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Question
The figure given below shows the stages of ripening in a banana. Answer the questions that follow:
- Name the plant hormone responsible for the above changes.
- Mention two characteristic features of this hormone.
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Solution
- Ethylene is the hormone responsible for the above changes. At ordinary temperatures, ethylene is a gas; it helps in the ripening of bananas when stored together.
- Characteristic features of ethylene:
- It is synthesised in senescent leaves and flowers, germinating seeds and ripening fruits.
- It promotes root growth and root hair formation and it also induces and promotes fruit ripening.
RELATED QUESTIONS
______ is a gaseous hormone involved in the abscission of organs and acceleration of fruit ripening.
Name the gaseous plant hormone. Describe its three different actions in plants.
Compound which is most widely used as a source of ethylene is ____________.
In which of the following cases ethylene (gaseous phytohormone) synthesized in large amounts by tissues?
- Ripening of fruits
- Senescence
- Cell division promoting activity
- Actively growing apices of stems and roots.
Which hormone is produced mostly in all parts of a plant?
Which phytohormones is called secondary hormone?
Describe physiological effects and applications of gaseous hormones in plants.
Ethylene is synthesised in ______.
Explain the role of chlorophyllase enzyme in banana.
The hormone which promotes the ripening of fruits is ______.
