Question

Cells of which layer of microsporanguim are binucleate?

• A. Epidermis
• B. Endothelium
• C. Middle layer
• D. Tapetum

Hint:

The tapetum plays a critical role in the development of pollen by providing essential nutrients.

Answer 1

The Correct Option is D

Step 1: Understand the structure of microsporangium.
A microsporangium is a part of the plant that contains the microspores. These structures are vital for the formation of pollen grains.
Step 2: Identify the layers.
The microsporangium has several layers, including: - Epidermis: The outermost layer. - Endothelium: A middle layer responsible for nutrient transport. - Middle layer: Provides structural support. - Tapetum: The innermost layer.
Step 3: Focus on the tapetum.
The tapetum is unique because its cells are binucleate (contain two nuclei). These cells are essential for providing nutrients and enzymes to the developing pollen.
Step 4: Conclusion.
Since binucleate cells are found in the tapetum, the correct answer is (D) Tapetum.
Final Answer: The cells of the tapetum layer in the microsporanguim are binucleate.