Damage to the collar would prevent the sponge from
A. secreting spongin to form the sponge body.
B. circulating water through the sponge.
C. producing gametes for sexual reproduction.
D. extracting organic matter from the water.
Answer: D
You might also like to view...
Which of the following is a location for a cell cycle check point?
a. between G1 and S b. between S and G2 c. between G2 and anaphase d. between prophase and anaphase
A selection coefficient of 1 means zero fitness
Indicate whether the statement is true or false
Steroid hormones usually act via receptors that
a. are coupled to G proteins that activate adenylyl cyclase. b. activate tyrosine kinases. c. bind to DNA. d. activate phospholipase C.
Which of the following is a case of altruism?
A. A plant releases allelopathic chemicals, harming its competitors and itself. B. A prairie dog gives up a foraging opportunity to keep watch for predators. C. A shrimp digs a burrow that it shares with a goby that keeps watch for predators. D. A baby bird aggressively begs, resulting in less food available to its siblings. E. Individuals in a flock of birds are less susceptible to predators than individuals alone.