The amniotic egg of reptiles, birds, and mammals is an adaptation to
(a) thwart carnivorous predators.
(b) allow life on land.
(c) compensate for the short period of development of the young.
(d) protect the young from the nitrogenous wastes of the mother during embryonic development.
(b) allow life on land.
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Animals store carbohydrates in the form of ____
a. glycogen b. starch c. glucose d. sucrose e. lipids
What adaptations should one expect of the seed coats of angiosperm species whose seeds are dispersed by frugivorous (fruit-eating) animals, as opposed to angiosperm species whose seeds are dispersed by other means?
1. The exterior of the seed coat should have barbs or hooks. 2. The seed coat should contain secondary compounds that irritate the lining of the animal's mouth. 3. The seed coat should be able to withstand low pHs. 4. The seed coat, upon its complete digestion, should provide vitamins or nutrients to animals. 5. The seed coat should be resistant to the animals' digestive enzymes. A) 4 only B) 1 and 2 C) 2 and 3 D) 3 and 5
In small populations, gene frequencies can change drastically by chance alone. This phenomenon is called
A. density-dependent effects. B. migration. C. density-independent effects. D. genetic drift.
What factor sponsors translocation of the bacterial ribosome and what events occur during translocation?
What will be an ideal response?