Long thin tubular bundle of nervous tissue and support cells
The correct answer is B. Heterotrophs compete from the same food.
Deer is the autotrophs. This is because it gets food from the bear and that dear can make its own food. Bear is the heterotroph it cannot provide food for itself.
It acts as a consumer to deer. Organisms which produces complex organic compounds for example fats, proteins, and carbohydrates from simple substances which are present in the surrounding, are autotrophs.
A Multi-Celled organism has many cells (more than one). Examples would be plants, humans and animals/mammals.
A Single-Celled organism only has one cell that makes up it's entire self. Examples would be bacteria and archaea.
