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Respiratory System Concise ICSE Class-9 Selina Biology Solutions

The Respiratory System Concise Biology Selina Publications Solutions

Respiratory System Concise ICSE Class-9 Selina Biology Solutions Chapter-14 . We Provide Step by Step Answer of Progress Check , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type and Structured / Applications / Skill Type Questions of Exercise-14 Respiratory System. Visit official Website  CISCE  for detail information about ICSE Board Class-9

Respiratory System Concise ICSE Class-9 Selina Biology Solutions Chapter-14


–: Select Topics :–

1_Progress Check (page-137),

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2_Progress Check (page-139),

3_Progress Check (page-144),

4_Progress Check (page-146),

A.MULTIPLE CHOICE TYPE,

B.VERY SHORT ANSWER TYPE,

C.SHORT ANSWER TYPE,

D.LONG ANSWER TYPE

E. Structured /Application/Skill Type

Note :-  Before Viewing Concise Solutions of Respiratory System Chapter-14 . Read the whole chapter carefully with figure. Focus on mechanism of breathing : tissue respiration , heat production. Structures of the respiratory system

Differences between anaerobic respiration in plants and in man. Role of diaphragm and intercostal  muscles in breathing to provide a clear idea of breathing process.Brief idea of gaseous transport and tissue respiration. Brief understanding of respiratory volumes. Effect of altitude on breathing : asphyxiation and hypoxia.


1_Progress check   (Page-137) Chapter-14 The Respiratory system Selina Biology Solutions

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Question –1

Given below……………Process

Answer 1

Energy  , Glucose , Life

Questions – 2

Write…………………respiration.

Answer 2

The chemical equation is as follows

C6H12O6 + 6O2   → 6CO2 +6H20 +Energy

Question – 3

In what ………………. respiration.

Answer 3

A large part of energy liberated is in the form of ATP ( adenosine triphoshate).

Question 4

Give …………….. energy.

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Answer 4

We need energy because we require to synthesize proteins from amino acid.

Production of new cells and enzymes to keep the body warm


2_Progress check   (Page-139) Chapter-14 The Respiratory system Selina Biology Solutions

Question 1

State whether…………………….false

(i)………….

(ii)…………….

(iii)………….

(iv)……………….

Answer 1

(i)…………. False

(ii)……….True

(iii)……… False

(iv)…… True

(v)…… True


3_Progress check (Page-144) Chapter-14 The Respiratory system Selina Biology Solutions

Question 1

Match ……………………Column 2

Answer 1

Column 1 Column 2
A      Nasal chamber (i) Production of voice
B      Epiglottis (ii)  C-shaped rings
C      Air- scas  (iii)  Warms air
D      Lungs (vi)   Drives mucus
E     Larnyx  (v)    Close wind  pipe during swallowing
F     Trachea  (vi)  Network of capillaries
G     Cilla  (vii)  Spongy and elastic

 

Question 2

How……………….. breathing?

Answer 1

The following contribution of structure during breathing

Ribs- They moves upwards and outwards.

Diaphragm – Contracts and flattens

Question 3.

Match…………………….column 2

Answer 3

 

Column 1 Column 2
A      Residual air    1500 ml
B      Vital capacity    4500 ml
C      Total lung  capacity    6000 ml
D     Dead air space     150 ml

 

4_Progress check (Page-146) Chapter-14 The Respiratory system Selina Biology Solutions

Question 1

Mention………………………………..air.

Answer1

Listed below are the differences between Inspired Air and Expired Air

 

Inspired Air Expired Air
Amount of oxygen absorbed at the alveolar is 20.96% and Amount of oxygen absorbed surface is 16.4%
Amount of carbon dioxide released at the alveolar is 0.04% while Amount of carbon dioxide released at the alveolar is 15.4%

 

Question 2

People ………………………. Vision

Use ………………………………….respiration.

Respiration…………………….. plants.

