Land plants form a ____ clade descended from a common ____ ancestor
a. polyphyletic; green algal
b. polyphyletic; fungal
c. monophyletic; green algal
d. monophyletic; brown algal
e. monophyletic; fungal
ANSWER: c
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In natural communities, some feedback mechanisms operate whenever populations change in size. They are
1.density-dependent factors. 2.density-independent factors. 3.always within the individuals of the community. 4.always outside the individuals of the community. 5.none of the choices
How much of the total body water content is in the intracellular compartment?
What will be an ideal response?
The sequence in the accompanying figure illustrates:a
classical conditioning. b. habituation. c. imprinting. d. insight. e. operant conditioning.
Which of the following statements about the functional groups of organic compounds is false?
A) Functional groups may help make organic compounds hydrophilic. B) Many biological molecules have two or more functional groups. C) Functional groups participate in chemical reactions. D) All functional groups include a carbon atom.