Question

Sequence of development during the formation of embryo sac is

• A. Archesporial cell $\to$ Megaspore $\to$ Megaspore mother cell $\to$ Embryosac
• B. Megasporocyte $\to$ Archesporial cell $\to$ Megaspore $\to$ Embryosac
• C. Megaspore $\to$ Megaspore mother cell $\to$ Archesporial cell $\to$ Embryosac
• D. Archesporial cell $\to$ Megaspore mother cell $\to$ Megaspore $\to$ Embryosac

Answer 1

The correct option is D Archesporial cell $\to$ Megaspore mother cell $\to$ Megaspore $\to$ Embryosac

The archesporial cell is a part of megasporangium and it divides to give rise to megaspore mother cell. A diploid megaspore mother cell is formed and it undergoes meiosis and gives rise to haploid megaspore cell which then develops into haploid female gametophyte i.e. embryosac.

So, the correct answer is 'Archesporial cell $\to$ Megaspore mother cell $\to$ Megaspore $\to$ Embryosac'.