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Social Science : Geography
VII. Answer the following in a paragraph:
1. Explain the various components of ecosystem
Components of ecosystem
• Abiotic components
• Biotic components
• Energy component
• The components include the non-living, inorganic, Physical and chemical factors in the environment are "Abiotic Component" Ex. Land, Air, Water, Calcium, Iron.
• The components include plants, animals and micro organisms are ’’Biotic components"
• Producers – Autotrophs are self nourishing components.
• Primary Consumers Herbivores - Ex. Zebra, Goat
Secondary Consumers - Camicores
• Teritary Consumers - Top carnivores
• Decomposers - Saprotrophs (live on died and decaying plants and animals)
• Energy components: - The sun is the ultimate source of energy for the biosphere as a while.
All the organisms use energy to work and convent are form of energy in to another.
2. Write a paragraph on the functions of an ecosystem.
Functions of an ecosystem
• The functioning of an ecosystem depends on the pattern of the energy flow. The living Organisms form and interacting set of flora and fauna which are organised into
• Trophic Levels
• Food Chains
• Food webs.
• Energy flow generally takes place in a hierarchical order through various levels. These are "Trophic Levels".
• Through various trophic levels the chain of transformation of energy from one group of organisms to another is called, a 'Food Chain'.
• A system of interlocking and interdependent food chains is called a "Food Web".
(Trophic level → Food Chain → Food Web)
3. Explain about the aquatic biomes on earth.
• A group of living organisms that live and interest with one another and its aquatic environment for nutrients and shelter is an"Aquatic Biomes”.
• Aquatic biomes are influenced by a series of a biotic factors.
• There are two classification i) Fresh water Biomes, ii) Marine Biomes
Fresh water Biomes
• This comprises Lakes, Ponds, rivers, streams and wetlands.
• Common plants found : Lily, Lotus, duck weeds
• Common animals found: Trout, Salmon, turtles, Crocodiles
• Marine Biomes, the largest biomes on earth, are continuous bodies of salt water and provide a wide range of habitats for marine plants and animals.
• Coral reefs are a second kind of marine biomes.
• Plants such as kelp, algae, Phytoplankton grow in water.
• Humans use aquatic biomes for water, food and leisure activities. Some of the threats and issues : Overfishing, Pollution, rise in the Sea level.
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