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प्रश्न
Why are crop fields known as artificial ecosystems?
उत्तर
Artificial ecosystems are ecosystems which are created or maintained by humans. Crop fields are an example of artificial ecosystems because plants grown in fields are selected by humans. Also, humans add chemicals such as manure, pesticides or herbicides in the fields to increase soil nutrients or control the organisms. Since humans manipulate both biotic and abiotic components of the crop fields, these are known as artificial ecosystems.
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संबंधित प्रश्न
Match the items in Column I with as many items as possible in Column II.
| column I | Column II | |
| 1 | Grass | (i) Carnivore |
| 2 | Deer | (ii) Decomposers |
| 3 | cobra | (iii) Primary Consumer |
| 4 | Vulture | (iv) Autotroph |
| 5 | Microbes | (v) Scavenger |
Answer the following question.
Write the different components of a lac-operon in E. coli. Explain its expression while in an ’open’ state.
Annual rainfall in the area of deciduous forest is
Complete the concept map.
Every food chain in the ecosystem begins with ______ which are the original source of food.
The area in which an animal, plant, or microorganisms lives is called its ______.
Decomposers live on dead and decaying plants and animals and are called ______.
Define – Aquarium.
When was the concept of ecosystem services given? By whom was it given?
Describe the functions of the ecosystem.
