DENDROLOGY

Detailed explanation-1: -Green plants use sunlight and carbon dioxide from the atmosphere to produce carbohydrates by the process of photosynthesis. Since, plants produce food for themselves, they are known as producers.

Detailed explanation-2: -Plants are known as producers because they prepare their food themselves by the process of photosynthesis.

Detailed explanation-3: -Final answer: Green plants are also called photoautotrophs.

Detailed explanation-4: -Plants have autotrophic mode of nutrition. So they utilize simple inorganic materials to prepare their own food (glucose) for energy. The raw materials used are carbon dioxide and water. Water results in oxygen production and carbon dioxide is reduced to form the glucose.