Assertion (A): In many respects, respiration and photosynthesis in plants are distinctly opposite processes.

Reason (R): In photosynthesis, food is oxidised; whereas in respiration, food is manufactured.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Assertion (A): Kreb's cycle occurs in the cytoplasm of a cell and releases energy.

Reason (R): Glycolysis and kreb's cycle are the two steps of respiration. They both occur in the mitochondria and release energy.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Fill in the blanks:

1. …………… are the openings found on older stems.

2. Glycolysis occurs in the …………… of the cells.

3. …………… is a respiratory substance.

4. Rate of …………… is more than the rate of …………… in the daytime in the case of green plants.

5. …………… is a chemical substance which absorbs oxygen of the air.

6. …………… is used to create vacuum to show anaerobic respiration.

Name the following:

1. Energy currency of cell.
2. Oxidative breakdown of carbohydrates to release energy.
3. An organism which respires throughout life anaerobically.
4. A common phase in both aerobic and anaerobic respiration.
5. A chemical which removes CO₂ from the air.