Question

Match the labels with their correct description in the given diagram of microsporangium showing different layers of its wall.

• A. $\begin{array}{ccc}\text{Label}& \text{Name}& \text{Description}\\ \text{P}& \text{Epidermis}& \text{Outermost, protective}\\ \text{Q}& \text{Endothecium}& \text{Innermost wall layer}\\ \text{R}& \text{Microspore mother cells}& \text{Forms microsporess}\\ \text{S}& \text{Middle layers}& \text{Help in dehiscence of anther}\\ \text{T}& \text{Tapetum}& \text{Nourishes the developing pollen grains}\end{array}$
• B. $\begin{array}{ccc}\text{Label}& \text{Name}& \text{Description}\\ \text{P}& \text{Epidermis}& \text{Outermost, protective}\\ \text{Q}& \text{Endothecium}& \text{Protective layer}\\ \text{R}& \text{Middle layers}& \text{Help in dehiscence of anther}\\ \text{S}& \text{Microspore mother cells}& \text{Forms microspore}\\ \text{T}& \text{Tapetum}& \text{Innermost layer of the wall}\end{array}$
• C. $\begin{array}{ccc}\text{Label}& \text{Name}& \text{Description}\\ \text{P}& \text{Epidermis}& \text{Outermost, protective}\\ \text{Q}& \text{Tapetum}& \text{Nourishes the pollen grains}\\ \text{R}& \text{Middle layers}& \text{Help in dehiscence of anther}\\ \text{S}& \text{Microspore mother cells}& \text{Forms microspore}\\ \text{T}& \text{Endothecium}& \text{Innermost layer of the wall}\end{array}$
• D. None of the above

Answer 1

The correct option is B $\begin{array}{ccc}\text{Label}& \text{Name}& \text{Description}\\ \text{P}& \text{Epidermis}& \text{Outermost, protective}\\ \text{Q}& \text{Endothecium}& \text{Protective layer}\\ \text{R}& \text{Middle layers}& \text{Help in dehiscence of anther}\\ \text{S}& \text{Microspore mother cells}& \text{Forms microspore}\\ \text{T}& \text{Tapetum}& \text{Innermost layer of the wall}\end{array}$

Microsporangia are sac-like structures present in angiosperm anthers. It has several wall layers as depicted in the diagram: