The osculum of a sponge is entirely blocked by a fungal infection. Predict what will happen.
A. Choanocytes will no longer be able to function.
B. Digestion will be prevented from occurring.
C. The flow of water out of the sponge will decrease.
D. Water will be unable to enter the sponge.
Answer: C
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The term heterotroph refers to an organism that
A. uses CO2 for its carbon source. B. must obtain organic compounds for its carbon needs. C. gets energy by oxidizing inorganic compounds. D. does not need a carbon source. E. gets energy from sunlight.
Which of the following foods would have the most fiber?
a. Kidney beans b. English muffins made with enriched flour c. Orange juice d. Corn flakes
In honeybees, if food is closer than 50 m, scouts
A. perform a waggle dance about the food's location. B. perform a round dance about the food's proximity. C. do not return to the food. D. look for other food. E. perform a waggle dance about the food's location and do not return to the food.
The intensity of an electrical impulse is reflected in the
a. frequency of action potentials. b. magnitude of action potentials. c. duration of action potentials. d. intensity of action potentials. e. the frequency and duration of action potentials.