Plant growth promotor is not

(1) Auxins

(2) Gibberellins

(3) Cytokinins

(4) ABA

(1) Ethylene

(2) ABA

(3) GA

(4) All of these

(1) GA

(2) ABA

(3) Auxin

(4) Ethylene

(1) ABA is Growth inhibiting regulator

(2) Ethylene could fit either of the groups, inhibitors and activators.

(3) Auxins, GA and Cytokinins are plant promotors

(4) Ethylene is largely a promotor of growth activities

(1) Four discovery were accidental one was with a planned experiment

(2) Three discovery were accidental Two were with a planned experiment

(3) Two discovery were accidental Three were with a planned experiment

(4) All five we're accidental

(1) Charles Darwin and his son Francis Darwin

(2) Charles Darwin and his friend Francis Darwin

(3) Charles Darwin and his brother Francis Darwin

(4) Charles Darwin and his colleague Francis Darwin

(1) Coleorrhiza

(2) Coleoptile

(3) Auxin

(4) Scutellum

(1) F. W. Went

(2) Charles Darwin

(3) Francis Darwin

(4) F. Skoog

(1) F. W. Went - Oat seedlings

(2) Charles Darwin - Canary Grass

(3) Francis Darwin - Canary Grass

(4) E. Kurosawa- Orange

(1) Tip of the coleorrhiza is the source of Auxin

(2) Tip of coleoptile is the source of Auxin

(3) Base of coleoptile is the source of Auxin

(4) Base of coleorrhiza is the source of Auxin