What is the hallmark trait of aquatic organisms surviving the Permian extinction?
a. They lived in shallow seas.
b. They were exceptionally small.
c. None of them inhabited reefs.
d. They were able to withstand anoxic conditions.
e. All of the above.
D
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During which Period was there lush vegetation, the age of the dinosaurs and the break up of Pangea?
a. Cambrian b. Mesozoic c. Paleozoic d. Jurassic e. Cretaceous
Four of the five answers can be detected by testing the urine. Select the exception
a. ovulation b. pregnancy c. water-soluble drug use d. exposure to pollutants e. white blood cell count
Osmotic pressure is to a plant cell as ___ is to
a ___.
a. air; balloon b. water; water glass c. fire; campfire d. wind; windmill e. dirt; vacuum cleaner
Twins from two individual zygotes (dizygotic twins)
A) are as related genetically as monozygotic twins. B) share no genetic similarities. C) are 100% genetically identical. D) are as related genetically as non-twin siblings.