The phylum Nematoda includes which of the following very common organisms, some of which are parasitic and most of which are often found in soil?

A) Flatworms
B) Earthworms
C) Segmented worms
D) Roundworms
E) Tapeworms


D

Biology & Microbiology

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The Z scheme refers to __________

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Early symptoms of schizophrenia affect

A) thinking. B) hearing. C) vision. D) aggression.

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The term that refers to the presence of flagella all over the cell surface is ________.

A. atrichous B. monotrichous C. lophotrichous D. peritrichous E. amphitrichous

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The only known population of a reptile species lives on an African mountain. The population is relatively large, but no close relatives of this species are known. Suppose you could stop all mutations within the population and all emigration out of this

population. Which statement best describes the probable future of this population? A) The population will decline and become extinct after a few generations because of excessive inbreeding. B) Genetic drift will cause major evolutionary changes in the population. C) Evolution will continue as natural selection acts on the genetic variability that exists in the population. D) Although the population will cease to change, it may survive for as long as the environment remains constant.

Biology & Microbiology