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
Hope these MCQs help you in your preparation for NEET/AIIMS. You can download a PDF of Class 11 Biology Chapter 15 Plant Growth And Development this MCQ by Clicking on ctrl + p. If you have any other queries of CBSE Class 11 Biology Plant Growth And Development MCQs Multiple Choice Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible.