Q. No.Which of the following is true
(1)Gills are used by most of the aquatic animals
(2)lungs are used by most of the terrestrial animals
(3)Mammals have a well developed respiratory system
(4)All of the above
The mechanism of breathing depends on animal’s
1. habitat
2. level of organisation
3. Both A and B
4. Body segmentation
Which of the following is true about epiglottis
1. thin elastic cartilaginous flap
2. prevent food entry into larynx
3. Coughing occurs due to its improper movement
4. All of these
Assertion : Severe Acute Respiratory Syndrome (SARS) originated in China.
Reason : China is the most populated country of the world
1. Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).
2.Both Assertion (A) and Reason (R) are the true but Reason (R) is not a correct explanation of Assertion (A).
3.Assertion (A) is true and Reason (R) is false.
4. Assertion (A) is false and Reason (R) is true
Which of the following is incorrect
(1)Whale-Lungs
(2)Tadepole larva-Gills
(3)Earthworm-moist skin
(4)Spider-lungs
How many of the following invertebrates exchange O2 with CO2 by simple diffusion
(Sponges, Coelenterates, flatworms, Annelida, Arthropoda, Mollusca, Pisces,)
1. 6
2. 5
3. 4
4. 3
Nasopharynx opens through_________ of the larynx region into the trachea.
1. glottis
2. gullet
3. epiglottis
4. All of these
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