Most of the phyla of the animal kingdom are of animals that occur
A. in the sky.
B. on land.
C. in freshwater habitats.
D. in the ocean.
Answer: D
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The nearest living relatives of alligators and crocodiles are:
A. snakes B. birds C. turtles D. lizards E. manatees
The Protenor mode of sex determination is the ________
A) XO/YY scheme B) XX/XO scheme C) hermaphroditic scheme D) scheme based on F plasmids inserted into the FMR-1 gene E) scheme based on single translocations in the X chromosome
In a species that has five different alleles for a gene at a particular locus, how many different alleles may be present in the somatic cells of one diploid individual?
(A) One (B) Two (C) Three (D) Four
Cellulose is ____.
A. a polysaccharide found in cell walls of plants B. a component of cell membranes C. an oligosaccharide found in animals D. formed by hydrolysis of monosaccharides E. a component of invertebrate exoskeletons