Alternate phyllotaxy with inferior ovary is seen in _A_ and opposite phyllotaxy with inferior ovary is seen in _B_. What is A and B respectively ?

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Guava and Alstonia

Sunflower and Guava

Mustard and sunflower

China rose and Alstonia

answer is A.

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Detailed Solution

In alternate type of phyllotaxy, a single leaf arises at each node in alternate manner Ex- china rose,
mustard and sunflower plants.

In opposite type, a pair of leaves arise at each node and lie opposite to each other Ex- Calotropis and guava plants. Inferior ovary is common in Asteraceae and Cucurbitaceae and guava

Alternate phyllotaxy with inferior ovary is seen in Sunflower

opposite phyllotaxy with inferior ovary is seen in Guava

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