Give reasons as to why cell division cannot be a type of reproduction in multicellular organisms.

2

(a)

In haploid organism that undergo sexual reproduction, name the stage in the life cycle when meiosis occurs.  Give reasons for your answer.

2

(a)

Which is the triploid tissue in a fertilised ovule? How is the triploid condition achieved?

2

(a)

What are possible types of pollination in chasmogamous flowers. Give reasons.

2

(a)

The number of taxa exhibiting asexual reproduction is drastically reduced in the higher plants (angiosperms) and higher animals (vertebrates) as compared with lower groups of plants and animals. Analyse the possible reasons for this situation.

2

(a)

In which the type of reproduction, do we associate the reduction division? Analyse the reasons for it.

2

(a)

Suggest a possible explanation, why the seeds in a peapod are arranged in a row, whereas those in tomato are scattered in the juicy pulp.

2

(a)

Why is it that there is no natural death in single-celled organisms like Amoeba and bacteria?

2

(a)

Is there a relationship between the size of anorganism and its lifespan? Give two examples in support of your answer.

2

(a)

Give reason for the following
(i) The animals exhibiting external fertilisation discharge large number of gametes.
(ii) Marchantia is a dioecious plant.

2

(a)