The cells of which of the following layers of the anther wall are multinucleated due to endomitosis?

1. Epidemis

2. Endothecium

3. Middle layer

4. Tapetum

A typical angiosperm anther is dithecous which means that it is:

1. One lobed and the lobe has two theca

2. Two lobed and each lobe has two theca

3. Two lobed and each lobe has one theca

4. Four lobed and each lobe has two theca

Which of the following layers in the wall of an anther nourishes the developing pollen grains?

1. Tapetum

2. Epidermis

3. Endothecium

4. Middle layers

Which one of the following statements is not true?

Which one of the following statement is correct?

(1) Hard outer layer of pollen is called intine

(2) Sporogenous tissue is haploid

(3) Endothecium produces the microspores

(4) Tapetum nourishes the developing pollen 

Ubisch bodies are secreted from

(1) ovule

(2) tapetum

(3) both of these

(4) none of these

What is the charasteristic of tapetum ?

1. It does not store food.

2. It is multi-nucleated.

3. It is multi-layered structure.

4. It nourishes the megaspore.

Which among the following is attached to the proximal end of filament?

(1) Stamen

(2) Anther

(3) Petal

(4) Pollen sac

What is the number of microsporangia in each lobe of an angiosperm anther?

1. Four

2. Two

3. Eight

4. One

Which among the following extend longitudinally to become pollen sac?

1. Microsporangia

2. Filament of anther

3. Tapetum

4. Endothecium