IB Biology HL B3.2.14 Hl Single Vs Double Circulation Topic Practice

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Study B3.2.14 (HL)—Single vs. double circulation conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

[Maximum number: 1]

The diagrams show blood circulation in a fish and a mammal.

Figure for Question 1 — IB Biology HL
Figure for Question 1 — IB Biology HL

Which two labels represent deoxygenated blood with the lowest pressure in each animal?

A

W and Z

B

X and Y

C

W and Y

D

X and Z

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