HARD
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Match the following.

  Animals   Respiratory
Organs
A. Earthworms 1. Lungs
B. Aquatic arthropods/Molluscs 2. Tracheal tubes
C. Insects 3. Gills
D. Birds/Reptiles/Mammal 4. Moist cuticle
E. Fishes    

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Important Questions on Breathing and Exchange of Gases

EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
A person suddenly starts coughing while swallowing food. This coughing would have been due to improper movement of
MEDIUM
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
A person has 400 million alveoli per lung with an average radius of 0.1 mm for each alveolus. Considering the alveoli are spherical in shape, the total respiratory surface of that person is closest to
MEDIUM
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
During the process of respiration, all of the following processes release CO2 except -
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
The unpaired cartilages supporting the wall of larynx are      
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Match the following
  List-I   List-II
(A) Moist body wall (I) Insects
(B) Tracheal system (II) Amphibian larvae
(C) Book lungs (III) Earthworms
(D) Gills (IV) Aves
    (V) Spiders

The correct match is
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Which of the following is not the function of conducting part of respiratory system?
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
The lungs are spongy and elastic due to _______.
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
If the number of alveoli in an individual is doubled without changing the total alveolar volume, the gas exchange capacity of the lungs will:
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Which is the correct sequence of the air passage in man?
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
In jelly fishes, majority of gaseous exchange takes place through the ______.
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
The figure given below shows a small part of human lung where exchange of gas takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function.

Question Image
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Which of the following shows pulmonary respiration?
MEDIUM
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
The pseudostratified columnar epithelium is found in
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Diffusion membrane is made up of which of the following layers?
MEDIUM
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Given below are four matchings of an animal and its kind of respiratory organ

(i). Silverfish — Tracheal tubes

(ii). Scorpion — Book lung

(iii). Sea squirt — Pharyngeal gills

(iv). Dolphin — Skin

The correct matchings are
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Sound is produced in mammals
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
Select the correct statement.
MEDIUM
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
In the process of respiration, the exchange of gases takes place in
MEDIUM
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
The faster breathing in high fever is due to the
EASY
Biology>Human Physiology>Breathing and Exchange of Gases>Respiratory Organs in Animals
The trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of: