(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Biology

Complete the following by filling in the blanks numbered 1 to 10 with the appropriate word/term:

Photosynthesis involves light reaction and dark reaction. During light reaction, the chlorophyll present in the (1) ______ gets activated by absorbing light energy. This energy splits (2) ______ molecules to (3) ______ and oxygen and releases two electrons. This process is called (4) ______. The (5) ______ ions are picked up by NADP to form (6) ______. The ADP is converted to (7) ______. This process is called (8) ______. During the dark phase, the compound produced at the end of the light reaction reacts with carbon dioxide to form (9) ______. This product is converted to starch. The process is called (10) ______.

The diagram alongside represents an experiment conducted to prove the importance of a factor in photosynthesis. 

Study the same and then answer the questions that follow: 
(i) Name the factor being studied in his experiment. 
(ii) Why was the plant kept in a dark room before conducting the experiment? 
(iii}Why was the experimental leaf then kept in 
1. boiling water 2. methylated spirit? 
(iv) Name the solution used to test for the presence of starch in the leaf. 
(v) What will we observe in the experimental leaf at the end of the starch test? 
(vi) Give a balanced chemical equation to represent the process of photosynthesis. 

Choose the correct answer:
Which one of the following is the best reason for leaving a plant in a dark place before carrying out experiments on photosynthesis?

Choose the correct answer:
In a typical leaf, photosynthesis occurs mainly in ___________

Choose the correct answer:
Photosynthesis is more active in ___________

Choose the correct answer:
Which of the following gas is used in photosynthesis?

Choose the correct answer:
The process of photosynthesis occurs by _________

Mention if the following statement is true or false:

Passive immunity develops after having a disease.

Mention if the following statement is true or false:

WHO procures and provides blood to victims of war.

Give the appropriate term for the following:
Providing readymade antibodies from outside for treating certain infectious diseases.

Define the following:

Health

Define the following:

Immunity

Define the following:

Immunization        

Define the following:

Acquired disease  

Choose the correct answer:
World Health Day (WHO) was formed in ________

Choose the correct answer:
World Health Day is celebrated on _________