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Subject :NSO    Class : Class 7

Which of the following statements are incorrect?
(i) Cellular respiration is a physical process in which food molecules are broken down into carbon dioxide and water.
(ii) Anaerobic respiration involves breakdown of glucose into alcohol and carbon dioxide.
(iii) Breathing rate varies according to oxygen requirement of the body.
(iv) On land, frogs breathe through lungs and in water by gills.
(v) Respiration in plants occurs through stomata and lenticels.

A(i), (ii) and (iv) only
B(i) and (iv) only
C(ii), (iii) and (v) only
D(ii), (iii) and (iv) only


i doubt on it . how could cellular respiration could be a physical one.

Ans 1:

Class : Class 6

Ans 2:

Class : Class 1
illa nila. No

Ans 3:

Class : Class 7
The answer is a this is because we know that cellular respiration is a chemical process as it involves oxidation of food so that statement is wrong. Next statement 2 is also wrong because when anaerobic respiration takes place glucose is broken down into ethyl alcohol carbon dioxide or lactic acid the statement is incomplete hence wrong then statement 4 is wrong because frogs do not have gills.

Ans 4:

Class : Class 6
right?

Ans 5:

Class : Class 6
The answer should be d...

Ans 6:

Class : Class 7
answer should be B

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