Q2 of 49 Page 6

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

The higher plants that are the angiosperms, and the higher animals that are the vertebrates have complex structural organisation, this allows them to use sexual mode of reproduction. It allows them to have:

1. Genetically variable offspring are produced.


2. They have more superior survival and adaptation capability than those which are produced asexually.


Lower plants and animals do not have these variations as they produce by asexual reproduction.


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15

What do the following parts of a flower develop into after fertilisation?

a. Ovary ______________


b. Ovules ______________


 1

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

 3

Honeybees produce their young ones only by sexual reproduction. In spite of this, in a colony of bees we find both haploid and diploid individuals. Name the haploid and diploid individuals in the colony and analyse the reasons behind their formation.

 4

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