English Medium Class 9 - CBSE Question Bank Solutions for Science

What do you mean by the term triploblastic animals? Give two example.

What do you mean by the term coelomate animals? Give two examples.

Write down four general characters of phylum Arthropoda. Give two examples.

Give four general characters of phylum Mollusca. Write down two examples.

Write down four general characters of phylum Echinodermata. Give two examples.

Name the phylum in which ambulacral system is present. What is its function?

What are adaptations in fishes due to which they are aquatic?

Write down four characters of Chondrichtyes. Give two examples.

Write down four characters of Osteichtyes and give two examples.

What are differences between the following :

(a) Cartilaginous fishes and bony fishes ;

(b) Amphibia and Reptilia ;

(c) Aves and mammals.

Write down four main characters of chordates.

Write down four characters of mammals. Give two examples.

Describe some flight adaptations of the birds.

Write short note on protochordates.

Give an example each of Urochordata and Cephalochordata.

Give one point of difference between notochord and nerve cord.

Distinguish between Nonchordata and Chordata.

How do animals of Porifera differ from animals of Cnidaria?

Distinguish between polyp and medusa.

Write down four general characters of Porifera. Give two examples.