Components of Respiratory System in Humans

Q. Every organism needs food. Does a cell also need it? Explain very briefly.

Q.

How is blood flow in the limbs of Vasa Recta?

Q. Give two examples of life activities which need energy.

Q.

Which type of respiration and reaction will take place in the germinating seeds in the experimental set-up to show CO₂ is evolved during respiration?

1. Anaerobic respiration. Reaction is

   ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6\to 6{\mathrm{O}}_2+6{\mathrm{H}}_2\mathrm{O}+\mathrm{Energy}$

2. Aerobic respiration. Reaction is

   ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6\to 2{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}+2{\mathrm{CO}}_2+\mathrm{Energy}$

3. Respiration in presence of oxygen

4. Aerobic respiration. Reaction is

   ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6+6{\mathrm{O}}_2\to 6{\mathrm{CO}}_2+6{\mathrm{H}}_2\mathrm{O}+\mathrm{Energy}$

Q.

Give reasons for the following statement:

The inside of nose is lined by a sticky fluid called mucus.

Q.

Give the overall chemical equation for the two kinds of respiration in plants: (ii) Anaerobic​

Q.

Which of the following is not a function of nose or nasal chambers?

1. Humidifies the air passing over the mucous layer

2. Helps us in speech

3. Enables rapid exchange of gases between air and blood

4. Respond to the stimuli of smell

Q. Given below is a diagram depicting a physiological process in man. Study the same and answer the following questions:

1. Name the process occurring in the diagram.
2. Label the gases ‘X’ and ‘Y.

Q. The following diagram refers to an apparatus which is used to demonstrate a physiological process:​ ​
(e) Define the biological process shown in the experiment.

Q. Very short answer type.
What is the name of the partition between thorax and abdomen?

Q. Write about why the byproduct of aerobic respiration needs to be removed and how this compound is transported to the lungs.

Q.

The openings through which we inhale is called ___ .

Q. ______ separates the chest cavity from the abdominal cavity.

1. Thorax
2. Pharynx
3. Heart
4. Diaphragm

Q. Schneiderian membrane is found in

1. Nasal passage
2. Trachea
3. Bowman's capsule
4. Loop of Henle

Q.

Write any two differences between the two ways of oxidation of glucose in organisms.

Q. Which of the following match correctly?

1. Superior vena cava - Receives deoxygenated blood from the lower body and organs.
2. Pulmonary artery - Carries deoxygenated blood to the lungs.
3. Hepatic artery - Carries deoxygenated blood to the gut.
4. Inferior vena cava - Receives deoxygenated blood from the head and body.

Q. Which of the following match correctly?

1. Superior vena cava - Receives deoxygenated blood from the lower body and organs.
2. Pulmonary artery - Carries deoxygenated blood to the lungs.
3. Inferior vena cava - Receives deoxygenated blood from the head and body.
4. Hepatic artery - Carries deoxygenated blood to the gut.

Q. Fill in the blank with the most appropriate word.
Emotional speeches often ________ strong feelings.

1. arise
2. give up
3. arouse
4. get up
5. rise

Q. Yawning helps in bringing more air into lungs.

1. True
2. False