Where do internal feeders develop?

Internal feeders develop within the grain, as these pests have a specialized life cycle that requires them to consume the contents of the grain from the inside. This feeding habit allows them to access the starches and nutrients that are vital for their growth and development while providing protection from environmental factors and predators. Internal feeders, such as certain species of beetles and moth larvae, burrow into grains, seeds, or other plant materials, creating tunnels and cavities as they consume the organic matter surrounding them. This behavior distinguishes them from other pests that may feed on the surface or in open environments, which is why the correct answer is the one indicating development occurring within the grain.