NEET BIOLOGY

Detailed explanation-1: -Photoautotrophs, like plants, use light energy to build sugars out of carbon dioxide. The energy is stored in the chemical bonds of the molecules, which are used as fuel and building material by the plant.

Detailed explanation-2: -3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

Detailed explanation-3: -Only a small fraction of energy reaches photosynthetic organisms. Of that, only 1 to 2 percent of the solar energy is converted to chemical energy. Even with all of the lost energy, Earth’s primary producers produce around 170 billion tons of organic material each year.

Detailed explanation-4: -Photosynthesis. At the base of an ecosystem, primary producers are actively converting solar energy into stored chemical energy. Photosynthesis is the process of converting solar energy, water, and carbon dioxide into carbohydrates and oxygen.

Detailed explanation-5: -Energy generated from dead plants and animals are called bio-fuels.