Headwater streams depend primarily on __________ as an energy input
a. photosynthesis
b. detritus
c. phytoplankton
d. zooplankton
e. nekton
B
You might also like to view...
Free energy change is related to the equilibrium constant for a specific reaction.
Answer the following statement(s) true (T) or false (F)
A gram-negative, spiral-shaped organism is isolated from a stool sample that was hippu-rate-positive, catalase-positive, susceptible to nalidixic acid, and resistant to cephalothin. The organism can be identified as:
a. Campylobacter coli. b. C. jejuni subsp. doylei. c. C. jejuni subsp. jejuni. d. C. fetus subsp. fetus.
Which one of the following traits would be found in a typical fern but not a moss?
A. homospory B. tracheids C. gametophytes with rhizoids D. antheridia E. a sporophyte generation
Which of the following describes a trophoblast?
a. the outer layer of blastocyst cells b. a combination of Z and W chromosomes c. the inner layer of blastocyst cells d. a fertilized egg retained in the female