English Medium Class 9 - CBSE Question Bank Solutions for Science

Why does the percentage of gases like oxygen, nitrogen and carbon dioxide remain almost the same in the atmosphere?

Can you name the two organelles we have studied that contain their own genetic material?

How do poriferan animals differ from coelenterate animals?

How do annelid animals differ from arthropods?

What are the differences between amphibians and reptiles?

What are the differences between animals belonging to the Aves group and those in the mammalia group?

How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?

Explain how animals in Vertebrata are classified into further subgroups.

Distinguish between the following:

Chromoplast and chloroplast

Write Short Notes on (B) Plastids.

What is difference between bilateral symmetry and radial symmetry?

Write down four characteristics of Ctenophora and give two examples.

Write down four main characters of Platyhelminthes. Give two examples.

Main characteristics of Nematoda:

Write down four main characters of Annelida.

Define the term hermaphrodite. Give two examples.

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.