A hemocoel or blood cavity is found in or associated with

A) all animals.
B) sponges.
C) an open circulatory system.
D) acoelomates.
E) cephalopods.


C

Biology & Microbiology

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Clonal selection requires the presence of foreign antigens.

Answer the following statement true (T) or false (F)

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Which type of plant can utilize the Calvin cycle?

A. C4 plants B. C3, C4, and CAM plants C. C3 plants D. CAM plants

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Which of the following covers compact bone and functions in bone repair and growth?

A) diaphysis B) epiphysis C) periosteum D) endosteum

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The two strands of a DNA molecule contain nitrogen bases which are

A. parallel. B. complementary. C. identical. D. proportionate. E. random.

Biology & Microbiology