Write a note on bulliform cells. Write any three differences betw… - Vidyadip

Question

Write a note on bulliform cells. Write any three differences between exarch and endarch.

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Answer

Bulliform Cells: In the leaves of some plants, especially monocotyledons, some upper epidermal cells are swollen. These are called bulliform cells. They store water and swell due to which the leaves open. As soon as these cells release water, the leaves fold and close. Example: Leaves of plants of Gramineae family.

Exarch	Endarch
1. This condition is found in the vascular bundles of the root.	Found in the stem.
2. In this, protoxylem is situated towards the outside and metaxylem is situated towards the inside.	Protoxylem is situated towards the inside and metaxylem is situated towards the outside.
3. The development of cell progresses from outside to inside	Development progresses from inside to outside.

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