Auxins are a class of __.

plant hormones.

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plant proteins.

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plant enzymes.

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plant vitamins.

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Solution

The correct option is A
plant hormones.

Auxins are a class of plant hormones.They have a cardinal role in coordination of many growth and behavioral processes in the plant's life cycle and are essential for plant body development.

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Where is the auxin hormone made in a plant stem?

One of the following plant hormones is responsible for the phenomenon of phototropism in plants. This is :

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(b) eltroxin

(d) auxin

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(a) Hormone that stimulates growth by cell-division.

(b) Growth retarding hormone in plants.

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