Many gardeners use a chemical weed-killer to control plant pests in their gardens. however, many weeds have begun to develop a resistance to these chemical poisons.

the resistance that the weeds have developed may be passed down to future generations through .
a. apoptosis
b. genes
c. mitosis
d. revolution

Ans. (B). Genes.

The chemicals that kill the weeds are known as herbicides. Herbicide-resistance is defined as the inherited ability of weeds to survive an application of herbicide, that can kill a normal weed plant of same species.

The resistance develops due to mutations in genes that were sensitive to those chemicals in wild-type forms. As genes are responsible for transfer of characteristics from one to another generation, the herbicide-resistance is also passed down to generations through genes.

Thus, the correct answer is option (B).

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

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