List the adaptive features of water-pollinated flowers like Vallisneria.

2

(a)

Why is it necessary to emasculate a bisexual flower in a plant breeding programme? Mention the condition under which emasculation is not necessary.

2

(a)

Differentiate between coleoptile and coleorhiza.

2

(a)

Differentiate between testa and integument.

2

(a)

How many are the cells of tapetum different from the cells of the other wall layers?

2

(a)

Why do species with abiotic mode of pollination produce larger number of pollen-grains, when compared to those with biotic pollination?

2

(a)

What is micropyle in a seed? Mention its significance.

2

(a)

What will be the advantage of making the hybrids into apomicts? Why?

2

(a)

Name the various methods by which anther dehisces.

2

(a)

Differentiate between quiescence and dormancy with reference to seed germination.

2

(a)

Draw a diagram of a section of a megasporangium of an angiosperm and label funiculus, micropyle, embryo sac, and nucellus.

2

(a)

Give two reasons for keeping beehives in crop fields during flowering period.

2

(a)

There are two person A & B living in the ONGC colony Sivas agar ,they are neighbor and planted bottle gourd plant in their garden but the plant of person A bears fruits while plant of Mr. B has no fruit at all. Although the physical condition same for both. What will be your explanation to them?

2

(a)