Question

a fish has – chambered heart and it receives – blood only

a) two, oxygenated
b)two, deoxygenated
c)three, oxygenated
d)three, deoxygenated​

Answer 1

Answer:

Does oxygenated and deoxygenated blood mix in fish?

This unidirectional flow of blood produces a gradient of oxygenated to deoxygenated blood around the fish's systemic circuit. ... The heart is three chambered, but the ventricles are partially separated so some mixing of oxygenated and deoxygenated blood occurs, except in crocodilians and birds.

Explanation:

a fish has – chambered heart and it receives – blood only

Fish have a single circuit for blood flow and a two-chambered heart that has only a single atrium and a single ventricle (figure a). ... The blood then continues through the rest of the body before arriving back at the atrium; this is called systemic circulation.

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