Ques. 1AIPMT 2003
In a flowering plant, archesporium gives rise to
- only the wall of the sporangium
- both wall and the sporogenous cells
- wall and the tapetum
- only tapetum and sporogenous cells.
Answer
(2) both wall and the sporogenous cells
Solution
In a young anther, a group of hypodermal archesporial cells divides periclinally.
The outer cells form the primary parietal layer, which gives the wall layers (endothecium, middle layers and tapetum), while the inner cells form the primary sporogenous layer, which gives the sporogenous tissue (microspore mother cells).
∴ Archesporium gives rise to both the wall and the sporogenous cells.
Answer: (2)