Question

What is apophysis and columella respectively

Answer 1

Answer:

• Spores are not produced in the apophysis but in the theca (or urn), the area between the apophysis and the mouth. ... Many mosses have a columella, a column of sterile tissue that typically extends through the theca and which is surrounded by the spore-producing cells

Answer 2

Answer:

Spores are not produced in the apophysis but in the theca (or urn), the area between the apophysis and the mouth. ... Many mosses have a columella, a column of sterile tissue that typically extends through the theca and which is surrounded by the spore-producing cells.

Explanation:

The columella is a sterile dome shaped structure found at the tip of a sporangiophore, or within a sporangium. The columella functions for nutrient exchange between the active protoplasm below and the developing spores inside the upper portion of the sporangial head.