Brachiopods develop as protostomes, but they show ______ cleavage.
Fill in the blank(s) with the appropriate word(s).
Radial or
radial
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A common application of dry heat in the microbiology laboratory is to
A. prepare specimens for study. B. sterilize media. C. sterilize plastics. D. sterilize the inoculating loop.
In which marine environment would you find the greatest diversity of species?
What will be an ideal response?
The motile feeding stage of a protozoan is called
a. an apicomplexan. b. a gametocyte. c. a cyst. d. a trophozoite.
At the time life first evolved on earth:
a) there was more oxygen and less methane in the atmosphere than there is today. b) there was less oxygen and more methane in the atmosphere than there is today. c) there was less oxygen and less methane in the atmosphere than there is today. d) the amounts of oxygen and methane in the atmosphere were the same as today. e) None of the above is correct.