Oak, maple, and beech trees lose their leaves each year. These organisms typically are found in which biome?
a) boreal forest
b) deciduous forest
c) grassland
d) tundra
Ans: b) deciduous forest
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Answer the following statements true (T) or false (F)
1. There are no parasitic crustaceans. 2. Each arm of the starfish differs internally, one being specialized for reproduction, another for respiration, a third for digestion, a fourth for the water vascular system, and the fifth for the nervous and circulatory systems. 3. Autotomy is the ability of an animal to lose a body part and subsequently regenerate it. 4. Echinoderms have an exoskeleton.
In an organism with either a closed or open circulatory system, most of the body fluids are in the
A. intracellular fluid. B. extracellular fluid. C. interstitial fluid. D. plasma. E. hemolymph.
If a DNA sequence is altered from TAGCTGA to TAGTGA, what kind of mutation has occurred? View Available Hint(s) If a DNA sequence is altered from TAGCTGA to TAGTGA, what kind of mutation has occurred?
a. None. b. Addition. c. Both addition and deletion. d. Deletion.
From which chamber of the heart does the right ventricle receive blood?
a. right atrium. b. left atrium. c. left ventricle. d. none of the above.