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Question
Artificial ecosystems like crop fields are characterised by __________ .
Artificial ecosystems like crop fields are characterised by __________ .
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Solution
The correct option is A high productivity
An artificial ecosystem is a man made system of plants, animals, and people living in an area together with their surroundings. Examples include crop fields.
The amount of production and output from these crop fields are quite high with the inputs like manures, fertilisers and good quality seeds. The weeds in these fields are removed and the crops are taken care of for proper productivity. Water availability is regularly checked and provided with a suitable amount of water. Hence option a is correct.
These artificial ecosystems like crop fields are not very diversified like tropical rain forests and are also not self sustainable. As they require inputs like fertilizers, pesticides and water from outside. So option b is incorrect.
Moreover, addition of chemicals to remove insects and adding nutrients kill beneficial organisms like decomposers thereby it reduces nutrient cycling. So option d is incorrect.
They are not made of complex food chains or food webs. A simple food chain with producers (like crops) is grown with the idea of high production along with few consumers like hen, ducks, cattle for meat or egg. Hence option c is incorrect.
An artificial ecosystem is a man made system of plants, animals, and people living in an area together with their surroundings. Examples include crop fields.
The amount of production and output from these crop fields are quite high with the inputs like manures, fertilisers and good quality seeds. The weeds in these fields are removed and the crops are taken care of for proper productivity. Water availability is regularly checked and provided with a suitable amount of water. Hence option a is correct.
These artificial ecosystems like crop fields are not very diversified like tropical rain forests and are also not self sustainable. As they require inputs like fertilizers, pesticides and water from outside. So option b is incorrect.
Moreover, addition of chemicals to remove insects and adding nutrients kill beneficial organisms like decomposers thereby it reduces nutrient cycling. So option d is incorrect.
They are not made of complex food chains or food webs. A simple food chain with producers (like crops) is grown with the idea of high production along with few consumers like hen, ducks, cattle for meat or egg. Hence option c is incorrect.
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