Question

Study the following diagram of Transverse Section of a young anther of an angiosperm:

Select the option where parts ‘A’, ‘B’ and ‘C’ are correctly identified.

Options

• A – Connective, B – Endothecium, C – Pollen grain.

• A – Endothecium, B – Connective, C – Pollen grain.

• A – Pollen grain, B – Connective, C – Endothecium.

• A – Endothecium, B – Pollen grain, C – Connective.

Answer 1

A – Connective, B – Endothecium, C – Pollen grain.

The transverse section of a young anther of an angiosperm: 

The transverse section of a young anther of an angiosperm:

1.  
                                Connective
2. 
                                Endothecium
3. 
                                Pollen grain        

Explanation:

• It is called connective tissue. It is the main parenchymatous tissue that holds the two anther lobes together. This means that part (A) is the connective.
• The top layer is called the epidermis, and the layer below it is called the endothecium. This means that part B is the endothecium.
• The microspore mother cells are inside the tapetum. They divide meiotically to make pollen grains. In this case, the part marked (C) is the pollen grain.