Which of the following is not an underground modification of stem?

Tuber

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Corm

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Rhizome

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Phylloclades

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Solution

The correct option is D Phylloclades
Phylloclades are ﬂattened (in Opuntia), or cylindrical (in Casuarina and Euphorbia) green stems of unlimited growth which have taken over the function of photosynthesis. They are not found underground.

Formation of phylloclades helps the plant to grow in dry habitats by preventing transpiration. In some cases phylloclades also store water, mucilage and latex.

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In which of the following underground stem modifications, food is not stored in stem?

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