(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

Why is it usually difficult to demonstrate respiration in green plants?

How is tilling of the soil useful for the crops growing in it?

Fill in the blank : 

_________ are the openings found on older stems. 

Fill in the blank :

Glycolysis occurs in the _______of the cells.

Fill in the blank: 

_____________ is a respiratory substrate

Fill in the blank: 

 _____________ is a chemical which absorbs oxygen of the air.

How do the following structures help in respiration in plants?

Lenticels _____________

How do the following structures help in respiration in plants?

Stomata _____________

How do the following structures help in respiration in plants?

Root hairs ____________

The following two chemical reactions are supposed to indicate a certain process occurring in the green plants under two different conditions:

(a) C₆H₁₂O₆ + 6O₂ → 6CO₂ + _______ + 38 ATP

(b) C₆H₁₂O₆ → ________ + 2 CO₂ + 2 ATP

(i) Fill in the blank in each reaction.

(ii) Name the process represented by the two reactions.

(iii) What are the conditions under which the two reactions (a) and (b) are occurring respectively?

The following diagram refers to an apparatus which is used to demonstrate a physiological process:

What is the purpose of keeping boiled peas soaked in a disinfectant in test tube Y?

The following diagram refers to an apparatus which is used to demonstrate a physiological process: 

Name the biological process which causes the above rise.

The following diagram refers to an apparatus which is used to demonstrate a physiological process:

Define the biological process shown in the experiment.

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of lung volumes and capacities.

Study the diagram carefully and explain briefly the following :

 Tidal volume (TV)

The chemical substance mainly responsible for tooth disorders is 

List any three effective methods for controlling mosquitoes.

Match Column I with that Which is Most Appropriate in Column II.

Mention whether the following statement is true (T) or false (F).

Louis Pasteur discovered a cure for malaria.

Amoebiasis is caused by the protozoan:

Explain briefly, the role of the following health aids:

Antiseptics