Which animal has a gastrovascular cavity?
A. animals, such as fish
B. flatworms, such as Planaria
C. mollusks, such as clams
D. insects, like the fly
Answer: B
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Using a biological or scientific dictionary, or a reference in your textbook, determine the meaning of the root word psilo, and relate it to the appearance of Psilotum.
What will be an ideal response?
Which group is most closely related to fungi?
a. radiolarians b. stramenopiles c. alveolates d. choanoflagellates e. oomycetes
Today the term "algae" is used primarily for
organisms in the group(s) a. bacteria. b. protista. c. plantae. d. bacteria and protista only. e. bacteria, protista, and plantae
Refer to the accompanying figure. A population that produces a large number of offspring, but the offspring must
survive independently, would be represented by the curve labeled:a. A b. B c. C d. either A or B. e. either A, B, or C.