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1. Life Process
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Q1 of 367 Page 46

Do all cells use oxygen to produce energy?

No, all cells do not use oxygen to produce energy.


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109

An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-black colour with dilute iodine solution.

(a) What is (i) organism A (ii) food B, and (iii) food H ?


(b) What are C and D?


(c) Name (i) green coloured substance E, and (ii) organ F.


(d) What is the process G?

110

X is a wild animal which eats only the flesh of other animals whereas Y is a domestic animal which feeds mainly on green grass.

(a) What are animals like X known as?


(b) What are animals like Y known as ?


(c) Which animal, X or Y, has a longer small intestine? Why?


(d) Name one animal which is like X.


(e) Name one animal which is like Y.

2

Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.

3

Name one organism which can live without oxygen.

Questions · 367
1. Life Process
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