Which of the following statements regarding the structure of microsporangium are correct? (i) Microsporangium is generally surrounded by four wall layers - epidermis, endothecium, middle layers and tapetum. (ii) Outer three layers perform functions of protection and dehiscence of anthers. (iii) Cells of tapetum undergo meiosis and produce microspore tetrads.

Question

Which of the following statements regarding the structure of microsporangium are correct? (i) Microsporangium is generally surrounded by four wall layers - epidermis, endothecium, middle layers and tapetum. (ii) Outer three layers perform functions of protection and dehiscence of anthers. (iii) Cells of tapetum undergo meiosis and produce microspore tetrads. (A) (i) and (ii) (B) (ii) and (iii) (C) (i) and (iii) (D) (i), (ii) and (iii)

Tardigrade Admin · Accepted Answer

A microsporangium or future pollen sac is a cylindrical sac which appears circular in transverse section. It consists of two parts, outer wall and central homogeneous sporogenous tissue. Microsporangial wall has four types of layers — epidermis, endothecium, 1-3 middle layers and tapetum. The outer three layers perform the function of protection in the young anther and mechanism of dehiscence in the ripe anther.