Recommended PYQs (STRICTLY NCERT Based) Plant Growth and Development Botany NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin
1. promotes abscission of mature leaves only.
2. does not affect mature monocotyledonous plants.
3. can help in cell division in grasses, to produce growth.
4. promotes apical dominance

Subtopic: Growth Hormones & Auxin | Auxin Function |

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Formation of interfascicular cambium from fully developed parenchyma cells is an example of
1. Redifferentiation
2. Dedifferentiation
3. Maturation
4. Differentiation

Subtopic: Differentiation, Dedifferentiation and Redifferentiation |

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

1.	Gibberellin	2.	Cytokinin
3.	Abscisic acid	4.	Auxin

Subtopic: Gibberellin |

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Match List-I with List-II

	List-I		List-II
A.	Ethylene	I.	Increase length of stem
B.	Cytokinins	II.	Promotion of senescence and abscission
C.	ABA	III.	Delaying leaf senescence
D.	Gibberellins	IV.	Inhibition of seed germination

Choose the correct answer from the options given below:
1. A-III, B-I, C-IV, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-II, C-I, D-III
4. A-III, B-IV, C-I, D-II

Subtopic: Gibberellin | Cytokinin | Ethylene | Abscisic Acid |

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F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was supplied with one of the following, except:
1. Extract of vascular tissues
2. Coconut milk
3. Abscisic acid
4. Yeast extract

Subtopic: Growth Hormones & Auxin |

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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 ones given below:

1.	A,C,D	2.	B,E
3.	A,B,C	4.	B,D,E

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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:
1. A-II, B-III, C- IV, D- I
2. A-III, B-II, C- I, D- IV
3. A-II, B-I, C- IV, D- III
4. A-II, B-I, C- III, D- IV

Subtopic: Gibberellin | Cytokinin | Ethylene | Abscisic Acid |

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

1.	2, 4-D	2.	GA₃
3.	Kinetin	4.	Ethylene

Subtopic: Ethylene |

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In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as

1.	Senescence	2.	Differentiation
3.	Dedifferentiation	4.	Development

Subtopic: Differentiation, Dedifferentiation and Redifferentiation |

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

1.	Abscisic Acid	2.	Indole-3-butyric Acid
3.	Gibberellic Acid	4.	Zeatin

Subtopic: Gibberellin |

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Select Chapter Topics:

Growth

Growth Model

Growth Terminology

Development

Growth Hormones & Auxin

Auxin Function

Gibberellin

Cytokinin

Ethylene

Abscisic Acid

Photoperiodism (OLD NCERT)

Vernalization (OLD NCERT)

Differentiation, Dedifferentiation and Redifferentiation

Seed Dormancy (OLD NCERT)

Select Chapter Topics:

Growth

Growth Model

Growth Terminology

Development

Growth Hormones & Auxin

Auxin Function

Gibberellin

Cytokinin

Ethylene

Abscisic Acid

Photoperiodism (OLD NCERT)

Vernalization (OLD NCERT)

Differentiation, Dedifferentiation and Redifferentiation

Seed Dormancy (OLD NCERT)

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Select Chapter Topics:

Growth

Growth Model

Growth Terminology

Development

Growth Hormones & Auxin

Auxin Function

Gibberellin

Cytokinin

Ethylene

Abscisic Acid

Photoperiodism (OLD NCERT)

Vernalization (OLD NCERT)

Differentiation, Dedifferentiation and Redifferentiation

Seed Dormancy (OLD NCERT)

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Select Chapter Topics:

Growth

Growth Model

Growth Terminology

Development

Growth Hormones & Auxin

Auxin Function

Gibberellin

Cytokinin

Ethylene

Abscisic Acid

Photoperiodism (OLD NCERT)

Vernalization (OLD NCERT)

Differentiation, Dedifferentiation and Redifferentiation

Seed Dormancy (OLD NCERT)

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions