Free Plant Growth And Development (Daily Quiz: 13) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Cut or excised leaves remain green for long if induced to root or dipped in

(a) cytokinins

(b) gibberellins

(c) auxins

(d) ethylene.

Question-2

Which one of the following statements is correct ?

(a) Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants

(b) Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies

(c) Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and potassium for plant nutrition in soil

(d) At present it is not possible to grow maize without chemical fertilizers

Question-3

Hormone primarily connected with cell division is

(a) NAA

(b) IAA

(c) cytokinin/zeatin

(d) gibberellic acid.

Question-4

Bacillus thuringiensis (Bt) strains have been used for designing novel

(a) biomineralization processes

(b) biometallurgical techniques

(c) bioinsecticidal plants

(d) biofertilizers

Question-5

Which of the following is not naturally occurring plant hormone?

(a) $GA_{2}$

(b) 2 , 4-D

(c) Gibberellin

(d) I.A.A