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With reference to ecosystem stability, consider the following statements:
1. A diverse and complex ecosystem is more stable.
2. Ecosystem stability increases with decrease in number of links in food web.
Q. Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2 ​
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
With reference to ecosystem stability, consider the following statemen...
Diversity increases the resilience of the system to outside invasions of exotic organisms. So statement 1 is correct. A large number of interacting feeding links provide alternative channels for energy flow and this generates a wide variety of adjustments of population to environment changes and stresses within the ecosystem. Therefore, ecosystem stability increases with INCREASE in number of links in food web.
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Most Upvoted Answer
With reference to ecosystem stability, consider the following statemen...
Explanation:

Diverse and Complex Ecosystem:
- Statement 1 is correct. A diverse and complex ecosystem is more stable because it has a wider range of species interactions and relationships.
- Biodiversity helps in buffering the ecosystem against disturbances and ensures that if one species declines, others can step in to maintain the balance.
- Complex ecosystems also have more redundant pathways and interactions, which can compensate for the loss of certain species or links.

Decrease in Number of Links in Food Web:
- Statement 2 is incorrect. Ecosystem stability does not increase with a decrease in the number of links in the food web.
- A simplified food web with fewer links can make the ecosystem more vulnerable to disruptions.
- The loss of a key species or link in a simplified food web can have cascading effects, leading to imbalances and instability in the ecosystem.
Therefore, the correct answer is option 'A' - 1 only. A diverse and complex ecosystem is more stable, while ecosystem stability does not increase with a decrease in the number of links in the food web.
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Ecosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, pollination, climate regulation, spiritual fulfilment and aesthetic enjoyment, to name just a few. Most of these benefits either are irreplaceable or the technology necessary to replace them is prohibitively expensive. For example, potable fresh water can be provided by desalinating sea-water, but only at great cost. The rapidly expanding human population has greatly modified the Earths ecosystems to meet their increased requirements of some of the goods and services, particularly food, fresh water, timber, fibre and fuel. These modifications have contributed substantially to human well being and economic development. The benefits have notbeen equally distributed. Some people have actually been harmed by these changes. Moreover, short-term increases in some ecosystem goods and services have come at the cost of the long-term degradation of others. For example, efforts to increase the production of food and fibre have decreased the ability of some ecosystems to provide clean water, regulate flooding and support biodiversity.Q. With reference to the passage, consider the following statements:1. It is imperative to modify the Earths ecosystems for the well being of mankind. 2. Technology can never replace all the goods and services provided by ecosystems. Which of the statements given above is/are correct ?

Directions for the following 6 (six) items:Read each of the following two passages and answer the items that follow. Your answers to these items should be based on the passages only.Passage-1Ecosystems provide people with a variety of goods and services; food, clean water, clean air, flood control, soil stabilization, pollination, climate regulation, spiritual fulfilment and aesthetic enjoyment, to name just a few. Most of these benefits either are irreplaceable or the technology necessary to replace them is prohibitively expensive. For example, potable fresh water can be provided by desalinating sea-water, but only at great cost. The rapidly expanding human population has greatly modified the Earths ecosystems to meet their increased requirements of some of the goods and services, particularly food, fresh water, timber, fibre and fuel. These modifications have contributed substantially to human well being and economic development. The benefits have notbeen equally distributed. Some people have actually been harmed by these changes. Moreover, short-term increases in some ecosystem goods and services have come at the cost of the long-term degradation of others. For example, efforts to increase the production of food and fibre have decreased the ability of some ecosystems to provide clean water, regulate flooding and support biodiversity.Q. With reference to the passage, consider the following statements. Expanding humans population has an adverse effect on:1. Spiritual fulfilment 2. Aesthetic enjoyment 3. Potable fresh water 4. Production of food and fibre 5. BiodiversityWhich of the statements given above are correct ?

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With reference to ecosystem stability, consider the following statements:1. A diverse and complex ecosystem is more stable.2. Ecosystem stability increases with decrease in number of links in food web.Q. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2 ​Correct answer is option 'A'. Can you explain this answer?
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