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Which of the following are correctly mat...

Which of the following are correctly matched ?
(A) Ethylene - Thinning of cotton , cherry and walnut
(B) ABA - Antagonist to Gibberellic acids
(C) Cytokinin - Speed up the malting process in brewing industry
(D) Auxis - Prevent fruit and leaf drop at early stages
Choose the correct option :

A

(A) , (B) and (C)

B

(A) and (B)

C

(B) , (C) and (D)

D

(C) and (D)

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the statements regarding plant hormones are correctly matched, we will analyze each option step by step. ### Step-by-Step Solution: 1. **Option (A): Ethylene - Thinning of cotton, cherry, and walnut** - Ethylene is known for its role in fruit ripening and abscission (the dropping of leaves, flowers, and fruits). It indeed promotes thinning in crops like cotton, cherry, and walnut by facilitating the dropping of excess fruits or flowers. - **Conclusion**: This statement is **correct**. 2. **Option (B): ABA - Antagonist to Gibberellic acids** - Abscisic Acid (ABA) is known to have effects that are opposite to those of Gibberellic Acid (GA). While GA promotes growth and germination, ABA promotes dormancy and helps the plant respond to stress conditions (like drought) by closing stomata. Thus, ABA acts as an antagonist to GA. - **Conclusion**: This statement is **correct**. 3. **Option (C): Cytokinin - Speed up the malting process in the brewing industry** - Cytokinins are known to promote cell division and delay senescence (aging) in plants. They play a role in the malting process by promoting the germination of grains like barley and wheat, which is essential for brewing. - **Conclusion**: This statement is **correct**. 4. **Option (D): Auxin - Prevent fruit and leaf drop at early stages** - Auxins are responsible for promoting cell elongation and are involved in various growth processes. However, they do not prevent fruit and leaf drop; instead, they are involved in the abscission process. Ethylene is the hormone that helps prevent premature dropping of fruits and leaves. - **Conclusion**: This statement is **incorrect**. ### Final Conclusion: The correct options are (A), (B), and (C). Therefore, the answer is that options A, B, and C are correctly matched.
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