DENDROLOGY

DENDROLOGY AND SOCIETY

FAMILIES OF ANGIOSPERMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the name of the hormone that helps the plant develop its fruit and in stem elongation?
A
Gibblerin
B
Auxin
C
Ethlyene
D
Cytokins
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Gibberellins stimulate cell elongation by altering the rheological properties of the cell wall; as a consequence, the water potential of the cell is lowered allowing for water uptake and therefore an increase in cell volume.

Detailed explanation-3: -The plant hormone gibberellin (GA) controls major aspects of plant growth such as germination, elongation growth, flower development, and flowering time.

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