By 250 mya, the seed plants called ____ were our planet’s dominant flora

a. hepatophytes
b. lycophytes
c. bryophytes
d. angiosperms
e. gymnosperms


ANSWER: e

Biology & Microbiology

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Studies of a soybean plant (Glycine max) and the bacterium Bradyrhizobium japonicum have shown that after the

bacterium enters the root, cells of the root cortex begin to divide in response to ____.

a. a flavonoid released by soybean roots b. nod gene products produced by soybean roots c. nod gene products produced by the bacterium d. nitrogen fixation by the bacterium e. a flavonoid produced by the bacterium

Biology & Microbiology

Carriers that shed and transmit pathogens while they are recovering from an infectious disease are called ________ carriers.

A. passive B. convalescent C. asymptomatic D. chronic E. incubation

Biology & Microbiology

The testes are suspended within the sacs called the ____________

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

Biology & Microbiology

N-linked glycosylation attaches a complex carbohydrate onto the

a. free amino group at the amino terminal end of the polypeptide. b. amino group of asparagine. c. amino group of lysine. d. carboxyl group of aspartic acid.

Biology & Microbiology