Pollen germination refers to the process of:
A. pollen attachment to the stigma
B. pollen dispersal
C. sperm development
D. double fertilization
E. development of the pollen tube
E. development of the pollen tube
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Researchers are interested in the genomes of prokaryotic species for all of the following reasons EXCEPT
A. bacteria cause many diseases that affect people, plants, and animals. B. bacteria reveal modes of infection. C. bacteria are more highly advanced than humans. D. the origin of the first eukaryotic cell probably involved a union between an archaeal and a bacterial cell. E. All of the choices are reasons for studying genomes of prokaryotic species.
DNA methylation
A. increases transcription. B. inhibits transcription. C. increases crossover events. D. decreases crossover events. E. promotes post-translational modification of proteins.
The majority of evaporation of water occurs ____
a. from oceans b. in the upper atmosphere
c. onto land d. from land plants e. from surface ground water
Refer to the accompanying figure. At what point of this life cycle does fertilization occur?
a. 1
b. 4
c. 6
d. 7
e. 8