Question

Moss peristome takes part in

• A. spore dispersal
• B. photosynthesis
• C. protection
• D. absorption.

Answer 1

The Correct Option is A

The question pertains to the part played by the moss peristome. To determine the correct answer, let's examine the role of peristomes in mosses.

Mosses are non-vascular plants that reproduce using spores rather than seeds. The peristome is a structure found surrounding the opening of the moss capsule, which is crucial in the process of spore dispersal.

Explanation of Options:

1. Spore dispersal: The peristome teeth open and close in response to changes in humidity. This mechanism aids in the gradual release of spores, ensuring that spores are dispersed under favorable conditions, contributing significantly to spore dispersal.
2. Photosynthesis: Photosynthesis primarily occurs in the green parts of the moss, such as the leafy structures, rather than in the peristome. Hence, the peristome is not involved in photosynthesis.
3. Protection: While the capsule itself protects developing spores, the peristome specifically functions to regulate spore release rather than acting as a protective barrier.
4. Absorption: Mosses absorb water through their entire surface, particularly through the gametophyte's leafy structures, rather than through the peristome.

Given the above analysis, the correct answer is spore dispersal. The peristome plays a key role in ensuring that spores are effectively dispersed into the environment under conditions that maximize the potential for successful colonization of new areas.