When a species produces gametes of different sizes (select all correct choices):
A. the smaller are designated as male and
are called sperm, or spermatozoa.
B. the larger are designated as female and
are called eggs, or ova.
C. the smaller are designated as female and
are called eggs, or ova.
D. the larger are designated as male and are
called sperm, or spermatozoa.
E. None of these choices are correct.
A,B
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Echinoderms exhibit modified ____ symmetry
a. asymmetric b. bilateral c. radial d. triradial
Which of the following result from sperm penetration? (Check all that apply.)
_____ eggs complete meiosis _____ haploid nucleus of egg undergoes final mitotic division _____ movement of egg cytoplasm _____ outer pigmented cap of egg cytoplasm rotates toward point of entry _____ sharp increase in protein synthesis
Functionally, the two most closely associated senses are
a. sight and hearing. b. touch and sight. c. taste and smell. d. temperature and pain. e. touch and balance.
Humans incorporate nitrogen into their bodies
a. by nitrification. b. through ammonification. c. by assimilation and biosynthesis. d. via denitrification. e. by the process of decomposition.