Question

Replicate septum of Spirogyra is characterised by
A) Ring like growth
B) A peg like protuberance
C) A spiral outgrowth
D) A perforation in the plate

Answer 1

Answer:

Replicate septum of Spirogyra is characterised by  Ring like growth.

Explanation:

• Replicate septum, present in the algal species of spirogyra is especially characterised by ring like outgrowths.
• Between adjacent cells, the transverse wall (cross wall) has middle lamella (septum). It's possible that the cross wall will be planed, replicated, or colligated. The centre lamella in the duplicate type generates two ring-like ingrowths, whereas in the colligate type, H-shaped fragments form near the middle lamella.