Question

Identify the correct sequence of structure of androecium in chronological order of development.

• A. Sporogenous tissue $\to$ pollen grain $\to$ microspore tetrad $\to$ male gametes
• B. Sporogenous tissue $\to$ microspore tetrad $\to$ pollen grain $\to$ male gametes.
• C. Pollen grain $\to$ sporogenous tissue $\to$ microspore tetrad $\to$ male gametes
• D. Microspore tetrad $\to$ sporogenous tissue $\to$ pollen grain $\to$ male gametes

Answer 1

Answer: (B)

A young anther consists of four microsporangia where there is compactly arranged cells called sporogenous tissue. As it develops, sporogenous tissue divides meiotically to form microspore tetrad which is arranged in a cluster. Then they mature and dehydrate and dissociate from each other to form pollen grains. As the pollen grains mature there are two male gametes, the vegetative cell and generative cell.