Class 11 Biology MCQs Plant Growth And Development for NEET

Here, you will get Class 11 Biology MCQ of Chapter 15 Plant Growth And Development for cracking NEET/AIIMS. By solving these MCQs of Class 11 Biology Chapter 15 Plant Growth And Development, you will get the confidence to crack NEET. Practice MCQ Questions for Class 11 Biology with Answers on a daily basis and score well in exams. 

Plant Growth And Development Class 11 MCQs Questions with Answers

Intercalary meristems are of
(a) Permanent nature
(b) Temporary nature
(c) Some are permanent some temporary
(d) None of these

Answer: (b) Temporary nature

Typical plant growth shows _________ curve.
(a) J-shaped
(b) S-shaped
(c) I-shaped
(d) Parabolic

Answer: (b) S-shaped

Exponential growth of the plants is express as W1 = W0 ert r represents
(a) ability of the plant to produce new cells
(b) efficiency index
(c) relative growth rate
(d) all of the above

Answer: (d) all of the above

Which one is incorrect?
(a) Epiblast is presumptive ectoderm and mesoderm
(b) Hypoblast is presumptive endoderm
(c) Hypoblast is presumptive mesoderm
(d) Upper layer of cells in blastoderm is epiblast

Answer: (c) Hypoblast is presumptive mesoderm

Liver and pancreas arise from
(a) Foregut
(b) Midgut
(c) Hindgut
(d) None of these

Answer: (a) Foregut

Which of the growth substance acts as a stimulant during nodule formation in leguminous plant?
(a) Ethylene
(b) ABA
(c) IAA
(d) Morphactin

Answer: (c) IAA

One set of a 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?
(a) Long day
(b) Darkness neutral
(c) Day neutral
(d) Short day

Answer: (d) Short day

Which weedicide can defoliate the complete forest?
(a) 2, 4–D
(b) MH
(c) AMO – 1618
(d) ABA

Answer: (c) AMO – 1618

Cells of fibers and tracheids elongate during
(a) Phase of cell division
(b) Phase of cell elongation
(c) Phase of cell maturation
(d) Phase of cell differentiation

Answer: (a) Phase of cell division

Opening of floral buds into flowers, is a type of
(a) Autonomic movement of variation
(b) Autonomic movement of locomotion
(c) Autonomic movement of growth
(d) Paratonic movement of growth

Answer: (c) Autonomic movement of growth

To prevent over – ripening, bananas should be
(a) given a dip in ascorbic acid
(b) maintained at room temperature
(c) refrigerated
(d) stored at the top of refrigerator

Answer: (c) refrigerated

Mechanism of development was explained by
(a) Hans Dietrisch
(b) Spemann
(c) Both a and b
(d) Haemmerling

Answer: (c) Both a and b

Which plant growth regulator is the derivative of carotenoids?
(a) Auxin
(b) Gibberelic acid
(c) Cytokinin
(d) Abscisic acid

Answer: (d) Abscisic acid

Which of the following prevents the fall of fruits?
(a) GA3
(b) NAA
(c) Ethylene
(d) Zeatin

Answer: (b) NAA

If the tip of a seedling is cut off growth as well as bending ceases because it hampers
(a) Respiration
(b) Photosynthesis
(c) Perception of light stimulus
(d) Transpiration

Answer: (c) Perception of light stimulus

All changes that an organism goes through during its life cycle is called as
(a) Development
(b) Elongation
(c) Differentiation
(d) Maturation

Answer: (c) Differentiation

Parthenocarpy can be induced to develop seedless fruit by application of
(a) Ethylene and gibberellins
(b) Zeatin and IAA
(c) IBA and cytokinin
(d) IAA and IBA

Answer: (d) IAA and IBA

Coconut water contains
(a) ABA
(b) Auxin
(c) Cytokinin
(d) Gibberellin

Answer: (c) Cytokinin

Growth in dorsiventral leaf is measured in terms of
(a) length of leaf
(b) increase in cell number
(c) surface area increase
(d) none of these

Answer: (c) surface area increase

Cavity formed between somatic and splanchnic mesoderm is called
(a) Gastrocoele
(b) Blastocoele
(c) Coelom
(d) Neurocoele

Answer: (c) Coelom

Mobilisation of stored food in germinating seeds is triggered by
(a) auxins
(b) cytokinins
(c) gibberellins
(d) ethylene

Answer: (c) gibberellins

Abscisic acid (ABA) was first isolated from cotton balls by
(a) Addicot et al
(b) Letham et al
(c) Brian et al
(d) Kurosava

Answer: (a) Addicot et al

Seedless fruits can be obtained by treating the unpollinated ovaries with
(a) Colchicine
(b) Sucrose solution
(c) Hormones
(d) Pure lanolin

Answer: (c) Hormones

The conditions necessary for vernalization are
(a) water and carbon dioxide
(b) oxygen and water.
(c) low temperature and oxygen
(d) high temperature and water

Answer: (a) water and carbon dioxide

To avoid excessive water loss during severe drought stress, the closure of stomata is signalled by the production of
(a) ABA
(b) IAA
(c) NAA
(d) IBA

Answer: (a) ABA

Which one of the following is a long day plant?
(a) Wheat
(b) Soyabean
(c) Bajra
(d) Tobacco

Answer: (a) Wheat

Induction of rooting in stem cutting by auxin treatment would be beneficial in which of the following?
(a) Marchantia
(b) Wheat
(c) Cuscuta
(d) Bougainvillea

Answer: (d) Bougainvillea

Photoperiodism stimulus is perceived by
(a) Meristem
(b) Flower
(c) Leaves
(d) Buds

Answer: (c) Leaves

Which one of the following nutrients is concerned with the growth of the plants in view of their role in synthesis of auxin:
(a) S
(b) Mn
(c) Zn
(d) K

Answer: (c) Zn

Apical dominance means
(a) Suppression of growth of apical bud by axillary buds
(b) Suppression of growth of axillary buds by the presence of apical bud
(c) Stimulation of growth of axillary buds by removal of apical bud
(d) Inhibition of growth of axillary buds by removal of apical bud

Answer: (b) Suppression of growth of axillary buds by the presence of apical bud

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