Statement A: The peristome is a fringe of teeth-like projections found at the mouth of the capsule.
Statement B: It may be of two types nematodontous and orthodontus.

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Both statement A and statement B are correct

Both statement A and statement B are incorrect

Statement A is correct but statement B is incorrect

Statement B is correct but statement A is incorrect

answer is A.

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Detailed Solution

The peristome teeth are present at the mouth of the capsule. The teeth may be solid cellular tissue or composed only of the thickened portions of the cell walls of adjacent cells. When the teeth of peristome are solid structures composed of bundles of dead cells, it is termed nematodontous peristome are solid structures composed of bundles of dead cells, it is termed nematodontous peristome. It is found in polytrichum, Pogonatum and Tetraphis. Peristome when composed of thin, membranous, transversely barred teeth, and each tooth is made up of the thickened portions of the cell walls of adjacent cells. Such a peristome is called orthodontous.

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