Respiratory System MCQs Biology Class-9 ICSE Selina Publishers

Respiratory System MCQs Answer Biology Class-9 ICSE Selina Publishers Solutions Chapter-14. Step By Step ICSE Selina Concise Solutions of Chapter-14 Respiratory System with Exercise-14 including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type and Structured/Application Questions Solved Visit official Website CISCE for detail information about ICSE Board Class-9.

Respiratory System Exe-14 MCQs Answer Biology Class-9 ICSE Concise Selina Publishers

Board ICSE
Publications Selina Publication
Subject Biology
Class 9th
Chapter-14 The Respiratory System
Book Name Concise
Topics Solution of A. MCQs Answer Type
Academic Session 2023-2024

A. Multiple Choice Type 

Respiratory System Class-9 Biology Concise Solutions  

Page 155

Question 1. Choose the correct answer from the options given below:

(a) During inspiration, the diaphragm

(i) relaxes

(ii) contracts

(iii) expands

(iv) gets folded

Answer:

(ii) contracts

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

(i) alveoli

(ii) bronchioles

(iii) tracheoles

(iv) bronchi

Answer:

(i) alveoli

(c) During respiration there is

(i) gain in dry weight

(ii) loss in dry weight

(iii) no change in dry weight

(iv) increase in the overall weight

Answer:

(ii) loss in dry weight

(d) The product of anaerobic respiration in animals is:

(i) Amino acids
(ii) Uric acid
(iii) Lactic acid
(iv) Ethanol

Answer:

(iii) Lactic acid


A. Multiple Choice Type 

Respiratory System Class-9 Biology Concise Solutions  

Page 156

(e) Anaerobic respiration in animals mostly occurs in:

(i) Cardiac muscles
(ii) Skeletal muscles
(iii) Both (i) and (ii)
(iv) Smooth muscles

Answer:

(ii) Skeletal muscles

(f) Which of the following is popularly called as Adam’s apple ?

(i) Larynx
(ii) Glottis
(iii) Pharynx
(iv) Epiglottis

Answer:

(i) Larynx

(g) The basic structural and functional unit of a lung is

(i) Capillaries
(ii) Alveolus
(iii) Bronchioles
(iv) Bronchi

Answer:

(ii) Alveolus

(h) The protective membranous covering of lung is:

(i) Capsule
(ii) Pericardium
(iii) Epithelium
(iv) Pleura

Answer:

(iv) Pleura

(i) The muscular sheet which separates the thoracic and abdominal chamber of the human body is:

(i) Peritoneum
(ii) Diaphragm
(iii) Parietal pleura
(iv) Visceral pleura

Answer:

(ii) Diaphragm

(j) Which of the following produces mucus in the respiratory passage?

(i) Ciliated cells
(ii) Air sacs
(iii) Goblet cells
(iv) Tertiary bronchi

Answer:

(iii) Goblet cells

—  : End of The Respiratory System A. MCQs Answer Class-9 ICSE Biology Solutions :–

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