Plant Growth and Development MCQs | NCERT Biology
This chapter-wise MCQs on 'Plant Growth and Development' for NEET aspirants, based on NCERT Biology Class-11 (Chapter-13) with Answer Key and Solutions.
1.
Read the book NCERT Biology class-11 (chapter- 13): Plant Growth and Development from here.
1. Question
The phytohormone which was first isolated from human urine is:
Gibberellic acid
Cytokinin
Auxin
Ethylene
Correct Answer
Wrong Answer
2. Question
ABA induces :
Seed dormancy
Syngamy
Parthenocarpy
Germination
Correct Answer
Wrong Answer
3. Question
Which statement is not correct about ethylene ?
Synthesized in large amount by tissues undergoing senescence.
Enhances respiration rate
Break dormancy in peanut seeds
Promotes male flower in cucumber
Correct Answer
Wrong Answer
4. Question
Select the correct pair :
Increase in sugarcane yeild – Ethylene
Delay of leaf senescence – ABA
Fruit & flower abscision in few plants – Ethylene
Sprouting of potato tubers – Cytokinin
Correct Answer
Wrong Answer
5. Question
- GA – Extend market period of fruits
- Ethylene – Increase surface area of absorption
- CK – Apical hook formation
- GA – Internodal elongation in deep water rice plant
How many matches are incorrect ?
Four
Three
Two
One
Correct Answer
Wrong Answer
6. Question
Select the incorrect statement for Abscisic acid:
It acts as a general plant growth inhibitor and an inhibitor of plant metabolism
ABA inhibits seed germination
ABA helps seeds to withstand desiccation and other factors unfavourable for growth
In most situation, ABA act as an antagonist to ethylene
Correct Answer
Wrong Answer
7. Question
Plants show another interesting phenomenon. The living differentiated cells, that by now have lost the capacity to divide can regain the capacity of division under certain conditions. This phenomenon is termed as:
Dedifferentiation
Redifferentiation
Differentiation
Decapitations
Correct Answer
Wrong Answer
8. Question
Match the following Columns :
| Column I | Column II |
|---|---|
| a. Adenine derivative | i. Ethylene |
| b. Terpenes derivatives | ii. Gibberellic acid |
| c. Gaseous hormone | iii. Kinetin |
| d. Carotenoid derivative | iv. Abscisic acid |
a-i, b-ii, c-iii, d-iv
a-i, b-iii, c-ii, d-iv
a-ii, b-i, c-iii, d-iv
a-iii, b-ii, c-i, d-iv
Correct Answer
Wrong Answer
9. Question
Given below are two statements:
Statement I: In arithemetic growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures.
Statement II: Sigmoid curve is a characteristic of only large size organism growing in a natural environment.
Choose the correct answer from the option given below.
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are correct
Correct Answer
Wrong Answer
10. Question
A leaves have surface area 10 cm2 after some time due to growth their surface area increased and finally 15 cm2. What is the % of relative growth rate:
25 %
50 %
33.3 %
66.6 %
Correct Answer
Wrong Answer
11. Question
Which of the following is the incorrect match:
ABA → Inhibits seed germination
ABA → Closure of stomata
Cytokinins → Stress hormone
Ethylene → Sprouting of potato tubers
Correct Answer
Wrong Answer
12. Question
Select the correct statement for cytokinins:
Cytokinins help overcome the apical dominance
They promote nutrient mobilisation which help in the delay of leaf senescence
It helps to produce new leaves, chloroplasts in leaves
All
Correct Answer
Wrong Answer
13. Question
Typical growth curve in plants are:
stair-steps shaped
parabolic
sigmoid
linear
