BIOMOLECULES AND ENZYMES

BIOLOGY

HORMONES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ A plant hormone which causes the elongation of cells in shoot, a major component in ____
A
Auxin
B
Photoperiodism
C
Thigmotropism
D
phototropism
Explanation: 

Detailed explanation-1: -The term auxin is derived from the Greek word auxein, which means “to grow.” Auxins are the main hormones responsible for cell elongation in phototropism (movement in response to light) and gravitropism (movement in response to gravity).

Detailed explanation-2: -Auxins function primarily in stem elongation by promoting cell growth. Indole-3-acetic acid (IAA) is the major naturally occurring auxin and one of the major growth factors in plants. They were the first group of plant growth hormones discovered. Auxins serve dual roles in plants depending on where they are produced.

Detailed explanation-3: -Phototropic movement in plants in response to light is stimulated by the concentration of auxin, the plant growth hormone.

There is 1 question to complete.