What defines biochemical pesticides?

Biochemical pesticides are defined by their origin as naturally occurring substances. These pesticides generally include materials that are derived from natural sources, such as plants, animals, or minerals, and they typically function through non-toxic modes of action that target specific pests. This makes them different from synthetic chemicals; biochemical pesticides tend to be more environmentally friendly.

For instance, these substances might include products like pheromones, plant extracts, or substances that can disrupt insect development. Their natural origins often allow for more specific targeting of pests, which can minimize the risks to non-target species and reduce overall environmental impact compared to conventional chemical pesticides.

The other options refer to substances that do not align with this definition. Man-made chemical compounds and inorganic chemicals usually denote synthetic pesticides that are designed and produced through industrial processes, while heavy metals are specific elements that can have toxic effects on various organisms, and they do not fall under the category of biodegradable or specific action biochemical pesticides.