Biology
Assertion (A): More energy is released (38 ATP) in the aerobic respiration as compared to anaerobic respiration during which only 2ATPs are produced by the breakdown of one molecule of glucose.
Reason (R): Complete oxidation of glucose occurs in presence of oxygen whereas glucose cannot be broken down completely in absence of oxygen. Hence, amount of energy produced varies between the two kinds of respiration.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true and R is the correct explanation of A.
Reason — A is true as in aerobic respiration, one glucose molecule releases about 36–38 ATP, while in anaerobic respiration, only about 2 ATP are produced.
R is true as in the presence of oxygen, glucose undergoes complete oxidation into carbon dioxide and water, releasing a large amount of energy. In the absence of oxygen, glucose is incompletely broken down, leading to much less energy production.
Therefore, Both A and R are true and R is the correct explanation of A is the correct option.
Related Questions
Assertion (A): Stomata are tiny openings found mainly on the lower surface of the leaves.
Reason (R): They cannot be opened or closed for the process of photosynthesis when exposed to direct sunlight as guard cells become inactive in direct sunlight.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): The extensive network of veins within the leaf lamina supplies water and minerals in every cell and also helps in the translocation of prepared food to the other parts of the plant.
Reason (R): The flow of fluids in the veins of leaves or veins of our body, both are unidirectional.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Photosynthesis occurs in the cells of leaves which contain chloroplasts whereas respiration occurs in all other cells which lack chloroplasts.
Reason (R): The pigment chlorophyll traps solar energy for the process of photosynthesis whereas it does not participate in the process of respiration.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Suppose we compare the leaf with a factory, match the items in Column A with those in Column B.
Sl.
No.Column A Column B 1. Cells in the leaf Raw materials 2. Chloroplast Power 3. Sunlight Machinery 4. Oxygen and water End product 5. Carbon dioxide and water By product 6. Glucose Work room