The effect of red light on plants is to:
a. inactivate phytochrome.
b. convert Pfr to Pr.
c. inhibit germination in some seeds.
d. initiate shade avoidance responses.
e. impact processes in plants that use phytochrome to detect day length.
E
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In male mammals, excretory and reproductive systems share the _____
A) testes B) urethra C) seminal vesicle D) vas deferens E) prostate
True or False: Nothing can be done to alter the impact of future human activity on the environment
A. true B. false
Allelopathy is
A. interference competition. B. the secretion of toxins into the environment by plant roots. C. intraspecific competition. D. the transmission of viruses from deer to rabbits. E. the movement of genes from one species to another.
Fluidity of a membrane depends on the
a. length of the phospholipid fatty acid chains. b. temperature. c. number of double bonds in the fatty acid chains. d. All of the above