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Most animals have evolved a body cavity; in the coelomates,the cavity is characterized by a
Q7: In humans, the term embryo refers to
Q11: Radial symmetry occurs much less commonly than
Q12: The genetic material used for reproduction by
Q30: The inner membrane of a mitochondrion is
Q48: Cell surface receptors of chemical messages are
Q52: Organisms whose cells lack internal membrane-bound organelles
Q55: Rather than mandibles like most arthropods, spiders
Q56: animal pole<br>A) visible marker of the site
Q57: Mixotrophs show some unusual nutritional strategies; for
Q72: Carbon dioxide is one product of the