Question

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 option given below:

• A. A, C, D
• B. B, E
• C. A, B, C
• D. B, D, E

Answer 1

The Correct Option is A

To solve this question, we need to evaluate the given statements about plant growth regulators and determine which are correct. Let's analyze each statement:

1. Statement A: All GAs are acidic in nature.
   Gibberellins (GAs) are a group of plant hormones that promote growth and influence various developmental processes. They are indeed acidic, as they contain a carboxylic acid functional group. Therefore, this statement is correct.
2. Statement B: Auxins are antagonists to GAs.
   Auxins and gibberellins both promote plant growth, albeit in different ways. While auxins primarily influence cell elongation and root development, they do not act as antagonists to gibberellins. Thus, this statement is incorrect.
3. Statement C: Zeatin was isolated from coconut milk.
   Zeatin is a type of cytokinin, which is indeed found in coconut milk. This statement is correct.
4. Statement D: Ethylene induces flowering in Mango.
   Ethylene is known to influence various aspects of plant growth, including fruit ripening and flowering in some species. It plays a role in promoting flowering in mango trees. Therefore, this statement is correct.
5. Statement E: Abscisic acid induces parthenocarpy.
   Abscisic acid (ABA) is mainly known for inhibiting growth and promoting dormancy, particularly under stress conditions. It does not induce parthenocarpy (the development of fruit without fertilization). Thus, this statement is incorrect.

Based on our analysis, the correct set of statements is A, C, and D. Therefore, the correct answer is the option: A, C, D.