4. Marine Biology

Fish Biology — Quiz

Test your understanding of fish biology with 5 practice questions.

Practice Questions

Question 1

Allometric scaling of metabolic rate in fish is described by the equation $MR = aM^b$, where $MR$ is metabolic rate, $M$ is body mass, and $b=0.75$. If Fish A weighs $100\,\mathrm{g}$ and Fish B weighs $800\,\mathrm{g}$, approximately how many times greater is the metabolic rate of Fish B compared to Fish A?

Question 2

Which adaptation allows deep-sea fish to maintain neutral buoyancy without a swim bladder?

Question 3

Which reproductive mode is characterized by fish possessing both functional ovaries and testes simultaneously?

Question 4

In fisheries ecology, if a fish population has biomass $B=500\,\mathrm{t}$ and a production-to-biomass ratio $(P/B)$ of $0.3\,\mathrm{yr^{-1}}$, what is the annual production $P$ in tonnes?

Question 5

What swimming mode do many fish use for rapid escape responses, involving a sudden burst of speed followed by coasting?