Directions: In the following questions, a statement of assertion (A) ...
Crop fields are man made and some biotic and abiotic components are manipulated by humans. Artificial ecosystems are those ecosystems which are modified and managed by human beings.
Crop fields are man-made, plants do not grow naturally; rather , most of the plants are grown by humans according to the season, type of soil, etc. Crop fields are not like wild forest areas which are left to the care of nature and can sustain themselves.
In crop fields, the land is managed, soil is prepared for sowing seeds, then irrigated and further progress is also kept under observation for getting good yield.
Thus, crop fields are known as artificial ecosystems.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion: Garden is an artificial ecosystem.
Reason: Biotic and abiotic components are manipulated by humans.
The correct answer is option A: Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Explanation:
1. Garden as an Artificial Ecosystem:
- A garden is an example of an artificial ecosystem because it is created and maintained by humans for specific purposes such as growing plants, flowers, or vegetables.
- Unlike natural ecosystems that develop and function on their own, gardens are intentionally designed and modified by humans to suit their needs and preferences.
- In a garden, humans control various aspects such as plant selection, arrangement, watering, fertilization, pest control, and overall maintenance.
2. Manipulation of Biotic and Abiotic Components:
- The reason for considering a garden as an artificial ecosystem is the manipulation of both biotic and abiotic components by humans.
- Biotic components refer to living organisms present in the ecosystem, including plants, animals, insects, and microorganisms.
- In a garden, humans selectively choose and cultivate specific plant species, introduce beneficial insects or animals, and control pests or weeds through various methods.
- Abiotic components include non-living factors such as soil, sunlight, water, temperature, and air quality.
- Humans manipulate these factors in a garden by providing suitable soil conditions, regulating water supply, adjusting sunlight exposure through pruning or shading, and maintaining an optimal microclimate.
3. Human Intervention and Control:
- The key distinction between natural and artificial ecosystems lies in the level of human intervention and control.
- While natural ecosystems evolve and function independently without significant human influence, gardens heavily rely on human management and manipulation.
- Humans play a central role in planning, designing, and maintaining gardens, ensuring the desired aesthetic appeal, productivity, and functionality.
- Without human intervention, gardens would not exist in their current form and would eventually revert to natural processes and succession.
Conclusion:
- The assertion that a garden is an artificial ecosystem is true because it is intentionally created and managed by humans.
- The reason that biotic and abiotic components are manipulated by humans provides a valid explanation for the assertion.
- Therefore, option A is the correct answer.
Directions: In the following questions, a statement of assertion (A) ...
B
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