BIOMOLECULES AND ENZYMES

BIOLOGY

HORMONES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What hormone is important in making roots and shoots?
A
cytokinins
B
auxins
C
abscisic acid
D
ethylene
Explanation: 

Detailed explanation-1: -The hormones auxin and cytokinin are essential for plant growth and development. Because of the central importance of root and shoot apical meristems in plant growth, auxin/cytokinin interactions have been predominantly analyzed in relation to apical meristem formation and function.

Detailed explanation-2: -Auxin. Auxin is a plant hormone that aids in the initiation of adventitious roots. Indole acetic acid (IAA) is the naturally occurring auxin found in plants. IAA is involved in nearly every aspect of plant growth and development.

Detailed explanation-3: -Abstract. The hormone cytokinin promotes cell differentiation in plant roots by repressing both auxin transport and responses to auxin at the boundary between the meristem and the root elongation zone.

Detailed explanation-4: -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.

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