MCQs For NCERT Class 11 Biology Chapter 15 Plant Growth and Development

MCQs Class 11

Please refer to the MCQ Questions for Class 11 Biology Chapter 15 Plant Growth and Development with Answers. The following Plant Growth and Development Class 11 Biology MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Biology with Answers for all chapters in your NCERT Class 11 Biology book.

Plant Growth and Development Class 11 MCQ Questions with Answers

See below Plant Growth and Development Class 11 Biology MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. Identify A and B in the given reaction,

MCQs For NCERT Class 11 Biology Chapter 15 Plant Growth and Development

(a) A- PEP, B-CO2
(b) A-Acetyl CoA, B- CO2
(c) A – CO2, B- H2O
(d) A-Acetyl CoA, B- H2O

Answer

B

Question. The pigment that absorb red and far-red light and helps in flowering is-
(a) Carotene
(b) Xanthophyll
(c) Chlorophyll
(d) Phytochrome

Answer

D

Question. Match the following and choose the correct combination from the options :-

Column-I Column-II
A. Potassiumi. Constituent of ferredoxin
B. Sulphurii. Involved in stomatal movement
C. Molybdenumiii. Auxin synthesis
D. Zinciv. Component of nitrogenase

Options :
(a) A-ii, B-i, C- iv, D- iii
(b) A-i B-ii, C- iii, D- iv
(c) A-iv, B-iii, C- ii, D- i
(d) A-ii, B-iii, C- iv, D- i

Answer

A

Question. Which of the following statements is incorrect?
(a) All enzymes for Kreb’s cycle are present in mitochondrial matrix.
(b) In glycolysis electron acceptor is NAD+
(c) Glycolysis occurs in both aerobic and anaerobic organisms.
(d) Oxidative phosphorylation takes place in oxysomes of inner mitochondrial membrane.

Answer

A

Question. Which of the following statements related to Kreb’s cycle is not correct?
(a) There is only one reaction in Kreb’s cycle where FAD+ is reduced to FADH2
(b) During conversion of succinyl CoA to succinic acid a molecule of GTP is synthesized.
(c) The cycle starts with reaction of acetyl CoA with pyruvic acid to form 6C citric acid.
(d) There is three reactions in the cycle where NAD+ is reduced to NADH+ H+

Answer

C

Question. Which of the following hormones plays an important role in seed maturation?
(a) ABA 
(b) Ethylene
(c) Cytokinin 
(d) Auxin

Answer

A

Question. Select the correct match from the following-

Column-I Column-II
i. Phosphorusa. Nitrogenase
ii. Magnesiumb. Water splitting
iii. Sulphurc. Nucleic acids
iv. Manganesed. Thiamine
e. Ribosome structure

Options :
(a) i-e, ii-a, iii-c, iv-d
(b) i-c, ii-e, iii-d, iv-b
(c) i-b, ii-c, iii-a, iv-e
(d) i-c, ii-a, iii-d, iv-b

Answer

B

Question. Under given suitable conditions, the DPD will be more than OP when-
(a) Op is equal to TP
(b) OP is less than TP
(c) OP is greater than TP
(d) TP is negative

Answer

D

Question. One glucose on complete oxidation yields 38 ATP. During this oxidation of glucose what is the contribution of the Kreb’s cycle via oxidative phosphorylation?
(a) 11 ATP
(b) 12 ATP
(c) 22 ATP
(d) 24 ATP

Answer

C

Question. The products of the photochemical reaction of photosynthesis are-
(a) O2, ATP and NADPH
(b) Glucose and O2
(c) ATP and NADPH only
(d) Organic compounds specially carbohydrates

Answer

A

Question. Which of the following correct about growth?
(a) Growth is regarded as one of most fundamental and conspicuous characteristics of living being.
(b) Growth can be define as an irreversible permanent increase in size of an organ or its part or even of an individual cell.
(c) Generally growth is accompanied by metabolic process that occurs at the expense of energy.
(d) All of the above

Answer

D

Question. Which of the following is not a function of cytokinin?
(a) Delay in senescence
(b) Breaking bud dormancy
(c) Promoting bud dormancy
(d) Counteracting to apical dominance

Answer

C

Question. Recognize the figure and find out the correct labeling-

MCQs For NCERT Class 11 Biology Chapter 15 Plant Growth and Development

(a) a-linear curve in geometric growth, b-sigmoid or S- curve in arithmetic growth.
(b) a-linear curve in arithmetic growth, b-sigmoid or S- curve in geometric growth
(c) a- sigmoid or S- curve in geometric growth, b-linear curve in arithmetic growth
(d) a- sigmoid or S- curve in arithmetic growth, b-linear curve in geometric growth

Answer

B

Question. The following compounds are intermediates in the pathway of photorespiration.
I. Phosphoglycolate II. Serine
III. Glyoxylate IV. Glycine
The correct sequence of their appearance in the pathway-
(a) I, II, III, IV 
(b) I, III, IV, II
(c) II, I, III, IV 
(d) II, I, IV, III

