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).

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