What is an example of a positive form of thigmotropism? a) roots avoiding large rocks in the soil by growing and extending around them
b) roots growing laterally if there is too much resistance to them growing down
grapevine tendrils that coil around objects like stakes or trellises to stabilize
them
d)
mimosa plant folding its leaves when touched in an effort to keep them from
being eaten

Aplant may open end close its stomata to prevent excess water loss and maintain

What is the one part of the nucleotide  that differs among the other different nucle  tides?

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.