Answer 2

As we go higher the air we breathe decrease in pressure along with a gradual decrease in oxygen content . Lack of oxygen leads to dizziness and un steady vision.

Lime water is used is most of the experiments on respiration aslime water turns milky in the presence of carbon dioxide.

Question 3

Given………………………………wrong

What ………………………….explain

Answer  3

The mistake in the diagram is that when the sheet is pushed upwards  , the volume of the rubber balloons inside the bell jar does not increased as shown in the diagram , instead it decreases . The pressure increase and the balloons should collapse as the air rushed out . The balloons  represents the two lungs.


Review Question

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A.Multiple Choice Type The Respiratory System: Chapter-14 Selina Concise Biology solutions

Question 1

During inspiration, the diaphragm

(a) relaxes

(b) contracts

(c) expands

(d) gets folded

Answer 1

(b) contracts

Question 2

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

(a) alveoli

(b) bronchioles

(c) tracheoles

(d) bronchi

Answer 2

(a) alveoli

Question 3

During respiration there is

(a) gain in dry weight

(b) loss in dry weight

(c) no change in dry weight

(d) increase in the overall weight

Answer 3

(b) loss in dry weight


B. VERY SHORT ANSWER TYPE Solutions of Selina Publishers Biology The Respiratory System,Chapter-14

Question 1

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

(a) Trachea, Bronchus, Alveolus, Diaphragm

(b) Ethyl alcohol, Carbon dioxide, Starch, Oxygen

(c) Diffusion, Respiratory gases, Alveoli, Capillary network

(d) Trachea, Ciliated epithelium, Mucous, Diffusion

(e)Oxy haemoglobin, Carbamino haemoglobin, Hypoxia, Carboxy haemoglobin

(f) Hairy, Moist, Nostril, Vocal cord

Answer 1

(a) Diaphragm

(b) Ethyl alcohol

(c) Diffusion

(d) Diffusion

(e) Hypoxia

(j) Vocal cord

Question 2

Name the body structure concerned with the given functional activity:

(a) Prevents food from entering the trachea during swallowing.

(b) Transports oxygen to the body cells.

(c) Helps to increase the volume of the chest cavity lengthwise.

(d) Combines with the oxygen in the lungs.

(e) Protects the lungs from mechanical injury

(f) Provides actual diffusion of respiratory gases in the lungs.

Answer 2

(a) Epiglottis

(b) Capillaries

(c) Diaphragm

(d) Bronchioles

(e) Ribs

(f) Alveoli or air sacs

Question 3

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

Answer 3

COMPONENT INSPIRED AIR EXPIRED AIR
1. Oxygen 20.96% 16.40%
2. Carbon dioxide 0.04% 4.00%
3. Nitrogen 79.00% 79.60%

 

Question 4

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

Answer 4

ATP or Adenosine Triphosphate is termed as “Currency of Energy” of the cell.

Question 5

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

Column I Column II
(a) Alveoli (i) where aerobic respiration takes place
(b) Bronchioles (ii) lined with hair
(c) Nasal Chamber (iii) diffusion of gases
(d) Bronchi (iv) small air tubes
(v) an inverted Y shaped tube
(vi) a common passage for food and air

 

Answer 5

 

Column I Column II
(a) Alveoli (iii) diffusion of gases
(b) Bronchioles (iv) small air tubes
(c) Nasal Chamber (ii) lined with hair
(d) Bronchi (v) an inverted Y shaped tube

C.SHORT ANSWER TYPE The Respiratory System: Chapter-14 Selina Concise Biology solutions


Question 1

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

“Kidney and excretion”.

Fill in the blanks on a similar pattern.

(a) Alveoli and _____________.

(b) Mitochondria and _____________.

(c ) Epiglottis and _____________.

(d) Pleura and _____________.

(e) Diaphragm and _____________.

(f) ‘C’ shaped cartilage rings and ____________.

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