What environmental challenge is posed to young plants by an old growth forest?
A. high temperatures
B. thick leaf litter
C. low light
D. low humidity
Answer: C
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Which of the following morphologies are seen among the Chloroplastida?
A. Filamentous B. Colonial C. Sheet-like D. Unicellular E. All of the choices are correct.
The mature body form of the sporophyte of a typical ____ has fronds growing from a rhizome, with
sori on the lower surface or margins of some of the fronds.
a. moss b. whisk fern c. fern d. club moss e. horsetail
Areas of the body such as the lips or fingers are represented by ____ regions and arms and legs are
represented by relatively _____ regions.
a. large; small b. small; large c. motor; sensory d. sensory; motor e. cerebellum; brain stem
How do striated and smooth muscles differ?
A) Striated muscle is involuntary, but smooth muscle is voluntary. B) Striated muscle has a banding pattern under the microscope, but smooth muscle doesn't. C) Striated muscle can contract for a long period, but smooth muscle contracts very briefly. D) Striated muscle cells have nuclei, but smooth muscle cells do not.