Which is NOT an example of a botanical pesticide?

Botanical pesticides are derived from plants and often possess certain biological properties that allow them to act as pesticides. Nicotine, pyrethrum, and rotenone are examples of botanical pesticides, as they are all extracted from naturally occurring plants and are used to control pests based on their toxic or repellent properties.

Nicotine is derived from the tobacco plant and has been used for its insecticidal properties. Pyrethrum is produced from the flowers of chrysanthemum plants, while rotenone is obtained from the seeds of certain tropical plants. These substances illustrate the use of plant compounds in pest management.

On the other hand, carbamate represents a class of synthetic chemicals that mimic the effects of natural pesticides, but it is not derived from plant sources. Carbamates work by inhibiting an enzyme that is crucial for nerve function in insects, a mechanism distinct from those of botanical pesticides. Thus, recognizing carbamate as a synthetic insecticide differentiates it from the others which are truly botanical in origin.