D. Answer the following questions in brief.
1. Define the terms 'food chain' and 'food web.
2. Name the different layers of the forest. 3. Give the meaning of the term 'soil erosion.
4. Name four useful products that are provided to us by the forests.
5. Name any four trees that are common to the Indian sub-continent.
Answers
Answer:
1.Food chain is a chain that is present in the ecosystem.
food web is the connection between the food chain.
2. There are 3 layers. They are canopy, crown and understorey.
3.Soil erosion is a naturally occurring process that affects all landforms.
4.food, fodder, wood, medicine.
5. Indian Mahogany, Ashoka Tree, Gulmohar Tree, Banyan Tree.
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Answer:
1.Food chain is a linear sequence of organisms which starts from producer organisms and ends with decomposer species.
Food web is a connection of multiple food chains
2.Emergent, canopy,under story and forest floor
3. soil erosion is a gradual process of movement and transport of the layer of soil by different agents particularly ,water wind and mass movement
4.Rubber , paper,gum, spices etc...
5.Indian mahogany (swietania Mahogani)
Ashoka Tree(saraca ascoa)
gulmohar Tree(Delonix Regia)
Curry tree(murraya koenigii)