Answer

B

Question. Internodal elongations stimulated by :
(a) Auxin 
(b) ABA
(c) Cytokinin 
(d) Gibberellin

Answer

D

Question. Which of the following is the first phase to occur in a sigmoid growth curve?
(a) Log Phase
(b) Lag Phase
(c) Exponential Phase
(d) Deceleration Phase

Answer

B

Question. Which phenomenon is related to the epithem tissue in the tip of grass blades?
(a) Exudation 
(b) Guttation
(c) Transpiration 
(d) Bleeding

Answer

B

Question. Maturation phase of cell is characterized by-
(a) Modification of protoplasm
(b) Thickening of walls
(c) Both 1 and 2
(d) Increased vacuolation

Answer

C

Question. Which one among the following chemicals is used for causing defoliation of forest trees?   
(a) Malic hydrazide
(b) 2, 4-D
(c) Amo-1618
(d) Phosphon D

Answer

B

Question. Gibberellic acid induces flowering   
(a) in short day plants under long day conditions
(b) in day-neutral plants under dark conditions
(c) in some gymnospermic plants only
(d) in long day plants under short day conditions.

Answer

D

Question. The movement of auxin is largely 
(a) centripetal
(b) basipetal
(c) acropetal
(d) both (a) and (c).

Answer

B

Question. The regulator which retards ageing/senescence of plant parts is   
(a) cytokinin
(b) auxin
(c) gibberellin
(d) abscisic acid.

Answer

A

Question. The hormone produced during adverse environmental conditions is   
(a) benzyl aminopurine
(b) bichlorophenoxy acetic acid
(c) ethylene
(d) abscisic acid.

Answer

D

Question. An enzyme that can stimulate germination of barley seeds is 
(a) invertase
(b) α-amylase
(c) lipase
(d) protease.

Answer

B

Question. Seed dormancy is due to the   
(a) ethylene 
(b) abscisic acid
(c) IAA
(d) starch.

Answer

B

Question. By which action a seed coat becomes permeable to water?   
(a) Scarification
(b) Stratification
(c) Vernalization
(d) All of these

Answer

A

Question. If the growing plant is decapitated, then   
(a) its growth stops
(b) leaves become yellow and fall down
(c) axillary buds are inactivated
(d) axillary buds are activated.

Answer

D

Question. Removal of apical bud results in 
(a) formation of new apical bud
(b) elongation of main stem
(c) death of plant
(d) formation of lateral branching.

Answer

D

Question. Bananas can be prevented from over-ripening by   
(a) maintaining them at room temperature
(b) refrigeration
(c) dipping in ascorbic acid solution
(d) storing in a freezer.

Answer

D

Question. Apical dominance is caused by 
(a) abscisic acid in lateral bud
(b) cytokinin in leaf tip
(c) gibberellin in lateral buds
(d) auxin in shoot tip.

Answer

C

Question. The hormone responsible for apical dominance is 
(a) IAA
(b) GA
(c) ABA
(d) Florigen.

Answer

A

Question. Hormone primarily connected with cell division is   
(a) IAA
(b) NAA
(c) cytokinin/zeatin
(d) gibberellic acid.

Answer

C

Question. Highest auxin concentration occurs 
(a) in growing tips
(b) in leaves
(c) at base of plant organs
(d) in xylem and phloem.

Answer

A

Question. Phytohormones are   
(a) chemical regulating flowering
(b) chemical regulating secondary growth
(c) hormones regulating growth from seed to adulthood
(d) regulators synthesised by plants and influencing physiological processes.

Answer

D

Question. Leaf fall can be prevented with the help of 
(a) abscisic acid
(b) auxins
(c) florigen
(d) cytokinins. 

Answer

D

Question. Mowing grass lawn facilitates better maintenance because   
(a) wounding stimulates regeneration
(b) removal of apical dominance and stimulation of intercalary meristem
(c) removal of apical dominance
(d) removal of apical dominance and promotion of lateral meristem.

Answer

B

Question. Cut or excised leaves remain green for long if induced to root or dipped in 
(a) gibberellins
(b) cytokinins
(c) auxins
(d) ethylene.

Answer

B

Question. Hormone responsible for senescence is 
(a) ABA
(b) auxin
(c) GA
(d) cytokinin.

Answer

A

Question. Which hormone breaks dormancy of potato tuber? 
(a) Gibberellin
(b) IAA
(c) ABA
(d) Zeatin

Answer

A

Question. If the apical bud has been removed then we observe   
(a) more lateral branches 
(b) more axillary buds
(c) plant growth stops
(d) flowering stops.

Answer

A

Question. Gibberellins promote   
(a) seed germination
(b) seed dormancy
(c) leaf fall
(d) root elongation.

Answer

A

Question. What is the site of perception of photoperiod necessary for induction of flowering in plants?   
(a) Leaves
(b) Lateral buds
(c) Pulvinus
(d) Shoot apex

Answer

A

Question. Phytochrome is a 
(a) flavoprotein
(b) glycoprotein
(c) lipoprotein
(d) chromoprotein.

