Question

7. Phytohormone which inhibits flowering in several plants but stimulates flowering in Pineapple plants is
1) 2-4 D
2) IBA
3) GA,
4) Ethylene​

Answer 1

Answer:

4). Ethylene

Explanation:

2,4-D isa a synthetic auxin. Its a promoter. It doesn't inhibit flowering in any plant.

IBA is an inhibitor. It doesn't promote any thing.

GA is a promoter. But it doesn't promote flowering. It promotes increase in length of axis.

Ethylene is act as both promoter as well as inhibitor.

Ethylene is used to initiate flowering & for synchronising fruit- set in pineapples.

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