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 _____. A) flatworms B) cnidarians C) arthropods D) vertebrates E) annelids 5) Which two main clades branch from the earliest Eumetazoan ancestor? A) Deuterostomia and Ecdysozoa B) Porifera and Radiata C) Cnidaria and Bilateria D) Rotifera and Deuterostomia E) Porifera and Bilateria 6) Cephalization is generally associated with all of the following except _____. A) a longitudinal nerve cord B) bilateral symmetry C) a sessile existence D) concentration of sensory structures at the anterior end E) a ganglion or brain at the anterior end 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, _______. A) blood often escapes from the body B) a heart is absent C) there are no blood vessels D) blood empties from an aorta to bathe body organs E) blood is absent 9) Protostomes that are neither coelomate nor pseudocoelomate should, apart from their digestive systems, have bodies that _____. A) are solid with tissue B) lack mesodermally derived tissues C) lack true tissues D) lack the ability to metabolize food E) are incapable of muscular contraction
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10) The exchange of gases with the environment occurs via ____ in horshoe crabs. A) pedipalps B) malpighian tubules C) book gills D) apodemes E) arthrodial membranes 11) Which of the following functions is an advantage of a fluid-filled body cavity? A) It can facilitate locomotion by responding to contractions of surrounding muscles. B) Internal organs are cushioned and protected from injury. C) The cavity acts as a hydrostatic skeleton.
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This note was uploaded on 07/01/2010 for the course BSC2011L BSC2011L taught by Professor Spears during the Summer '10 term at FSU.

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

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