MCQ Plant Growth and Development Chapter 15 Biology Class 11
NCERT Biology Class 11th Ch.15 Plant Growth and Development MCQ Practice Questions for NEET | Class 11
Prepare these important MCQ Questions of Biology Class 11 Plant Growth and Development Chapter 15, Latest questions to expected to come in NEET | School Exams.
1. First step in process of plant growth is:
1. Zygote formation
2. Seed germination
3. Periclinal division
4. Anticlinal division
2. Choose the incorrect statement.
1. Development is sum of two processes growth and differentiation.
2. Both growth and differentiation are open in higher plants.
3. Increase in length denotes the growth in dorsiventral leaf.
4. Cork cambium appear later in life in gymnosperms.
3. Choose the incorrect match.
1. F.W. Went – Auxin
2. Kurosawa – Cytokinin
3. H.H. Cousins- Ethylene
4. F. Skoog- Cytokinin
4. Germination in which of the following plants is epigeal?
1. Maize
2. Mango
3. Radish
4. Bean
5. Which is most conspicuous event in any living organism?
1. Reproduction
2. Maturation
3. Growth
4. Differentiation
6. Maize apical meristem gives rise to:
1. 3,50,000 cells per hour
2. 17,500 cells per hour
3. 3,500 cells per day
4. 17,500 cells per day
7. Cells in meristematic phase of growth have which of following characteristics?
A. Rich in protoplasm.
B. Large nucleus.
C. Abundant cytoplasmic connections.
D. Thin cell wall.
1. Only A and C
2. A, C, D only
3. A,B,C,D
4. Only A and B
8. Choose the incorrect option:
1. Embryo development shows both arithmetic and geometric phases of growth.
2. Increased vacuolation is seen during phase of elongation.
3. In most systems, initial growth if fast and it decreases rapidly thereafter.
4. Relative growth rate refers to efficiency index.
9. During which process cells undergo few to major structural changes in their cell walls?
1. Growth
2. Maturation
3. Differentiation
4. Dedifferentiation
10. Choose the incorrect option with respect to development of tracheary element.
1. Loss of protoplasm
2. Inelastic cell wall
3. Lignin deposition
4. Cell wall becomes very strong
11. Odd one out with respect to dedifferentiation
1. Interfascicular cambium
2. Intrafascicular cambium
3. Cork cambium
4. Root vascular cambium
12. Extrinsic factor among the following which controls development.
1. Intercellular factor
2. Intracellular factor
3. Nutrition
4. Both 1 and 3
13. Choose the incorrect match:
1. Auxin – Indole acetic acid
2. Zeatin – N⁶ fufurylamino purine
3. Abscissic acid – Carotenoids
4. Gibberellic acid – Terpene
14. Which PGR plays important role in response to wounds?
1. ABA
2. GAs
3. IAA
4. Cytokinin
15. Choose the correct statement.
1. Kinetin is obtained for coconut milk.
2. Auxin was first isolated from oat seedlings.
3. Ethylene is largely an inhibitor of growth activities.
4. Dormin was chemically different from ABA.
16. Growth regulator used to induce rooting in twig is:
1. Ethylene
2. Auxin
3. Cytokinin
4. Gibberellic acids
17. H.H. cousins confirmed release of volatile substance from P that hastened ripening of stored Q. P and Q are:
1. Banana and apple
2. Orange and banana
3. Banana and orange
4. Apple and banana
18. ABA plays an important role in
1. Seed development
2. Seed maturation
3. Seed dormancy
4. All of these
19. State True or False:
A. Any PGR has diverse physiological effects on plants.
B. Diverse PGR manifest similar effects.
1. T,F
2. F,T
3. T,T
4. F,T
20. Odd one with respect to chemical inhibitors for seed dormancy.
1. Ascorbic acid
2. Nitrates
3. Phenolic acid
4. Abscissic acids