Introduction to Respiratory System

Q.

Give reasons for the following:

The rate of transpiration is more on a bright sunny day than a cloudy day.

Q.

The process of intake of oxygen to burn down food chemically and release energy in the body is known as__.

1. breathing

2. excretion

3. circulation

4. respiration

Q. The air we breathe in, contains 21$\%$ of ______ and 0.04$\%$ of ______.

1. Nitrogen, Oxygen
2. Oxygen, Carbon dioxide
3. Carbon dioxide, Nitrogen
4. Nitrogen, Carbon dioxide

Q.

Breathing is a part of which of the following processes?

1. Excretion

2. Photosynthesis

3. Digestion

4. Respiration

Q. How is respiration related to digestion and breathing?

Q.

List 2 factors that increase the rate of transpiration?

Q.

Transpiration decreases with the

1. closing of stomata

2. opening of stomata

3. availability of water

4. high temperature

Q.

Stored energy of carbohydrates is released during

1. Photophosphorylation

2. Photosynthesis

3. Fat metabolism

4. Respiration

Q.

___________ is the process in which water vapour is sent out constantly through the stomata.

Q. Which of the following is true about glycolysis?

1. Glycolysis takes place in the mitochondria.
2. Glycolysis is the last step in aerobic respiration.
3. One glucose molecule is broken down to 3 pyruvic acid molecules.
4. Glycolysis is a anaerobic process.

Q. Which one of these substances need to be transported within a body?

(a) Food
(b) Oxygen and waste materials
(c) Water and minerals
(d) All of these

Q.

Exchange of gases between the blood and the tissues of the body takes place by which of the following mechanism?

1. External respiration

2. Internal respiration

3. Cellular respiration

4. Counter-current exchange

Q.

Stored energy of carbohydrates is released during ___.

1. photosynthesis

2. respiration

3. chemosynthesis

4. homeostasis

Q. Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

1. alcohol and lactic acid
2. alcohol and $C{O}_2$
3. lactic acid and $C{O}_2$
4. lactic acid only

Q. Match the following parts of the respiratory system with their correct function.

Q.

The process of intake of oxygen to burn down food chemically and to release energy in the body is known as:

1. Breathing

2. Circulation

3. Excretion

4. Respiration

Q. Which vessel is responsible for the transport of water in plants?

1. Stomata
2. Chloroplast
3. Xylem
4. Phloem

Q.

Exchange of gases between the blood and the tissues of the body takes place by which of the following mechanism?

1. Internal respiration

2. External respiration

3. Counter-current exchange

4. Cellular respiration

Q. Breathing is the process of inhaling and expelling of air through the mouth and nose.

1. True
2. False