Question

The hormone that support the rapid elongation of internodes Or leaf base in deep water rice plant
A.Abscisic acid
B.Ethylene
C.Cytokinin
D.Gibberellin

Answer 1

Hint: The hormone which is responsible for the growth in the plants is responsible for the elongation if the internodes under water in rice plants.

Complete answer:
1: Like humans plants also have different hormones for different functions and different activities in the plants.
2: Gibberellin hormone is the growth hormone in plants which is responsible for the growth of the plants, elongation of the inter nodes causes the growth of the plant under water.
3: GA is the hormone that ultimately promotes the growth in the plants and elongates the internode distance.
4: Gibberellin is the hormone which is also responsible for the germination of the seed.
5: Elongation in the stem is also a result of the gibberellin hormone .
6: During the adverse environment conditions some plants went into the dormant stage it is also a result of gibberellin hormone.
7: It also promotes the cell division and the elongation of the cells within the plant

So, option D is correct.

Note:
Ethylene is the hormone which is responsible for the ripening of the fruits.
2: To get the excessive benefits some businessmen also use artificial ethylene for artificial ripening of the fruit in the artificial environment.
3: It is also helpful for delivery of all types of fruit in all over the country where these types of fruits are naturally not present in nature. So it is also health beneficial all over the country.