Question

Define ‘starch sheath’​

Answer 1

Starch sheath is endodermis of dicot stem. The endodermis is the central, innermost layer of cortex in some land plants. The endodermis is the boundary between the cortex and the stele. The endodermis helps regulate the movement of water, ions and hormones into and out of the vascular system. It may also store starch, be involved in perception of gravity and protect the plant against toxins moving into the vascular system.

Answer 2

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Starch sheath, as the name indicates, is a layer containing specialized cells that store a large number of starch grains. ... This layer is present inner to the cortex and outside to the pericycle of the dicot stem.