Radially symmetrical animals have a nerve __________. Fill in the blank(s) with the appropriate word(s)
ANSWER: net
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Of the biomes listed, which is best adapted to seasonal fires?
A) Coniferous forests B) Tundra C) Broadleaf forests D) Chaparral
In the section "Investigating Life: Birds Do, Bees Do It", bumblebees pollinated M. lewisii, whereas hummingbirds preferred the red-flowered M. cardinalis. If a hummingbird carries M. cardinalis pollen to M. lewisii, the resulting hybrid offspring are viable. M. lewisii and M. cardinalis are different species because of
A. post-zygotic barriers to reproduction. B. pre-zygotic barriers to reproduction. C. punctuated equilibrium. D. gradualism. E. asexual reproduction.
The substrate in the Mannitol Salt Agar is
A. lactose B. ornitine C. lysine D. mannitol E. sodium chloride
A white blood cell surrounds and engulfs a worn-out red blood cell, forming a vesicle around the red blood cell. This process is called
- phagocytosis. - exocytosis. - pinocytosis. - active transport. - facilitated diffusion.