Viral growth in bird embryos can cause discrete, opaque spots in the embryonic membranes called ________.
A. patches
B. cytopathic effects
C. buds
D. pocks
E. plaques
Answer: D
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Indicate whether the statement is true or false
Which of the following statements is NOT true of Chondrichthyans?
A. They have internal fertilization. B. They were the first vertebrates to develop teeth. C. Their buoyance is maintained partly by the oil in their livers. D. They are color blind. E. Their teeth are composed of dentine and enamel whereas the scales are made of chitin.
Which of the following would use an alternation of generation life cycle?
a. fungi b. animals c. plants d. bacteria
Hominids evolved when the climate was
a. wet and hotter. b. wet and cooler. c. dry and hotter. d. dry and cooler. e. none of these.