Oxygen-poor blood circulates through
a. A.
b. B.
c. C.
d. D.
e. A, C, and E.
E
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If salt marsh plants are facultative halophytes, then why do they live and dominate in salty areas but not elsewhere?
What will be an ideal response?
A sea squirt uses its ____ for food collection and gas exchange
a. siphon b. pharynx c. tunic d. mantle e. radula
Which is a characteristic of the phylum Chordata?
A. They have a notochord. B. They have a pseudocoelom. C. They do not have true tissues. D. They have a gastrula with only two germ layers.
Maternal inheritance patterns from generation to generation cannot be analyzed by simply studying the X chromosome in the way that paternal inheritance patterns can follow the Y chromosome because
A) the X chromosome is too large to analyze effectively. B) the X chromosome sometimes exchanges genetic information with the Y chromosome. C) the X chromosome is obtained from both the father and the mother. D) one X chromosome is deactivated in females.