ANIMAL PHYSIOLOGY
EXCRETION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Carbon dioxide and oxygen both diffuse out of the frog.
|
|
|
Carbon dioxide and oxygen both diffuse into the frog.
|
|
|
Oxygen diffuses out of the frog, and carbon dioxide diffuses into the frog.
|
|
|
Carbon dioxide diffuses out of the frog, and oxygen diffuses into the frog.
|
Detailed explanation-1: -A frog’s skin is permeable to oxygen and carbon dioxide. When a frog is swimming in pond water, which direction with oxygen and carbon dioxide diffuse? Carbon dioxide and oxygen both diffuse out of the frog.
Detailed explanation-2: -Figure 3: Oxygen diffuses out of the capillary and into cells, whereas carbon dioxide diffuses out of cells and into the capillary.
Detailed explanation-3: -The thin membranous skin is allows the respiratory gases to readily diffuse directly down their gradients between the blood vessels and the surroundings. When the frog is out of the water, mucus glands in the skin keep the frog moist, which helps absorb dissolved oxygen from the air.
Detailed explanation-4: -Frogs are amphibians. They breathe through their moist skin in water. But, on land, they breathe through their lungs, .
Detailed explanation-5: -Most amphibians breathe through lungs and their skin. Their skin has to stay wet in order for them to absorb oxygen so they secrete mucous to keep their skin moist. Oxygen absorbed through their skin will enter blood vessels right at the skin surface that will circulate the oxygen to the rest of the body.