Write two differences between amphibia and reptilia.

Give four main features of phylum coelenterate.

Characteristics of some organisms are given. Identify their group and give one example of each.

(a) Single called, eukaryotic and photosynthetic

(b) The body is divided into segments, may be unisexual or hermaphrodite.

What are four main characteristics of chordates?

Why are local names not sufficient to recognise the organism? What are the advantages of keeping scientific names?