Answer)

1

Match List-I with List-II :

List - I List - II
(A) Abscisic acid (I) Promotes female flowers in cucumber
(B) Ethylene (II) Helps seeds to withstand desiccation
(C) Gibberellin (III) Helps in nutrient mobilisation
(D) Cytokinin (IV) Promotes bolting in beet, cabbage etc.

Choose the correct answer from the options given below:

NEET 2024 (Re-Examination)
2

F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was supplied with one of the following except :

NEET 2024 (Re-Examination)
3

Given below are some statements about plant growth regulators.

A. All GAs are acidic in nature.

B. Auxins are antagonists to GAs.

C. Zeatin was isolated from coconut milk.

D. Ethylene induces flowering in Mango.

E. Abscisic acid induces parthenocarpy.

Choose the correct set of statements from the options given below :

NEET 2024 (Re-Examination)
4

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

NEET 2024
5

Formation of interfascicular cambium from fully developed parenchyma cells is an example for

NEET 2024
6

Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?

NEET 2024
7

The phenomenon which is influenced by auxin and also played a major role in its discovery :

NEET 2023 Manipur
8

Match List - I with List - II.

List - I List - II
(A) Auxin (I) Promotes female flower formation in cucumber
(B) Gibberellin (II) Overcoming apical dominance
(C) Cytokinin (III) Increase in the length of grape stalks
(D) Ethylene (IV) Promotes flowering in pineapple

Choose the correct answer from the options given below :

NEET 2023 Manipur
9

Which of the following statements is not correct ?

NEET 2023 Manipur
10

Spraying of which of the following phytohormone on juvenile conifers helps hastening the maturity period, that leads early seed production?

NEET 2023
11

Which hormone promotes internode/petiole elongation in deep water rice?

NEET 2023
12

The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called

NEET 2022 Phase 2
13

Which of the following growth regulators is an adenine derivative?

NEET 2022 Phase 2
14

Which one of the following plants does not show plasticity?

NEET 2022 Phase 1
15

The gaseous plant growth regulator is used in plants to:

NEET 2022 Phase 1
16

Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants:

NEET 2022 Phase 1
17
Plants follow different pathways in response to environment of phases of life to form different kinds of structures. This ability is called
NEET 2021
18
The site of perception of light in plants during photoperiodism is
NEET 2021
19
The plant hormone used to destroy weeds in a field
NEET 2021
20
Which of the following is not an inhibitory substance governing seed dormancy?
NEET 2020 Phase 1
21
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop
NEET 2020 Phase 1
22
What is the site of perception of photoperiod necessary for induction of flowering in plants?
NEET 2019
23
Fruit and leaf drop at early stages can be prevented by the application of
NEET 2017
24
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?
NEET 2016 Phase 2
25
Phytochrome is a
NEET 2016 Phase 2
26
The Avena curvature is used for bioassay of
NEET 2016 Phase 1
27
Auxin can be bioassayed by
AIPMT 2015
28
Typical growth curve in plants is
AIPMT 2015 Cancelled Paper
29
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 Paper
30
A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white -coloured like albinos. Which of the following terms will you use to describe them?
AIPMT 2014
31
Which one of the following growth regulators is known as 'stress hormone'?
AIPMT 2014
32
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?
AIPMT 2014
33
The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of
NEET 2013 (Karnataka)
34
During seed germination its stored food is mobilized by
NEET 2013
35
Vernalization simulates flowering in
AIPMT 2012 Mains
36
Through their effects on plant growth regulators, what do the temperature and light control in the plants?
AIPMT 2012 Mains
37
Which one of the following generally acts as an antagonist to gibberellins?
AIPMT 2012 Mains
38
Root development is promoted by
AIPMT 2010 Mains
39
One of the commonly used plant growth hormone in tea plantations is
AIPMT 2010 Mains
40
Coiling of garden pea tendrils around any support is an example of
AIPMT 2010 Prelims
41
Photoperiodism was first characterised in
AIPMT 2010 Prelims
42
Phototropic curvature is the result of uneven distribution of
AIPMT 2010 Prelims
43
Which one of the following acids is a derivative of carotenoids?
AIPMT 2009
44
Senescence as an active developmental cellular process in growth and functioning of a flowering plant, is indicated in
AIPMT 2008
45
Importance of day length in flowering of plants was first shown in
AIPMT 2008
46
The wavelength of light absorbed by Pr form of phytochrome is
AIPMT 2007
47
Opening of floral buds into flowers, is a type of
AIPMT 2007
48
Which one of the following pairs, is not correctly matched?
AIPMT 2007
49
Treatment of seeds at low temperature under moist conditions to break its dormancy is called
AIPMT 2006
50
How does pruning help in making the hedge dense?
AIPMT 2006
51
An enzyme that can stimulate germination of barley seeds is
AIPMT 2006
52
Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
AIPMT 2006
53
The ability of the Venus Flytrap to capture insects is due to
AIPMT 2005
54
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?
AIPMT 2004
55
Cell elongation in internodal regions of the green plants takes place due to
AIPMT 2004
56
Coconut milk factor is
AIPMT 2003
57
Nicotiana sylvestris flowers only during long days and N.tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. What is the best reason for considering N.sylvestris and N.tabacum to be separate species?
AIPMT 2003
58
Differentiation of shoot is controlled by
AIPMT 2003
59
Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone
AIPMT 2003
60
Dwarfness can be controlled by treating the plant with
AIPMT 2002
61
Seed dormancy is due to the
AIPMT 2002
62
Which hormone breaks dormancy of potato tuber?
AIPMT 2001
63
Hormone responsible for senescence is
AIPMT 2001
64
Which of the following prevents the fall of fruits?
AIPMT 2001
65
Which plant is LDP?
AIPMT 2001
66
If the apical bud has been removed then we observe
AIPMT 2000
67
Which hormone is responsible for fruit ripening?
AIPMT 2000
68
By which action a seed coat becomes permeable to water
AIPMT 2000

MCQ (More than One Correct Answer)

1
One of the synthetic auxin is
AIPMT 2009
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