Which plant organs are often connected to a petiole, may be either simple or compound, and are typically the main organs of photosynthesis and gas exchange?
a. trichomes
b. flowers
c. stems
d. leaves
Ans: d. leaves
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Explain why enzyme replacement therapy cannot cure a genetic disease, and why gene therapy offers the only cure
What will be an ideal response?
In the tropisms with which it is involved, auxin
causes
a. rapid cell division. b. hardening of cell walls. c. cell elongation. d. increased plasma membrane permeability. e. increased protein synthesis
If the relative fitness value is w = 0.6, what is the selection coefficient used to identify the differences between the fitnesses of organisms with different traits?
What will be an ideal response?
Genetic drift resulting from a disaster that drastically reduces population size is called
A) natural selection. B) gene flow. C) the bottleneck effect. D) the founder effect.