Free Plant Growth And Development (Daily Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Cell elongation in internodal regions of the green plants takes place due to

(a) cytokinins

(b) indole acetic acid

(c) gibberellins

(d) ethylene

Question-2

Cytokinins

(a) influence water movement

(b) promote abscission

(c) help retain chlorophyll

(d) inhibit protoplasmic streaming

Question-3

Assertion:
Ethylene helps the plants to increase their surface area for absorption.
Reason:
Ethylene promotes root growth and root hair formation.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-4

Primary precursor of IAA is

(a) tyrosine

(b) phenylalanine

(c) tryptophan

(d) leucine

Question-5

Identify the part of A, b and C in this figure.

(a) A–Juvenile, B–Terrestrial habitat, C–Water habitat

(b) A–Water habitat, B–Juvenile, C–Terrestrial habitat

(c) A–Terrestrial habitat, B–Juvenile, C–Water habitat

(d) A–Juvenile, B–Water habitat, C–Terrestrial habitat