Selina solutions for Concise Biology [English] Class 9 ICSE chapter 14 - The Respiratory System [Latest edition]

During inspiration, the diaphragm

The ultimate end parts of the respiratory system in humans are known as

During respiration there is

Choose the odd one out in the following groups of four items each:

Trachea, Bronchus, Alveolus, Diaphragm

Choose the odd one out in the following groups of four items each:

Ethyl alcohol, Carbon dioxide, Starch, Oxygen

Choose the odd one out in the following groups of four items each:

Diffusion, Respiratory gases, Alveoli, Capillary network

Choose the odd one out in the following groups of four items each:

Trachea, Ciliated epithelium, Mucous, Diffusion

Choose the odd one out in each of the following groups of four items each: 

Oxyhaemoglobin, Carbaminohaemoglobin, Hypoxia, Carboxyhaemoglobin

Choose the odd one out in the following groups of four items each:

Hairy, Moist, Nostril, Vocal cord

Name the body structure concerned with the given functional activity:

Prevents food from entering the trachea during swallowing.

Name the body structure concerned with the given functional activity:

Transports oxygen to the body cells.

Name the body structure concerned with the given functional activity:

Helps to increase the volume of the chest cavity lengthwise.

Name the body structure concerned with the given functional activity:

Combines with the oxygen in the lungs.

Name the body structure concerned with the given functional activity:

Protects the lungs from mechanical injury

Name the body structure concerned with the given functional activity:

Provides actual diffusion of respiratory gases in the lungs.

What is the normal percentage composition of gases in inspired and expired air respectively?

Which chemical compound inside a cell can be termed "Currency of Energy"?

Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs. 

Given below is an example of certain structure and its special functional activity: 

"Kidney and excretion".

Fill in the blanks on a similar pattern. 

Alveoli and _____________.

Given below is an example of certain structure and its special functional activity:

"Kidney and excretion".

Fill in the blanks on a similar pattern.

Mitochondria and _____________.

Given below is an example of certain structure and its special functional activity:

"Kidney and excretion".

Fill in the blanks on a similar pattern.

Epiglottis and _____________.

Given below is an example of a certain structure and its special functional activity: 

"Kidney and excretion".

Fill in the blanks on a similar pattern.

Pleura and _____________.

Given below is an example of certain structure and its special functional activity: 

"Kidney and excretion".

Fill in the blanks on a similar pattern.

Diaphragm and _____________.

Given below is an example of certain structure and its special functional activity: 

"Kidney and excretion".

Fill in the blanks on a similar pattern.

'C' shaped cartilage rings and ____________.

State one function of the following:

Ciliated epithelium lining the respiratory tract

State one function of the following: 

Mitochondria

State one function of the following:

Diaphragm

State one function of the following: 

Intercostal muscles

State one function of the following: 

Pleural fluid

Match the items in Column A with those in Column B.

Under what conditions would the breathing rate increase?

How would you prove that air you breathe out is warmer?

How is the respiratory passage kept free of dust particles?

What is wrong in the statement "We breathe in oxygen and breathe out carbon dioxide".

Differentiate between the following pairs on the basis of the aspect given in the brackets.

Aerobic and Anaerobic respiration (End products of the process)

Differentiate between the following pairs on the basis of the aspect given in the brackets.

Respiration and Photosynthesis (Gas released)

Differentiate between the following pairs on the basis of the aspect given in the brackets.

Photosynthesis and Respiration (Reactants)

Differentiate between the following pairs on the basis of the aspect given in the brackets.

Inspired air and Alveolar air (CO₂ content)

Differentiate between the following pairs on the basis of the aspect given in the brackets.

Respiration and Breathing (Organs involved)

Differentiate between the following pairs on the basis of the aspect given in the brackets.

Tidal volume and Residual volume (Quantity of air)

Give Suitable Explanation for the Following :

Breathing through the nose is said to be healthier than through the mouth.

Give suitable explanation for the following :

Why does gaseous exchange continue in the lungs even during expiration?

Give suitable explanation for the following :

Why does a person feel breathlessness at higher altitudes?

Give Suitable Explanation for the Following :

Why do you shiver and why do your teeth chatter when it is very cold in winter?

With regard to the respiratory system and the process of respiration in man, answer the following questions:

Name the two muscles that help in breathing.

With regard to the respiratory system and the process of respiration in man, answer the following question:

Briefly describe how the above mentioned muscles help in the inspiration of air. 

With regard to the respiratory system and the process of respiration in man, answer the following question :

Give the overall chemical equation to represent the process of respiration in humans.

With regard to the respiratory system and the process of respiration in man, answer the following question: 

What is meant by :

1. Residual air and
2. Dead air space

Starting from the nostrils, trace the path in sequence which the inspired air takes until it reaches the air sacs.

What are the functions of the following in breathing? 

Ribs

What are the functions of the following in breathing?

Diaphragm

What are the functions of the following in breathing?

Abdominal muscles

Given alongside is a diagrammatic sketch of a kind of part in human lungs.

Name the parts numbered 1-4

Given alongside is a diagrammatic sketch of a kind of part in human lungs.

What do the arrows 5 and 6 indicate?

Given below is an overall chemical reaction of a certain process:

C₆H₁₂O₆ →LacticAcid+2ATP+Heat energy

Name the process.

Given below is an overall chemical reaction of a certain process:

C₆H₁₂O₆→LacticAcid+2ATP+Heat energy

Is this reaction applicable to animals or to plants or to both animals and plants?

Given below is an overall chemical reaction of a certain process:

C₆H₁₂O₆→LacticAcid+2ATP+Heat enengy

Name one tissue in which this reaction occur.

Given below are chemical reactions (1 to 5) involving glucose and five other chemical products (A-E).

 Write the reaction number of the following:

(i) Anaerobic respiration in plants __________

(ii) End products in aerobic respiration ____________

(iii) Reaction occurring in liver _________

(iv) Anaerobic respiration in animals ________

(v) Storage in the liver _________

Given below are chemical reactions (1 to 5) involving glucose and five other chemical products (A-E).

 Which reactions (1-5) in the above correspond to the following (write the corresponding number of reaction next to them).

(i) Aerobic respiration

(ii) Change taking place in the liver

(iii) Anaerobic respiration in yeast

(iv) Change taking place in a plant

storage organ, e.g., potato

(v) Anaerobic respiration in animals

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of lung volumes and capacities.

Study the diagram carefully and explain briefly the following :

 Tidal volume (TV)

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of the lung volumes and capacities.

Study the diagram carefully and explain briefly the following :

 Inspiratory reserve volume (IRV)

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of the lung volumes and capacities.

Study the diagram carefully and explain briefly the following :

 Expiratory reserve volume (ERV)

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of the lung volumes and capacities.

Study the diagram carefully and explain briefly the following :

 Vital capacity (VC)

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.

The following diagram shows a group of the lung volumes and capacities.

Study the diagram carefully and explain briefly the following : 

Residual volume (RV)