NEET BIOLOGY

PLANT PHYSIOLOGY

PLANT GROWTH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This is a hormone that promotes and regulates the growth in plants. It is produced in the meristem tissue.
A
Abscisic acid
B
Auxin
C
Cytokinin
D
Ethylene
Explanation: 

Detailed explanation-1: -Auxin is produced by the tip of the stem and helps in the elongation of cells. It promotes cell elongation, root growth and shoot growth.

Detailed explanation-2: -Auxin is a plant hormone that promotes growth. It is synthesized at the tip of the shot and on the stem apices and is also produced in the buds, stems and root tips. Auxin promotes cell elongation, helps in the growth of stems etc.

Detailed explanation-3: -Auxin is a key regulator of plant growth and development, orchestrating cell division, elongation and differentiation, embryonic development, root and stem tropisms, apical dominance, and transition to flowering.

Detailed explanation-4: -Auxins: These are growth promoting substances that contribute to the elongation of shoots, but at high concentrations they can inhibit growth of lateral buds. In addition to being used as plant growth regulators, auxins can also be herbicides (2, 4-D etc.).

Detailed explanation-5: -Auxin is made in the tip region of the plant stem which is made up of meristematic tissue and this hormone promotes the growth of the plant.

There is 1 question to complete.