Adult frog (Rana tigrina) cannot respire through

1. Moist skin

2. Lungs

3. Gills

4. Buccal cavity

In frog, oxygen dissolved in water can be taken by

1. External nares

2. Spiracles

3. Buccal cavity

4. Skin

During aestivation and hibernation, frog respires by:

1. Lungs

2. Skin

3. Buccal mucosa

4. All of these

Regarding respiration in frogs:

I. The skin of a frog is permeable to oxygen and carbon dioxide, as well as to water.
II. When a frog is underwater, oxygen is transmitted through the skin directly into the bloodstream.
III. On land, adult frogs use their lungs to breathe

The correct statements are:

1. I, II, III
2. I and II
3. I and III
4. II and III

Gas exchange between the air and blood stream occurs in three locations in the frog:

(1) the skin
(2) the lining of the mouth
(3) the lungs

1. (1) and (2)
2. (1) and (3)
3. (2) and (3)
4. (1), (2) and (3)

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

Which structure is not related with respiration in frog?

1. Lungs

2. Skin

3. Buccal cavity

4. Diaphragm

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

In water, frogs respire through
(A)Skin
(B)lungs
(C)buccal cavity
(D)All of these