Distinguish between asexual and sexual reproduction.  Why is vegetative reproduction also considered as a type of asexual reproduction?

3

(a)

How does yeast reproduce asexually?  Show it diagrammatically.

3

(a)

Describe the process of sporulation seen in Amoeba.

3

(a)

Differentiate between external fertilisation and internal fertilisation with an example for each.

3

(a)

Differentiate between oviparous and viviparous animals with an example of each.

3

(a)

Explain the role of tapetum in the pollen grain wall formation.

3

(a)

Name the organisms with respect to their diverse sexuality
1. Bisexual flower
2.Monoecious plant
3. Dioecious plant
4. Bisexual animal
5. Unisexual animal

3

(a)

A gardener grafted a scion of "Dashahari" mango twig to the stock of Zea mays. He took all precautions during the grafting process but failed to get positive results as the grafting was not successful. Give the possible reason.

3

(a)

Select out any four animals to demonstrate examples of bisexual organism:
Frog, Earthworm, Cockroach, Spider, Sponge, tapeworm, leech, honey, bee, Rat, Rabbit, House fly.

3

(a)

Meiosis is an essential event in the sexual life cycle of any organism. Give two reasons.

3

(a)

How can healthy potato plants be obtained from a desired potato veriety which is viral infected

3

(a)

Name any two organisms and the phenomenon involved where the female gamete undergoes development to form new organisms without fertilisation.

3

(a)

Reproduction is not an essential vital process for the survival of an organism even when the organism invests huge resources in this process, why?

3

(a)

Gametes are never formed by meiosis in haploid individuals. Is meiosis absent or present in haploid organisms? If present then when does it occur?

3

(a)