Abscisic acid enforces dormancy of seeds by

A) waterproofing the seed coat.
B) activating gibberellin.
C) binding to the molecule ATP.
D) preventing endosperm development.
E) preventing the development of the embryo and completion of the lifecycle.


E

Biology & Microbiology

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While lancelets, members of the lineage ____, live mostly buried in the sand in warm, shallow marine habitats, they

do have well-developed segmented muscles and can move.

a. Petromyzontoidea b. Placodermi c. Cephalochordata d. Urochordata e. Myxinoidea

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Which country receives the most sunlight per

year?

a. United States b. Japan c. Canada d. Germany e. Mexico

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The average number of sperm that enter the vagina

during an ejaculation is between a. 150,000 and 350,000. b. 1.5 and 3.5 million. c. 15 and 35 million. d. 150 and 350 million. e. 1.5 and 3.5 billion.

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An organelle found in animals and involved in cell division is the 

A. lysosome. B. mitochondrion. C. Golgi apparatus. D. centriole.  

Biology & Microbiology