A gametophyte that develops from a ____ spore is bisexual, meaning that it can produce both sperm and eggs
a. homosporous
b. polysporous
c. heterosporous
d. diplosporous
e. bisporous
ANSWER: a
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The evolution of conducting tubes (sieve tubes) in land plants and brown algae is an example of
A. homoplasy caused by convergence. B. homoplasy caused by common descent. C. homoplasy caused by evolutionary reversal. D. homology caused by convergence. E. homology caused by common descent.
Smooth muscle differs from skeletal muscle in which of the following ways?
A. It lacks actin. B. Calcium is not involved in the contraction mechanism. C. Skeletal muscle cells are smaller. D. It lacks transverse tubules. E. None of the answers provided are correct.
Recommended guidelines for laboratory microbiological precautions should reflect the laboratory's ________.
Fill in the blank(s) with the appropriate word(s).
Answer the question using the accompanying figure. Which graph represents the age span of worker bees primarily
involved in foraging?
a. A b. B c. C d. D e. E