Q. No.
Which of the following animal is correctly matched to their corresponding respiratory organ ?
1. Earthworm - Open circulatory system with
haemoglobin
2. Cockroach - Three pairs of spiracles in each
thorax
3. Frog in water - Skin and lungs
4. Frog on land - Skin, buccal cavity, lungs
Contraction of sternohyal muscles during breathing in frog
1. Opens glottis
2. Closes glottis
3. Lowers floor of oral cavity
4. Raises floor of oral cavity
In a frog leaping frantically to escape a predator, which of the following modes of respiration is likely to occur?
i. Cutaneous
ii. Buccal
iii. Pulmonary
1. i, ii, and iii
2. Only ii and iii
3. Only i and ii
4. Only i and iii
Which structure is not related with respiration in frog?
1. Lungs
2. Skin
3. Buccal cavity
4. Diaphragm
Which of the following act(s) as a respiratory organ in a frog on land?
1. Skin
2. Buccal cavity
3. Lungs
4. All of the above
Buccopharyngeal respiration in frog
1. is increased when nostrils are closed
2. Stops when there is pulmonary respiration
3. is increased when it is catching fly
4. stops when mouth is opened.
Adult frog (Rana tigrina) cannot respire through
1. Moist skin
2. Lungs
3. Gills
4. Buccal cavity
1. Diffusion of respiratory gases
2. Absorption of ultraviolet rays to produce vitamin D
3. Storage of excess food in the form of subcutaneous fat
4. Excretion of nitrogenous waste in the form of uric acid
1. Frogs respire on land and in water by the same method
2. In water, skin acts as aquatic respiratory organ (Cutaneous respiration)
3. Dissolved oxygen in water is exchanged through the skin by diffusion
4. On land, the buccal cavity, skin and lungs act as respiratory organs
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