Question

question 28
gmo crop plants are made resistant to insect pests by
coating the plant with a bt gel that acts as a barrier
injecting mrna for a protein into the roots of a plant
harvesting the bt bacterium with the crops so that the bt toxin is always present
inserting the bt protein gene into the plants genome
this is impossible to create
selected species
allens
transgenic

Explanation:

Genetically modified organisms (GMOs) are created by inserting foreign genes into an organism's genome. In the case of GMO crop plants made resistant to insect pests, the Bt (Bacillus thuringiensis) protein gene is inserted into the plant's genome. This gene codes for a protein that is toxic to certain insect pests. When the plant expresses this gene, it produces the Bt protein, which protects it from insect damage. Harvesting the Bt bacterium with the crops would not make the plants resistant as it's about the genetic incorporation. Injecting mRNA is not the standard way for stable genetic modification in plants for such traits. Coating the plant with a gel is a physical barrier method, not genetic modification.

Answer:

Inserting the Bt protein gene into the plants genome.