In the illustration above showing the haploid phase in the life cycle of a fern, what part represents the male

gametangium?
a. 1
b. 2
c. 3
d. 4
e. 5


ANSWER: e

Biology & Microbiology

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During specimen collection, an important thing to remember when handling a collection device with an oxygen-free atmosphere is to:

a. take care not to tip the container. b. hold the collected specimen in the refri-gerator until processing. c. hold the collected specimen in the incu-bator until processing. d. avoid opening the container in an aerobic atmosphere.

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Which of the following is an exocrine gland

that secretes mucus into semen?

a. prostate b. seminal vesicle c. bulbourethral d. epididymus e. vas deferens

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Solar aquatic systems constructed by biologist John

Todd work with all of the following EXCEPT a. decomposers that degrade waste. b. plants that grow on nutrients released. c. heat from sunlight that speeds degradation. d. an artificial marsh used to filter algae. e. aquatic fish and birds used to finish the process.

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Sulfur has six valence electrons. How many covalent bonds does a sulfur atom typically form?

A. 3 B. 1 C. 5 D. 2 E. 4

Biology & Microbiology