Respiration in Humans

Q.

During inhalation, the diaphragm moves ___.

1. Upward

2. Downward

3. Right

4. Left

Q. ___ prevents the entry of food into the respiratory tract.

1. Pharynx
2. Glottis
3. Epiglottis
4. Larynx

Q.

In which of the following processes does diffusion play an important role?

1. Respiration

2. Ingestion

3. Photosynthesis

4. Excretion

Q.

What is the function of sac like structures present at the end of bronchioles?

1. Exchange of respiratory gases

2. Protection of lungs

3. Protection from bacteria

4. Storage of respiratory gases

Q.

Respiration takes place through the process of diffusion.

1. True

2. False

Q.

All living organisms need ------------------------ for respiration.

Q.

Do plants close stomata at night?

Q.

Respiration is the process in which :

1. energy is stored in the form of ADP.

2. energy is released and stored in the form of ATP.

3. energy is not released at all.

4. energy is used up.

Q. Co-relate this setup with the working of the human respiratory system. Here rubber sheath represents the diaphragm. Select the events that occur when diaphragm contracts or rubber sheath is pulled.

1. Pressure inside the lungs is reduced.
2. Pressure inside the lungs is increased.
3. Size of lungs increases.
4. Size of lungs decreases.

Q. ___ is supported by ‘C’ shaped cartilagenous rings.

1. Bronchi
2. Pharynx
3. Larynx
4. Trachea

Q.

During inhalation, ribs move ___.

1. left

2. down

3. up

4. right

Q.

Metabolic process of cell in which breakdown of food takes place to release energy is known as ___.

1. cellular preparation

2. cellular digestion

3. cellular excretion

4. cellular respiration

Q. In lungs, gaseous exchange takes place in

1. bronchioles
2. alveoli
3. epiglottis
4. trachea

Q. How to draw nephron ? Explain with steps?

Q.

_______ is a process that takes place in living beings while breathing air in and out.

Q. The olfactory receptors in human body are found in

1. Nose
2. Skin
3. Throat
4. Gums

Q.

How is ventilation increased in humans?

Q.

Number of times a person breathes per minute is termed as the ___.

1. photosynthesis rate

2. respiration rate

3. digestion rate

4. breathing rate

Q.

O₂ is absorbed by the alveolar surface.

1. True
2. False

Q. Why would trachea in absence of cartilaginous ring collapse during inspiration?

Q.

During diffusion of carbon dioxide between blood and air, which of the following condition is true?

1. The concentration of carbon dioxide is higher in blood

2. The concentration of carbon dioxide is higher in air

3. Nothing can be said about the concentration of carbon dioxide

4. The concentration of carbon dioxide is the same in blood and air

Q.

The sac-like structures at the end of the bronchiole are called ___.

Q.

Which of the following molecules is the source of oxygen that's released during photosynthesis?

1. Water

2. Carbon dioxide

3. Chlorophyll

4. Glucose

Q.

When the lungs expand, they create a region of low pressure inside.

1. False

2. True