Which biome is characterized by plants whose
leaves turn color and drop off in the autumn?
a. coniferous forest
b. tundra
c. temperate deciduous forest
d. tropical rain forest
e. all of these
C
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Regarding the gastric cavity of the cnidarians, which of the following is true?
A. Digestion takes place in the stomach after storage in the gastric cavity. B. Excretion occurs through the same mouth opening through which food enters. C. Digestive enzymes allow the consumption of prey such as fish whole.
The number of animal species now known is about
A. 10 million. B. 100 million. C. 1 million. D. 15 million. E. 5 million.
Most of the creamy flesh of a corn kernel is ____ tissue
a. pollen b. endosperm c. ovary d. carpel e. ovulec
Humans contract bacterial infections such as tuberculosis or syphilis. What is this ecological relationship called?
A) Resource partitioning B) Predation C) Mutualism D) Parasitism E) Competition