The number of pyrenoids in a cell of Spirogyra is

1
2
03-May
Numerous

The correct answer is A. 1.

A pyrenoid is a small, round or oval organelle found in some algae and cyanobacteria. It is involved in the storage and synthesis of starch. In Spirogyra, a pyrenoid is located in the center of each cell, and is surrounded by a starch sheath.

Option B is incorrect because there are usually only one pyrenoid per cell in Spirogyra.

Option C is incorrect because there are usually only one pyrenoid per cell in Spirogyra, and not 3-5.

Option D is incorrect because there are usually only one pyrenoid per cell in Spirogyra, and not numerous.