Which of the following hormones increases when plants are flooded?
A. gibberellin
B. auxin
C. ethylene
D. cytokinin
E. abscisic acid
C. ethylene
A plant that is experiencing flooding will release ethylene, a hormone that suppresses root growth.
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Which of the following is not involved in seed
germination? a. Cold. b. Light. c. Water. d. Abrasion. e. All of these are involved.
Creutzfeldt-Jakob disease is caused by a
1.bacteria. 2.retrovirus. 3.bacteriophage. 4.viroid. 5.prion.
Which stage comes directly after interphase?
A. G1 B. cytokinesis C. S D. mitosis E. G2
What did Darwin conclude from the observation that there are no rabbits in South America?
A. Rabbits were originally found in South America but went extinct. B. Rabbits cannot live in South America because they do not have a good food source. C. Rabbits cannot live in South America because it is too warm. D. Rabbits in South America evolved into guinea pigs and thus are no longer present. E. Rabbits evolved somewhere else and had no means of reaching South America.