Microsporangium

Identify the homogeneous group of cells which occupy the centre of each microsporangium.

• Nucellus

• Synergid cells

• Sporogenous tissue

• Megaspore mother cell

The four walls of a microsporangium in corect order from outside to inside are

• Epidermis, endothecium, middle layers, tapetum

• Epidermis, Tapetum, middle layers, endothecium

• Tapetum, middle layers, endothecium, epidermis

• Endothecium, middle layers, tapetum, epidermis

What is the function of tapetum

• Forms exine

• Forms pollenkitt

• Provides nutrition to microspore

• Forms recognition proteins on pollen

• All

A typical angiosperm anther is.......... with

each lobe having two theca, i.e., they are ...............................

• bilobed

• Syncarpous

• dithecous

• Apocarpous

Which one of the following statement is correct:

• Hard outer layer of pollen grain is called intine.

• Sporogenous tissue is haploid

• Endothecium produces microspores

• Tapetum nourishes the developing pollen.

Microsporangium also known as

• pollen sac

• anther

• filament

• stamen

What does the microsporangia develop into?

• Pollen grain

• Pollen tube

• Pollen sac

• Pollen mother cell

In a trnsverse section, a typical microsporangium appears in outline as

• Rectangular

• Longitudinal

• Circular

• Oval

Is the microsporangium haploid or diploid?

• haploid

• diploid

The diagram shows the transverse section of an anther. Which of the following labelled structure will produce the gametes

• I

• II

• III

• IV