The figure given below shows the stages of ripening in a banana. Answer the questions that follow:

(a) Name the plant hormone responsible for the above changes.
(b) Mention two characteristic of this hormone.

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Solution

(a) The plant hormone responsible for the process of ripening in bananas is ‘ethylene’.
(b) Two characteristics of ethylene are:

Ethylene is the only hormone that exists in a gaseous state at ordinary temperature.

Unlike other plant hormones, its site of synthesis and the site of action are the same i.e. fruits.

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(c) Blood sugar level rises due to deficiency of which hormone?
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Q. Name the hormone responsible for ripening of fruits?

Name the following:
(c) Hormone that helps in the ripening of fruits.

Q. Very short answer type.
Which plant hormone is helpful in the ripening of fruits?

What is the plant hormone responsible for fruit ripening and is important in abscission of leaves as well?

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