Answer

D

Question. Study the four statements (A-D) given below and select the two correct ones out of them.   
A. Definition of biological species was given by Ernst Mayr.
B. Photoperiod does not affect reproduction in plants.
C. Binomial nomenclature system was given by R.H. Whittaker.
D. In unicellular organisms, reproduction is synonymous with growth.
The two correct statements are
(a) B and C
(b) C and D
(c) A and D
(d) A and B.

Answer

C

Question. Photoperiodism was first characterised in 
(a) tobacco
(b) potato
(c) tomato
(d) cotton.

Answer

A

Question. Which pigment absorbs the red and far-red light?   
(a) Cytochrome
(b) Phytochrome
(c) Carotenoids
(d) Chlorophyll

Answer

B

Question. Which plant is LDP? 
(a) Tobacco
(b) Glycine max
(c) Mirabilis jalapa
(d) Spinach

Answer

D

Question. Proteinaceous pigment which controls the activities concerned with light is   
(a) phytochrome
(b) chlorophyll
(c) anthocyanin
(d) carotenoids.

Answer

A

Question. The response of different organisms to the environmental rhythms of light and darkness is called 
(a) vernalization
(b) photoperiodism
(c) phototaxis
(d) phototropism.

Answer

B

Question. Phytochrome becomes active in 
(a) red light
(b) green light
(c) blue light
(d) none of these.

Answer

A

Question. A pigment which absorbs red and far-red light is   
(a) cytochrome
(b) xanthophyll
(c) phytochrome
(d) carotene.

Answer

C

Question. What will be the effect on phytochrome in a plant subjected to continuous red light?   
(a) Phytochrome synthesis will increase
(b) Level of phytochrome will decrease
(c) Phytochrome will be destroyed
(d) First (b) then (a)

Answer

D

Question. Cytokinins   
(a) promote abscission
(b) influence water movement
(c) help retain chlorophyll
(d) inhibit protoplasmic streaming.

Answer

C

Question. Which is employed for artificial ripening of banana fruits?   
(a) Auxin
(b) Coumarin
(c) Ethylene
(d) Cytokinin

Answer

C

Question. Abscisic acid causes 
(a) stomatal closure
(b) stem elongation
(c) leaf expansion
(d) root elongation.

Answer

A

Question. If a tree flowers thrice in a year (Oct, Jan and July) in Northern India, it is said to be   
(a) photo and thermo-insensitive
(b) photo and thermo-sensitive
(c) photosensitive but thermo-insensitive
(d) thermosensitive but photo-insensitive.

Answer

A

Question. In short day plants, flowering is induced by   
(a) photoperiod less than 12 hours
(b) photoperiod below a critical length and uninterrupted long night
(c) long night
(d) short photoperiod and interrupted long night.

Answer

B

Question. A chemical believed to be involved in flowering is 
(a) gibberellin
(b) kinetin
(c) florigen
(d) IBA.

Answer

C

Question. Which one increases in the absence of light? 
(a) Uptake of minerals
(b) Uptake of water
(c) Elongation of internodes
(d) Ascent of sap

Answer

C

Question. Phytochrome is involved in 
(a) phototropism
(b) photorespiration
(c) photoperiodism
(d) geotropism.

Answer

C

Question. Vernalisation stimulates flowering in   
(a) zamikand
(b) turmeric
(c) carrot
(d) ginger.

Answer

C

Question. Importance of day length in flowering of plants was first shown in 
(a) cotton
(b) Petunia
(c) Lemna
(d) tobacco.

Answer

D

Question. The wavelength of light absorbed by Pr form of phytochrome is 
(a) 680 nm
(b) 720 nm
(c) 620 nm
(d) 640 nm.

Answer

A

Question. 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?   
(a) Long day
(b) Darkness neutral
(c) Day neutral
(d) Short day

Answer

D

Question. Treatment of seeds at low temperature under moist conditions to break its dormancy is called   
(a) stratification
(b) scarification
(c) vernalization
(d) chelation.

Answer

C

Question. Flowering dependent on cold treatment is 
(a) cryotherapy
(b) cryogenics
(c) cryoscopy
(d) vernalisation.

Answer

C

Question. Auxin herbicide is — 
(a) NAA
(b) IAA
(c) 2, 4-D
(d) IBA

Answer

C

Question. Gibberellin was first extracted from — 
(a) Gibberella fujikuroi
(b) algae
(c) bacteria
(d) roots of higher plants

Answer

A

Question. Dwarfness can be controlled by treating the plant with — 
(a) cytokinin
(b) gibberellic acid
(c) auxin
(d) antigibberellin

Answer

B

Question. Which of the following hormones can replace vernalisation?   
(a) Auxin
(b) Cytokinin
(c) Gibberellins
(d) Ethylene 

Answer

C

Plant Growth and Development Class 11 Biology MCQ Questions