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

Given below is a set of six experimental set-ups (A-F), kept in this state for about 24 hours.

In which tube/tubes the limewater will turn milky?

Given below is a set of six experimental set-ups (A-F), kept in this state for about 24 hours.

What is the purpose of the set-up F?

Given below is a set of six experimental set-ups (A-F), kept in this state for about 24 hours.

What conclusion can you draw from this experiment?

In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follows:  

Name the physiological process being studied.

In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follows: 

What is the function of soda lime in the bottle 'A' and why is limewater placed in bottle 'B'?

In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:

What change would you expect to observe in bottle 'D'?

In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:

Represent the physiological process named in question 4.1 in the form of a chemical equation.

In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:

In order to obtain accurate results, the bottle 'C' should be covered with black cloth. Why?

In order to study and prove a particular physiological process in plants, the following experiment was set up. Study the same and then answer the question that follow:

If bottle 'C' was fitted with a 3-holed rubber stopper and a thermometer was introduced in such a way that its bulb reaches close to the germinating seeds, what would you observe? Why?

Name the following:

The drug based on arsenic compound, produced in 1910, which killed germs of syphilis.

How many types of epithelial tissues have you studied? Write their functions.

Give structure, types and functions in brief  of the following:
Epithelial tissue

Name the tissues found
at the outer layer of skin.

Name the tissues found:
at the inner lining of the trachea.

Name the tissues found:
in the testes and ovaries.

Given alongside is an experimental set up to demonstrate a phenomenon in a plant:

(a) What is the aim of this experiment?

(b) Why was the bell jar covered with a black cloth?

(c) What is the function of caustic soda in this experiment?

(d) Give an overall chemical equation of the process mentioned in (a) above.

(e) Mention one precaution that should be taken to ensure more accurate results. What change, if any, would you observe in the lime water in Flask A and B? In each case give a reason for your answer.

The given fig. refers to an apparatus which is used to demonstrate a physiological process:

(a) What is the purpose of keeping potassium hydroxide solution in test tubes X and Y?

(b) What is the purpose of keeping boiled peas soaked in disinfectant in test tube Y?

(c) Why has coloured water risen in tube 1?

(d) Name the biological process which causes the above rise.

(e) Define the biological process shown in the experiment.

Name the following:

The chemicals generally used to absorb carbon dioxide in respiratory experiments.

Name the following:

The solution that turns milky when carbon dioxide is passed through that solution.

Explain why respiration is said to be a reversal of photosynthesis.