New World monkeys evolved approximately 30 million years ago. These animals are easy to identify because they
A. have flattened noses and prehensile tails.
B. have prehensile tails and hair.
C. have opposable thumbs and protruding noses.
D. have opposable thumbs and binocular vision.
E. have protruding noses and prehensile tails.
Answer: A
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__________ are the specialized reproductive structures of angiosperms. Fill in the blank(s) with the appropriate word(s)
Examining the plants in Figure 18-1, the structure labeled 2 is homologous with structure:
a. 1.
b. 3.
c. 4.
d. 5.
e. 7.
In female gamete development in humans and other vertebrates, the net result of meiosis is the production of one large egg and three small cells with very little cytoplasm. These three small cells:
a. degrade almost immediately. b. fertilize the egg. c. divide to form secondary egg cells. d. fuse together to form the placenta. e. act to nurse the egg cell.
The assembly of proteins in a cell takes place in the
A. nucleus B. vacuoles C. cytoplasm D. mitochondria