Question:

Which of these include onlyautotrophs?

Updated On: Jul 27, 2022

Producers
Consumers
Scavangers
Carnivores

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The Correct Option is A

Solution and Explanation

Autotrophic nutrition is a mode of nutrition in which organism build up their own organic substances from inorganic raw materials, i.e., they synthesise their own food with the help of chlorophyll. The organisms performing autotrophic nutrition are called autotrophs. Autotrophs require a source of energy for building organic substances. Most of the autotrophs use solar radiations and are hence called photoautotrophs. A few autotrophic bacteria obtain chemical energy by performing exergonic reactions. They are known as chemoautotrophs. As autotrophs are able to produce organic food, thus they are called producers. Autotrophs, mainly photoautotrophs, play an important role in ecosystem.

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Notes on energy flow through ecosystems

Concepts Used:

Energy Flow through Ecosystems

The energy flow in the ecosystem is one of the major factors that support the survival of such a large number of organisms. For almost all lifeforms on earth, solar energy is the primary source of energy. It is entertaining to find that we receive less than 50 % of the sun’s effective radiation on the earth. When we say effective radiation, we mean the radiation, which can be utilized by plants to carry out photosynthesis.

The energy flow takes place throughout the food chain and food web. During the process of energy flow in the ecosystem, plants being the producers absorb sunlight with the help of the chloroplasts and a part of it is converted into chemical energy in the process of photosynthesis. This energy is stored in different organic products in the plants and passed on to the primary consumers in the food chain when the herbivores consume the plants as food. Then followed by the secondary consumers. Finally, when tertiary consumers consume the carnivores, energy will again be degraded. Thus, the energy flow is unidirectional in nature.