NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice
Match the column-I and column-II. Column-I Column-II (i) Auxin (A) Adenine derivatives (ii) Gibberellin (B) Carotenoid derivatives (iii) Cytokinin (C) Terpenes (iv) ABA (D) Indole compounds
Options
- Ai-B; ii-A; iii-D; iv-C
- Bi-D; ii-B; iii-A; iv-C
- Ci-B; ii-A; iii-C; iv-D
- Di-D; ii-C; iii-A; iv-B
Correct answer
D. i-D; ii-C; iii-A; iv-B
Step-by-step solution
Auxins are weakly acidic growth hormones having an unsaturated ring structure. Indole Acetic Acid (IAA) is the universal natural auxin derived from the precursor amino acid tryptophan with an indole ring structure. Auxins are produced in the stem tip and promotes cell elongation. Gibberellins are weakly acidic, tetracyclic diterpenes with an ent-gibberelline (gibbane) ring structure formed from the precursors mevalonic acid or acetyl co-enzyme A. Gibberellins causes cell elongation of intact plants and increases th