Q.

In Acacia melanoxylon, the part modified to form phyllode is

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a

primary rachis

b

petiole

c

leaf 

d

secondary rachis

answer is D.

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Detailed Solution

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Phyllode is a modified green, flattened petiole or secondary rachis performing photosynthesis due to suppression of leaf lamina. In Acacia melanoxylon, petiole is modified to form phyllode.

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