Responses
To allow them to use their diaphragm muscles more effectively, leading them to dry areas.
To allow them to use their diaphragm muscles more effectively, leading them to dry areas.
To enhance their ability to yawn and take in more oxygen, making them prefer high altitudes.
To enhance their ability to yawn and take in more oxygen, making them prefer high altitudes.
To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.
To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.
To improve the function of their throat sacs, leading them to prefer forested areas.
To improve the function of their throat sacs, leading them to prefer forested areas.
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The correct response is:
To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.
Frogs primarily rely on cutaneous respiration, meaning they exchange gases (oxygen and carbon dioxide) through their skin. Moist skin aids in this process, so frogs tend to inhabit areas where they can keep their skin wet, such as near water sources.
The correct response is:
The blood vessels enable direct oxygen uptake and carbon dioxide release through the skin; if their skin dries out, cutaneous respiration would be impaired, affecting their oxygen intake.
Frogs have specialized blood vessels in their skin that facilitate the exchange of gases directly through the skin, a process critical for their respiration. If their skin dries out, this respiratory mechanism would be compromised, potentially leading to insufficient oxygen intake and an accumulation of carbon dioxide, which can be harmful or even fatal for the frogs.
The correct response is:
Both humans and frogs have closed circulatory systems with pulmonary and systemic circulation.
Both species have a closed circulatory system, meaning that blood is contained within vessels, and they also have separate systems for circulating blood to the lungs (pulmonary circulation) and to the rest of the body (systemic circulation). However, it's worth noting that the heart structure differs: humans have a four-chambered heart, while frogs have a three-chambered heart, which leads to some mixing of oxygenated and deoxygenated blood.
The correct response is:
It causes mixing of oxygenated (blood with oxygen in it) and deoxygenated blood (blood without oxygen in it), making it harder for the body to get the oxygen it needs.
In frogs, the presence of only one ventricle means that oxygenated and deoxygenated blood can mix within the heart, leading to less efficient oxygen delivery to the body compared to the complete separation found in the four-chambered hearts of mammals. This mixing can reduce the overall efficiency of oxygen transport in the frog's circulatory system.
The correct response is:
The human heart's four chambers and double circulation probably support higher physical activity levels and greater endurance compared to the frog's three-chambered heart and incomplete double circulation.
The four-chambered heart of humans allows for complete separation of oxygenated and deoxygenated blood, providing more efficient oxygen delivery to tissues, which supports higher levels of physical activity and endurance. In contrast, the frog's three-chambered heart results in some mixing of blood, which is less efficient for sustaining high levels of activity and endurance.
The correct response is:
Humans have more spinal nerves than frogs.
Humans typically have 31 pairs of spinal nerves, while frogs have fewer pairs (usually around 10). This difference reflects the complexity and size of the nervous systems in the two species, with humans having a more complex structure suited for their advanced locomotion and functions.
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