Classify meristematic tissue on the basis of origin.

1.	Classify meristematic tissue on the basis of origin.
Answer» Classification of meristematic tissue on the basis of origin: 1. Promeristem / Primordial meristem: a. It is also called as embryonic meristem. b. It usually occupies very minute area at the tip of root and shoot. 2. Primary meristem: a. It originates from the primordial meristem and occurs in the plant body from the beginning, at the root and shoot apices. b. Cells are always in active state of division and give rise to permanent tissues. 3. Secondary meristem: a. These tissues develop from living permanent tissues during later stages of plant growth hence are called as secondary meristems. b. This tissue occurs in the mature regions of root and shoot of many plants. c. Secondary meristem is always lateral (to the central axis) in position e.g. Fascicular cambium, inter fascicular cambium, cork cambium.

Answer»

Classification of meristematic tissue on the basis of origin:

1. Promeristem / Primordial meristem:

a. It is also called as embryonic meristem.

b. It usually occupies very minute area at the tip of root and shoot.

2. Primary meristem:

a. It originates from the primordial meristem and occurs in the plant body from the beginning, at the root and shoot apices.

b. Cells are always in active state of division and give rise to permanent tissues.

3. Secondary meristem:

a. These tissues develop from living permanent tissues during later stages of plant growth hence are called as secondary meristems.

b. This tissue occurs in the mature regions of root and shoot of many plants.

c. Secondary meristem is always lateral (to the central axis) in position

e.g. Fascicular cambium, inter fascicular cambium, cork cambium.

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