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In cymose inflorescence, the growth of the main axis is definite because the growing point of peduncle is used up in the formation of a flower. Further growth of flowering axis is continued by one or more lateral branches which also end in flower.

1. In cymose inflorescence, the growth of the main axis is definite.
2. In cymose inflorescence, the growth of the main axis is indefinite.
3. In cymose inflorescence, the growth of the main axis is both definite and indefinite.
4. In cymose inflorescence, the growth of the main axis is neither definite nor indefinite.

Correct answer: In cymose inflorescence, the growth of the main axis is definite.

Solution

Cymose inflorescence is determinate: the main axis ends in a flower, so its growth is definite. Further flowers arise from lateral branches, which also terminate in flowers.

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