A snail in your garden and an oyster are quite different in appearance. What would be evidence to justify grouping them together?
A. Both use siphons to obtain oxygen.
B. Both use a radula for feeding.
C. Both have sensory antenna.
D. Both have a mantle capable of secreting calcium carbonate.
Answer: D
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Approximately how many neurons comprise the human brain?
a. 1,000 b. 50,000 c. 100,000 d. 75,000,000 e. 86,000,000,000
Nuclear pores are organized with _______ symmetry.
a. sixfold b. eightfold c. ninefold d. tenfold
What does the concept of neuronal plasticity imply?
A) that the nervous system is composed of a fixed and static group of structures B) that the nervous system can be reorganized or remodeled C) that the nervous system loses functionality as animals age D) that the nervous system of humans is more advanced than those of other animals
What is meant by the term helix-turn-helix (HTH)?
What will be an ideal response?