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Animal Diversity Midterm & Key Form A Sum08

Animal Diversity Midterm & Key Form A Sum08 - BSC...

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BSC 2011-L ANIMAL DIVERSITY MIDTERM EXAM FORM A SUMMER 2008 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Bilateral symmetry in the animal kingdom is best correlated with _____. A) development of a true coelom B) the presence of a skeleton C) an ability to sense equally in all directions D) adaptation to terrestrial environments E) an anterior-posterior body axis 2) Indeterminate cleavage refers to _____. A) the unpredictable formation of either a schizocoelous or enterocoelous body cavity B) the method of formation of an aninal's gut C) a mouth that forms in association with the blastopore D) the ability of a cell isolated from an early embryo to develop into a complete individual E) the spatial arrangement of early embryonic cells undergoing mitotic cell division 3) The distinction between the sponges and other animal phyla is based mainly on the absence versus the presence of _____. A) a complete digestive tract B) mesoderm C) a circulatory system D) true tissues E) a coelom 4) The majority of animal species on earth are _____. 5) Which two main clades branch from the earliest Eumetazoan ancestor? 6) Cephalization is generally associated with all of the following except _____. 7) Numerous paired metanephridia excrete cellular wastes from the body of a _____. A) earthworm B) horsehoe crab C) roundworm D) tapeworm E) trematode 8) In an open circulatory system, _______. 9) Protostomes that are neither coelomate nor pseudocoelomate should, apart from their digestive systems, have bodies that _____.
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Animal Diversity Midterm & Key Form A Sum08 - BSC...

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