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प्रश्न
What is an ecosystem?
उत्तर
- An ecosystem is a community, where all living organisms live and interact with one another and also with their non-living environment such as land, soil, air, water, etc.
- Ecosystems range in size from the smallest units (Eg: bark of a tree) that can sustain life to the global ecosystem or ecosphere. (Eg: Cropland, Pond ecosystem, Forest ecosystem, Desert ecosystem, etc.).
- Biosphere harbors all ecosystems on the earth and sustains life forms including mankind.
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संबंधित प्रश्न
An ecosystem includes ______.
Sahara Desert was formed over a period of time due to one of the following uncontrolled activities of man :
(a) excessive cutting down of forest plants and trees
(b) excessive killing of large herbivores
(c) excessive killing of large carnivores
(d) excessive use of poisonous chemicals herbicides
Where does all the energy in living organisms originate from?
Differentiate between terrestrial and aquatic ecosystem.
Producers are also called autotrophs.
Complete food chain.
Grass → _________ → Frog → ________ → Eagle
Every food chain in the ecosystem begins with ______ which are the original source of food.
Ecosystem originated without human intervention is called ______.
Match the Following:
| 1. | Edaphic factor | a. | Primary consumer |
| 2. | Snails | b. | Non biodegradable |
| 3. | Crow | c. | Decomposers |
| 4. | Earthworms | d. | Oranic matter in soil |
| 5. | Hazardous chemicals | e. | Omnivores |
Define the term:
Net Primary Productivity
