Scuba divers use a BCD to control buoyancy. It is essentially a bag that can be inflated or deflated to prevent excessive sinking or floating. How do bony fish accomplish this?

A. They adjust their position using the pectoral and pelvic fins.
B. They adjust the level of gasses in their swim bladder.
C. They pump their operculum.
D. They swim rapidly to saturate the blood with oxygen.


Answer: B

Biology & Microbiology

You might also like to view...

The phenotypic differences between chimps and humans is best explained by _____

a. the high variation in the number of different genes between the two species b. the high number of inversion sequences c. epistatic changes to genes d. patterns of gene expression and regulation e. the large amount of "junk DNA" found in chimpanzee genomes

Biology & Microbiology

Flowers that bloom in early spring versus those that bloom in late summer experience which type of reproductive

isolation?

a. behavioral b. ecological c. gametic d. temporal e. mechanical

Biology & Microbiology

A transport system in which transport of an ion in one direction provides the energy for active

transport in the opposite direction is known as ____.

a. antiport b. active diffusion c. symport d. cotransport e. osmosis

Biology & Microbiology

Which of the following is an overgrowth of cells that serves no useful purpose?

A. oncogene B. tumor C. growth D. proto-oncogene E. callus

Biology & Microbiology