The embryonic root, which is where the pollen tube enters the ovule prior to fertilization, is called the

a. suspensor.
b. epicotyl.
c. hypocotyl.
d. radicle.
e. cotyledon.


D

Biology & Microbiology

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The term ________ is used to describe a mutually beneficial association in which the growth of an organism is dependent on one or more growth factors, nutrients, or substrates provided by another organism in the same vicinity.

Fill in the blank(s) with the appropriate word(s).

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What is the end result of Meiosis?

a. 2 diploid nuclei b. 4 diploid nuclei c. 2 haploid nuclei d. 4 haploid nuclei e. Two exact daughter cells

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The constant region of a heavy chain is indicated by

a. A. b. B. c. C. d. D. e. E.

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Design a complete ecosystem that would sustain a number of living organisms for several years in a

sealed container. The only thing that can be added is sunlight. Explain why you have selected each organism. What will be an ideal response?

Biology & Microbiology