In ______, eggs are fertilized inside the mother, and young are born alive.
a. viviparity
b. ovipary
c. ovoviparity
d. oviparity
a. viviparity
In viviparity, eggs are fertilized inside the mother, and young are born alive.
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The sea squirts and lancelets have an inner chamber that expels water. This chamber is called the
a. intestine. b. bladder. c. atrium. d. nephridium.
Losing an exoskeleton in order to grow is called what?
What will be an ideal response?
The location and/or metabolism of a substance such as a hormone or drug can be followed in the body by labeling the
substance with a(n): a. acid b. isotope c. element d. radioisotope e. DNA molecule
Endospores are
A. resistant to destruction by radiation. B. metabolically inactive. C. living structures. D. resistant to heat and chemical destruction. E. All of these choices are correct.