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 

Which one of the following is surrounded by a callose wall?

(1) Microspore mother cell

(2) Male gemete

(3) Egg

(4) Pollen grain

In angiosperms, microsporogenesis and megasporogenesis

1. occur in anther

2. form gametes without further divisions

3. involve meiosis

4. occur in ovule

Which of these is a diploid structure ?

(1) Pollen grains

(2) Egg

(3) Megaspore

(4) MMC

The following is the diagram of T.S. of anther. Identify the parts labelled A, B and C.

If a stock has 2n = 48 and scion microspore mother cell has 2n = 24; then root cell and the microspores will have .... chromosomes respectively.

(1) 12, 48

(2) 48, 12

(3) 24, 12

(4) 24, 96

A fertilized egg of a plant has 40 chromosomes. The number of chromosomes present in the microspore mother cell is

(1) 20

(2) 40

(3) 60

(4) 80

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

Which among the following is not a wall layer of microsporangium?

1. Endothecium

2. Nucellus

3. Tapetum

4. Middle layers