The term "plankton"
a. refers to a taxonomic division of algae.
b. is a common term for microscopic
organisms that drift or swim weakly in
water.
c. includes only multicellular forms.
d. refers to small aquatic plants.
e. would apply to large brown algae
B
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Overharvesting has primarily threatened which of the following?
a. aquatic species b. tropical forests c. subtropical deserts d. endemic species
During which stage do cells of identical genetic makeup become structurally and functionally different from one another according to the genetically controlled developmental program of the species?
a. cleavage b. cell differentiation c. morphogenesis d. metamorphosis e. ovulation
Kinetic energy is best defined as
A. the energy of position. B. the energy of electrical charge. C. the energy of motion. D. stored energy.
Monocytes leave the marrow via the bloodstream. As they enter tissues, they mature and become
A) granulocytes. B) lymphocytes. C) macrophages. D) neutrophils.