Which Statement About Gill Circulation in Fishes Is True

question 18

Multiple Choice

Which statement about gill circulation in fishes is true?

• A) Efferent blood vessels bring low-oxygen blood to the gills.
• B) Blood flow during perfusion is bidirectional.
• C) O₂ diffuses from water into blood along the entire length of lamellae due to the high PO₂ gradient between water and blood.
• D) Afferent blood vessels carry high-oxygen blood to the gills.
• E) The direction of blood flow through the lamellae is the same as that of water flowing over the lamellae.

---

Definitions:

Z-scores

Standardized scores indicating how many standard deviations an element is from the mean of its distribution.

P-values

Represent the probability that the observed data would occur by chance under the null hypothesis in statistical tests.

Weight Loss Centre

A facility dedicated to helping individuals lose weight through various means such as diet, exercise, and sometimes medical intervention.

Weight Loss Strategy

A planned approach to reducing a person's body weight, often involving diet, exercise, or behavioral changes.