Which of the following wall layer anther shows fibrous thickening (of callose)

Which of the following wall layer of anther shows multinucleate condition?

Which of the following is fibrous layer?

Endothecial cells of anther has fibrous thickenings of

The innermost wall layer of anther

The innermost wall layer of anther

Which of the following wall layers of anther play a predominant role in its dehiscence

Which one of the following is fibrous layer

Which one of the following is fibrous layer

Which of the following layer of anther wall helps in protection as well as in the dehiscence of anther for the release of pollen grains ?