Answer: Green slugs can be considered both an autotroph and heterotrophs because they both are able produce their own food from raw materials and energy and they also consume fruits, vegetables, leaves, and other types of plants.
Explanation: The Yellow slug (Limacus flavus) is a greyish green to olive green slug, which may sometimes even have a yellowish brown colour. ... While the slug's body mucus is yellowish in colour, the sole mucus is colourless. Contrary to the adult slugs, the yellow slug's juveniles have a more greenish colour. Slugs will eat any kind of vegetation but prefer tender leaves. This means that particularly tender-leaved plants or seedlings are very vulnerable to slug damage. Slugs will also eat vegetables and fruits, causing unsightly damage to crops.