What do we call plants that have been genetically modified for insect resistance?

The term "Plant-incorporated protectants" (PIPs) refers specifically to plants that have been genetically engineered to express insecticidal traits. This biotechnology typically involves the insertion of genes from other organisms that produce proteins toxic to specific insect pests. As a result, these plants can protect themselves against certain insects without the need for additional chemical insecticides.

The other terms, while related, do not accurately capture the same concept. "Insect-resistant varieties" encompasses a broader range of plants, which may include those developed through traditional breeding methods rather than genetic modification. "Modified plant strains" may refer to any type of genetic alteration, not specifically for insect resistance. "Protective varieties" is a vague term that could pertain to any plant with some form of pest or disease defense, rather than specifically to those engineered with insect-resistance traits. Thus, the precise terminology of Plant-incorporated protectants is what distinguishes this category of genetically modified organisms.