When an earthworm is underground, which type of receptors will relay information on directional movement?
a. lateral line organs
b. otoliths
c. cristae
d. stereocilia
e. statocysts
e
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Sexual reproduction _____
a. leads to uniform characteristics in a population b. results in new combinations of genetic traits c. requires less tissue differentiation than asexual reproduction d. produces genetic clones e. produces genetic clones and requires less tissue differentiation than asexual reproduction
Traditionally, the _______ were assigned to the basal group called Parazoa
A. jellyfish B. sponges C. flatworms D. roundworms E. ribbon worm
If human gametes were diploid
A. the products of fertilization would have the same number of chromosomes as their parents. B. the products of fertilization would have fewer chromosomes than their parents. C. fertilization could not occur. D. the products of fertilization would have more chromosomes than their parents. E. the embryo would be diploid.
What defines a geological time period known as an era?
A) Location of the continents B) The distinct life forms that were present C) Average global temperature D) The eras represent equal divisions of time