Question

Observe the given diagram and answer the following questions. 
(Note: This question refers to the standard diagram of Microsporogenesis in flowering plants) 

a) Which type of cell division occurs in the diagram marked A 
b) The two cells formed in B are called ________ 
c) In figure marked C, four cells are formed. What are they? 
d) What happens to the cells marked C? 
e) What is the total process called? 
 

Hint:

In angiosperms, the microspore tetrad is usually tetrahedral in shape. Each microspore eventually develops a hard outer layer called the exine and an inner layer called the intine.

Answer 1

Step 1: (a) The process starts with a diploid Microspore Mother Cell (MMC) undergoing Meiosis to reduce the chromosome number to haploid.
Step 2: (b) After the first meiotic division (Meiosis I), two cells are formed, which are known as a Microspore Dyad.
Step 3: (c) After the second meiotic division (Meiosis II), four haploid cells are produced, arranged in a group called the Microspore Tetrad.
Step 4: (d) As the anthers mature and dehydrate, the microspores in the tetrad dissociate from each other and develop into pollen grains.
Step 5: (e) The entire process of formation of microspores from a pollen mother cell through meiosis is called Microsporogenesis.