Free Plant Growth And Development (Daily Quiz: 5) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

The photoperiod in plants is perceived at

(a) flower

(b) meristem

(c) floral buds

(d) leaves

Question-2

The photoperiod in plants is perceived at

(a) Flower

(b) Meristem

(c) Floral buds

(d) Leaves

Question-3

The regulator which retards ageing/senescence of plant parts is

(a) auxin

(b) cytokinin

(c) gibberellin

(d) abscisic acid

Question-4

Which of the following statements are correct ?

1. Cytokinins promote senescence.
2. Auxins control apical dominance.
3. Gibberellins promote shoot elongation.
4. Abscissic acid enables seeds to withstand desiccation.

(a) (ii) and (iii) only

(b) (i) and (ii) only

(c) (i) and (iii) only

(d) (ii), (iii) and (iv) only

Question-5

Auxin was first isolated from ________

(a) Zeatin

(b) Frog's wine

(c) Human wine

(d) None of these