1) which of the following groups ofplants contain microphylls?
a. lycophytes
b. pteridophytes
c. bryophytes
d. gymnosperms
e. angiosperms
2) which of the following organisms is not ultimately dependent on the sun as a source
of energy?
a. a night-blooming flower is pollinated by night-flying bats.
b. an underground earthworm avoids the sun.
c. a cave fish feeds on debris that washes down to it.
d. all of the choices are ultimately dependent on the sun.
e. all of the choices are not ultimately dependent on the sun.
3) what was the root cause of the decimation of the kelp beds along the west coast of
the u.s.?
a. over fishing of the perch and herring in the area.
b. a decline in the sea otter population that would control the sea urchin population.
c. an increase in the orca population preying upon the sea otters.
d. an explosion of the sea urchin population.
e. a decline in the seal and sea otter population.
4) _______ is (are) associated with 85% of the cases of threatened and endangered
species.
a. pollution
b. habitat loss
c. overexploitation
d. disease
e. exotic species
5) exocrine glands secrete products onto the surface of the skin and are classified as
_______ tissue.
a. epithelial
b. connective
c. muscle
d. nervous
6) what is most likely to occur when an individual is exposed to uv radiation?
a. the melanocytes will produce melanin, the melanin is distributed into epidermal cells,
a steroid is converted into vitamin d and stem cells can mutate leading to cancer.
b. the melanin will produce melanocytes, the melanocytes are then distributed into
epidermal cells, a steroid is converted into vitamin d and stem cells can mutate leading
to cancer.
c. the melanocytes will produce melanin, the melanin is distributed into dermal cells, a
steroid is converted into vitamin d and stem cells can mutate leading to cancer.
d. the melanocytes will produce melanin, the melanin is distributed into epidermal cells,
vitamin d is converted into a steroidand stem cells can mutate leading to cancer.
7) which type of trait is more valuable in determining the evolutionary relationship
between two organisms?
a. derived
b. ancestral
c. both traits are equally valuable in determining the evolutionary relationship between
two organisms.
d. neither trait is useful in determining the evolutionary relationship between two
organisms.
8) in the logistic growth curve formula, when n is very large, (k-n)/n is almost equal to
0, which results in
a. the population growing as fast as it can, or r(n).
b. the population growth slowing to zero.
c. the population exceeding carrying capacity; more are dying due to starvation than are
born.
d. the population going extinct.
e. you can’t tell without knowing the value of r (rate of reproduction).
9) which of these statements is not true about complement?
a. complement is a complex of plasma proteins that are activated in the presence of
pathogens.
b. complement is required for formation of antigen-antibody complexes.
c. complement forms holes in bacterial membranes and allows fluid and salts to enter a
bacterial cell.
d. complement attracts phagocytes to the bacterial cell and increases its likelihood of
being engulfed.
incorrect
10) which of the following structures is not part of an operon?
a. regulator gene
b. promoter
c. operator
d. structural gene
e. all of these are part of an operon