Plant Growth and Development MCQ Questions for Class 11 Biology Chapter 15 with Answers

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NCERT Chapters for Class 11 Biology


Q1. The cold induced stimulus used in vernalization is

(i) Vernalin
(ii) Carotene
(iii) Ethylene
(iv) Florigen


(i) Vemalin


Q2. Auxin is synthesised in the apical meristems from amino acid

(i) Isoleucine
(ii) Methionine
(iii) Niacin
(iv) Tryptophan


(iv) Tryptophan


Q3. Apical dominance in higher plants is due to

(i) Phyto hormones
(ii) Enzymes
(iii) Carbohydrates
(iv) Photoperiodism


(i) Phyto hormones


Q4. Opening of floral buds into flowers, is a type of:

(i) Autonomic movement of variation
(ii) Autonomic movement of locomotion
(iii) Autonomic movement of growth
(iv) Paratonic movement of growth


(iii) Autonomic movement of growth


Q5. Growth in dorsiventral leaf is measured in terms of

(i) length of leaf
(ii) increase in cell number
(iii) surface area increase
(iv) none of these


(iii) surface area increase


Q6. Induction of rooting in stem cutting by auxin treatment would be beneficial in which of the following?

(i) Marchantia
(ii) Wheat
(iii) Cuscuta
(iv) Bougainvillea


(iv) Bougainvillea


Q7. Abscisic acid (ABA) was first isolated from cotton balls by

(i) Addicot et al
(ii) Letham et al
(iii) Brian et al
(iv) Kurosava


(i) Addicot et al


Q8. Which one of the following is a long day plant?

(i) Wheat
(ii) Soyabean
(iii) Bajra
(iv) Tobacco


(i) Wheat


Q9. Which of the following hormones can replace vernalization?

(i) Auxin
(ii) Cytokinin
(iii) Gibberellins
(iv) Ethylene


(iii) Gibberellins


Q10. Auxins hormone was first discoverd by

(i) Kogletal
(ii) Went
(iii) Darwin
(iv) Boysen Jenson


(ii) Went


Q11. Seedless fruits can be obtained by treating the unpollinated ovaries with

(i) Colchicine
(ii) Sucrose solution
(iii) Hormones
(iv) Pure lanolin


(iii) Hormones


Q12. Typical plant growth shows _ curve.

(i) J-shaped
(ii) S-shaped
(iii) I-shaped
(iv) Parabolic


(ii) S-shaped


Q13. Which one of the followings is a gaseous plant hormone?

(i) Ethylene
(ii) Gibberellin
(iii) IAA
(iv) Abscisic acid


(i) Ethylene


Q14. Avena coleoptile test to find out the quantity of growth promoting hormones was discovered by

(i) F.W. Went
(ii) L.J. Oudus
(iii) K.V. Thimann
(iv) F. Skoog


(i) F.W. Went


Q15. The first natural cytokinins obtained from unripe maize grains is known as

(i) Indole 3-acetic acid
(ii) ABA
(iii) Zeatin
(iv) Kinetin


(iii) Zeatin


Q16. The hormone which controls cell division and cell differentiation is

(i) cytokinin
(ii) auxin
(iii) ABA
(iv) gibberellin


(i) cytokinin


Q17. In a plant growing under dark condition, the leaves turn light coloured, internodes become much elongated and it is termed as

(i) etiolation
(ii) chlorosis
(iii) vernalization
(iv) phyllotaxy


(i) etiolation


Q18. Indole 3 acetic acid (IAA) is a naturally occuring plant hormone called

(i) Gibberellins
(ii) Auxins
(iii) Cytokinins
(iv) Abscisic acid


(ii) Auxins


Q19. Parthenocarpy can be induced to develop seedless fruit by application of

(i) Ethylene and gibberellins
(ii) Zeatin and IAA
(iii) IBA and cytokinin
(iv) IAA and IBA


(iv) IAA and IBA


Q20. Cells of fibers and tracheids elongate during

(i) Phase of cell division
(ii) Phase of cell elongation
(iii) Phase of cell maturation
(iv) Phase of cell differentiation


(i) Phase of cell division


I Think the given NCERT MCQ Questions for class 11 Biology book Chapter 15 Plant Growth and Development with Answers Pdf free download will assist you. If you’ve got any queries regarding CBSE Class 11 Biology Plant Growth and Development MCQs Multiple Choice Questions with Answers, drop a comment below and that we will come back to you soon.


Chapter : 1 The Living World Class 11 MCQ Questions
Chapter : 2 Biological Classification Class 11 MCQ Questions
Chapter : 3 Plant Kingdom Class 11 MCQ Questions
Chapter : 4 Animal Kingdom Class 11 MCQ Questions
Chapter : 5 Morphology of Flowering Plants Class 11 MCQ Questions
Chapter : 6 Anatomy of Flowering Plants Class 11 MCQ Questions
Chapter : 7 Structural Organisation in Animals Class 11 MCQ Questions
Chapter : 8 Cell: The Unit of Life Class 11 MCQ Questions
Chapter : 9 Biomolecules Class 11 MCQ Questions
Chapter : 10 Cell Cycle and Cell Division Class 11 MCQ Questions
Chapter : 11 Transport in Plants Class 11 MCQ Questions
Chapter : 12 Mineral Nutrition Class 11 MCQ Questions
Chapter : 13 Photosynthesis in Higher Plants Class 11 MCQ Questions
Chapter : 14 Respiration in Plants Class 11 MCQ Questions
Chapter : 15 Plant Growth and Development Class 11 MCQ Questions
Chapter : 16 Digestion and Absorption Class 11 MCQ Questions
Chapter : 17 Breathing and Exchange of Gases Class 11 MCQ Questions
Chapter : 18 Body Fluids and Circulation Class 11 MCQ Questions
Chapter : 19 Excretory Products and their Elimination Class 11 MCQ Questions
Chapter : 20 Locomotion and Movement Class 11 MCQ Questions
Chapter : 21 Neural Control and Coordination Class 11 MCQ Questions
Chapter : 22 Chemical Coordination and Integration Class 11 MCQ Questions

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