Question

The diagram above represents T.S. of anther. Identify the parts labeled parts as A, B, and C.

• A. A - Connective tissue, B - Pollen grain, C - Stomium
• B. A - Endothecium, B - Connective tissue, C - Pollen grain
• C. A - Pollen grain, B - Connective tissue, C - Endothecium
• D. A - Endothecium, B - Pollen grain, C - Connective tissue

Answer 1

The correct option is A A - Connective tissue, B - Pollen grain, C - Stomium

• The T. S. shows a dithecous tetrasporangiate anther wherein each anther lobe has two long microsporangia which are separated from each other by a shallow groove on the outside, called stomium.
• Stomium (C) serves as a line of dehiscence and has thin-walled hypodermal cells.
• The middle parenchymatous tissue that joins two anther lobes together is termed connective tissue (A).
• The inner sporogenous tissue of each microsporangium differentiates into microspore/pollen mother cell and undergoes microsporogenesis to produce microspores/pollen grains (B) that remain suspended in center of each microsporangium.

So, the correct answer is 'A- Connective tissue, B- Pollen grain, C- Stomium'.