The changing size ratio between an animal's head and the rest of its body during development is an example of ____
a. allometric growth
b. punctuated equilibrium
c. phyletic gradualism
d. heterochrony
e. paedomorphosis
ANSWER: a
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Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda are all lineages within the phylum
a. Rotifera. b. Mollusca. c. Platyhelminthes. d. Annelida. e. Nemertea.
Annelids possess a(n) ________ skeleton that gains support from internal fluids
a. setae b. cartilaginous c. hydrostatic d. exterior
Coordinating the body's responses to changes to the external environment is primarily the function of the __________ system.
Fill in the blank(s) with the appropriate word(s)