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Which of the following functions are con...

Which of the following functions are concerned with the growth hormone auxins
I) They promote flowering in Ananas sativus
II) They promote the abscission of older mature leaves
III) They induce parthenocarpy in Lycopersicon
VI) They are widely used to kill mature monocotyledonous plants

A

I, II, III, IV

B

I, III only

C

I, II, III only

D

I, III, IV only

Text Solution

AI Generated Solution

The correct Answer is:
To determine which functions are concerned with the growth hormone auxins, we will analyze each statement provided in the question: 1. **Statement I: They promote flowering in Ananas sativus.** - Auxins are known to play a role in promoting flowering in certain plants, including Ananas sativus (pineapple). Therefore, this statement is **correct**. 2. **Statement II: They promote the abscission of older mature leaves.** - Auxins are involved in the process of abscission, which is the shedding of older leaves and fruits. This statement is also **correct**. 3. **Statement III: They induce parthenocarpy in Lycopersicon.** - Auxins can induce parthenocarpy, which is the development of fruit without fertilization, in plants such as Lycopersicon (tomato). Thus, this statement is **correct**. 4. **Statement IV: They are widely used to kill mature monocotyledonous plants.** - This statement is **incorrect**. While auxins can be used in herbicides, the specific herbicide 2,4-D (2,4-Dichlorophenoxyacetic acid) is primarily effective against dicotyledonous plants, not monocots. Now, we summarize the correctness of each statement: - Statement I: Correct - Statement II: Correct - Statement III: Correct - Statement IV: Incorrect **Final Conclusion:** The correct functions associated with auxins are statements I, II, and III.
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