Energy flow in an ecosystem class 9

Energy Flow The chemical energy of food is the main source of energy required by all living organisms. This energy is transmitted to different trophic levels along the food chain. This energy flow is based on two different laws of thermodynamics: • First law of thermodynamics, that states that energy can neither be created nor destroyed, it can only change from one form to another. • Second law of thermodynamics, that states that as energy is transferred more and more of it is wasted. Energy Flow in Ecosystem The energy flow in the ecosystem is one of the major factors that support the survival of such a great number of organisms. For almost all organisms on earth, the primary source of energy is solar energy. It is amusing to find that we receive less than 50 per cent of the sun’s effective radiation on earth. When we say effective radiation, we mean the radiation, which can be used by plants to carry out photosynthesis. Also Read: Most of the sun’s radiation that falls on the earth is usually reflected back into space by the earth’s atmosphere. This effective radiation is termed as the Photosynthetically Active Radiation (PAR). Overall, we receive about 40 to 50 percent of the energy having Photosynthetically Active Radiation and only around 2-10 percent of it is used by plants for the process of photosynthesis. Thus, this percent of PAR supports the entire world as plants are the producers in the ecosystem and all the other organisms are either directly or in...

Embed Code Embed Code Copied...

Term Meaning Photosynthesis The process by which plants, algae, and other photosynthetic organisms capture energy from sunlight to create organic molecules that can be used as food Cellular respiration The process by which organic molecules from food react chemically with other compounds, releasing energy that is used for essential life processes Producer An organism that produces its own organic food molecules from inorganic sources, typically using energy from the sun Consumer An organism that obtains organic molecules by consuming other organisms as food. Primary consumers eat producers, secondary consumers eat primary consumers, and tertiary consumers eat secondary consumers. Decomposer An organism that obtains energy by breaking down nonliving organic matter, such as discarded plant material, the remains of dead organisms, or animal waste Food web A model that shows how matter and energy are transferred among producers, consumers, and decomposers in an ecosystem Trophic level An organism’s position relative to the primary energy source (such as the sun) in a food chain Ecological pyramid A model that represents the relative amount of matter and energy contained within each trophic level of an ecosystem Energy enters an ecosystem when producers carry out photosynthesis, capturing energy from the sun and storing it as chemical potential energy. During this process, matter from the environment (in the form of C O X 2 \ce C O X 2 ​ and heat), or they can be stored as biom...

Views: 189 Energy Flow in Ecosystem: Energy flow in an ecosystem refers to the transfer of energy from one organism to another as food is consumed. In an ecosystem, energy is passed from the sun to producers (usually plants) through photosynthesis, then from producers to consumers (herbivores) through consumption of plant matter, and from consumers to other consumers (carnivores) through predation. Energy Flow in Ecosystem The flow of energy through an ecosystem is linear, meaning that each time energy is transferred from one organism to another, some of it is lost as heat or other forms of waste. This means that there is always less energy available at higher trophic levels, with top predators having the least amount of energy available to them. It is important to note that energy is not the only thing that flows through an ecosystem. Matter, such as nutrients and minerals, is also cycled through the ecosystem, as decomposers break down dead organic matter and recycle it back into the soil. Understanding the flow of energy and matter in an ecosystem is essential for understanding how ecosystems function and how they respond to disturbances, such as changes in temperature, light, or the introduction of new species. JOIN OUR TELEGRAM CHANNELS Biology Quiz & Notes Physics Quiz & Notes Chemistry Quiz & Notes By Team Telegram Channel Links Official Channel – LearningMantras.com Click Here Biology Quiz & Notes Click Here Physics Quiz & Notes Click Here Chemistry Quiz & Notes Cl...