2.2 Animal tissues, organs and organ systems

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Question 30

Medium

An African clawed frog ( $laevis\textit{Xenopus laevis}$ ) is an aquatic amphibian. Like all amphibians, it has a double circulatory system, but its heart contains only one ventricle.

Define the term $system\textit{double circulatory system}$ .

[1]

Explain why having only one ventricle makes the transport of oxygen to body tissues less efficient than having two ventricles.

[2]

Explain why the frog may die if the concentration of dissolved oxygen in the water becomes very low.

[4]

2.2 Animal tissues, organs and organ systems

Question 30

2.2 Animal tissues, organs and organ systems Questions

2.2 Animal tissues, organs and organ systems

Question 30

2.2 Animal tissues, organs and organ systems Questions