The compensation depth refers to:
a. the depth at which seaweed growth compensates for grazers.
b. always 3 times the secchi disk depth.
c. the depth which provides only enough light for photosynthesis but not growth.
d. the depth where competition excludes a species.
e. the depth at which phytoplankton dissolve.
C
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A digestive tube is best defined as ________
A) the compartment in which an animal digests its food B) a tube-shaped digestive compartment with either one or two openings C) a tube-shaped digestive compartment that has two openings and through which food moves in one direction D) a digestive compartment that conducts both chemical and mechanical digestion
The most complex type of learning that also uses previous experience to solve a problem is
A. imprinting. B. conditioned response. C. insight. D. instinctive.
Some prokaryotes attach to other substrates by hairlike outgrowths, which are shorter than flagella. These are called
A. fission products. B. endospores. C. plasmids. D. pili. E. flagellin.
The antibodies that can bind to large parasites are
A) IgG. B) IgM. C) IgA. D) IgD. E) IgE.