EVERYDAY SCIENCE

Detailed explanation-1: -Autotroph is an organism which produces complex compounds from simple substances, generally using sunlight and the process is called photosynthesis or chemosynthesis. Autotrophic organisms do not need any living source of carbon and these are the producers in the food chain. Examples of autotrophs are algae and plants.

Detailed explanation-2: -Algae, along with plants and some bacteria and fungi, are autotrophs. Autotrophs are the producers in the food chain, meaning they create their own nutrients and energy. Kelp, like most autotrophs, creates energy through a process called photosynthesis.

Detailed explanation-3: -Only certain organisms, called autotrophs, can perform photosynthesis; they require the presence of chlorophyll, a specialized pigment that can absorb light and convert light energy into chemical energy.

Detailed explanation-4: -Most life on Earth depends on photosynthesis. The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar).

Detailed explanation-5: -No, although most autotrophs use sunlight as the energy source to produce food, other autotrophs produce their food without the aid of sunlight. The alternative food production process is called chemosynthesis and relies on the oxidation of inorganic compounds to produce food.