Question

The outermost and innermost wall layers of microsporangium in an anther are respectively

• A. Epidermis and endodermis
• B. Epidermis and middle layer
• C. Endothecium and tapetum
• D. Epidermis and tapetum

Answer 1

The correct option is D Epidermis and tapetum

Microsporangium

Male reproductive organ in plants is the androecium which is made up of units called stamen.
Stamen is made up of anther and filament. Anther is a bilobed and each lobe has two pollen sacs that consist of a tissue called microsporangia. It produces male gametophytes (pollen grains).

Wall layers of microsporangium

Wall layers of microsporangium-

* Outer single layer is called epidermis.

* Second layer is called endothecium, which is thick and fibrous.

* Third layer is called middle layers which disintegrate after maturation.

* Innermost layer is called tapetum which is nucleated tapetal cells with dense cytoplasm.


Final answer

d. Epidermis and tapetum