An interaction in which one species benefits
and the second species is neither harmed nor
benefited is
a. mutualism.
b. parasitism.
c. commensalism.
d. competition.
e. predation.
C
You might also like to view...
A sudden natural catastrophe resulting in massive die-offs would be categorized as a density-________ limiting factor.
A. autonomous B. independent C. dependent D. reliant
In females, estrogen and progesterone (select all correct choices):
A. direct development of female reproductive structures during embryogenesis. B. direct development of female secondary sexual characteristics during puberty. C. regulate the menstrual cycle and support pregnancy. D. maintain adult health. E. None of these choices are correct.
Which of the following is not true of the Chloroplastida (green algae)?
A. They have chlorophylls a and b. B. They store carbohydrates as starch. C. They are found in fresh and salt water. D. Their cell walls contain chitin.
In the nematode C. elegans, ced-9 prevents apoptosis in a normal cell in which of the following ways?
A) It prevents the caspase activity of ced-3 and ced-4. B) Ced-9 remains inactive until it is signaled by ced-3 and other caspases. C) Ced-9 cleaves to produce ced-3 and ced-4. D) Ced-9 prevents blebbing by its action on the cell membrane.