DENDROLOGY

Detailed explanation-1: -An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers. Plants are the most familiar type of autotroph, but there are many different kinds of autotrophic organisms.

Detailed explanation-2: -Green plants are the only living organisms that produce their own food. Light provides the energy to create a chemical reaction within specialized cells, called chloroplasts, in the leaves. Chlorophyll present in the chloroplasts captures light energy and uses it to produce simple sugars from carbon dioxide and water.

Detailed explanation-3: -Organisms that can not synthesise their own food are called heterotrophs. Heterotrophs depend directly or indirectly on autotrophs for their food. They do not have photosynthetic organelles as autotrophs.

Detailed explanation-4: -Plants, lichens, and algae are examples of autotrophs capable of photosynthesis. Notice their green color due to the high amounts of chlorophyll pigments inside their cells. Synonyms: autophyte; autotrophic organism; primary producer.

Detailed explanation-5: -Plants are called producers because they make – or produce – their own food. Their roots take up water and minerals from the ground and their leaves absorb a gas called carbon dioxide (CO2) from the air. They convert these ingredients into food by using energy from sunlight.