Class 11 Biology · Chapter 8 · Test 4
Plant Growth Regulators
42 MCQs. This part covers meristems, primary and secondary growth, annual rings and dendrochronology, and the influence of the apical meristem on lateral shoots. It also covers the roles of auxins, gibberellins, cytokinins, abscisic acid and ethylene, along with the related exercise MCQ.
42 questions · 30 min · 42 marks
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Sample questions
The first 5 of 42. Try each one, then tap to see the answer.
Question 1
Growth in plants refers to a ____ increase in size.
- ATemporary
- BPermanent
- CReversible
- DDaily
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Answer: B
Growth in plants is a permanent increase in size.
Question 2
In higher plants growth is limited to certain regions known as:
- AGrowing points
- BStomata
- CLenticels
- DPits
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Answer: A
Growth in higher plants is limited to growing points.
Question 3
Groups of cells capable of continuous cell division are called:
- AMeristems
- BSclereids
- CTracheids
- DFibres
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Answer: A
Growing points consist of groups of cells called meristems.
Question 4
How many types of meristems are present in plants?
- ATwo
- BThree
- CFour
- DFive
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Answer: B
There are apical intercalary and lateral meristems.
Question 5
Apical meristems are found at the:
- ATips of roots and shoots
- BBases of internodes
- CPeriphery of stem
- DBark
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Answer: A
Apical meristems are found at the tips of roots and shoots.
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