2024 Re-NEET Plant Growth and DevelopmentProperties and functions of plant hormones Medium Question 13 of 85 in Plant Growth and Development

Given below are some statements about plant growth regulators. A. All GAs are acidic in nature. B. Auxins are antagonists to GAs. C. Zeatin was isolated from coconut milk. D. Ethylene induces flowering in Mango. E. Abscisic acid induces parthenocarpy. Choose the correct set of statements from the options given below:

A A, C, D
B B, E
C A, B, C
D B, D, E

The answer is A.

Solution

All gibberellins (GAs) are acidic in nature (A is correct). Zeatin (a cytokinin) was first isolated from coconut milk (C is correct). Ethylene induces flowering in mango (D is correct). Auxins are not antagonists to GAs, and it is ABA that is antagonistic to GA (B is incorrect); auxins, not ABA, induce parthenocarpy in fruits like tomatoes (E is incorrect). So the correct set is A, C, D.

Concept Properties and functions of plant hormones

Plant Growth and Development in past papers

85 questions from this chapter have appeared across 24 exam years.