Question

Pollen Grain develops from ____________ of anther
A) Epidermis
B) Endothecium
C) Tapetum
D) Sporogenous tissue

Answer 1

Pollen grains are very minute and they have different shapes and sizes. It is created in the seed-bearing plants and they are stored in the male structures. Through various means, like wind, water and even by insects, they are carried to the female structures where fertilization takes place.

Complete answer:
In flowering plants, which are called angiosperms, the double fertilization takes place.Inside the young anther, just at the centre of each microsporangium, the Sporogenous tissue is located.After meiotic cell division as having taken place inside the Sporogenous cells, the microspore tetrads are formed.
Each Sporogenous cell thus is called ‘pollen mother cell’.At last, when the anther gets matured, it releases the pollen grains.So, from the Sporogenous tissue inside the anther, the pollen grains are developed.

Additional information:
The tapetum is located between Sporogenous tissue and the anther wall. These tapetum layers are important for the development of pollen grains, but it has no contribution of creating pollen grains as Sporogenous tissue does. Here it is important to mention that as we know each anther is bilobed, and each of these lobes contains two structures called microsporangia. In the centre of each microsporangium, after meiosis cell division taking place, numerous Sporogenous tissues create microspores, that is called ‘pollen grains’.

Hence the correct answer is option ‘D’.

Note: Epidermis is the outer layer of the cells in another. Endothecium lies just beneath the epidermis of the wall of the anther. But it secrets some materials which are proven necessary for proper development of pollen grains.