ECOLOGY
ORGANISMS AND THE ENVIRONMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The native species will become more like the new plant.
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The number of native species will decrease.
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The number of native species will not be affected at all.
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The native species will all become extinct.
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Detailed explanation-1: -A non-native plant is introduced into a diverse, mature ecosystem in equilibrium. Assuming that the non-native plant has no natural enemies and that it thrives in the ecosystem, how will it affect the community? The native species will become more like the new plant.
Detailed explanation-2: -Biodiversity is the key indicator of the health of an ecosystem. A wide variety of species will cope better with threats than a limited number of them in large populations. Even if certain species are affected by pollution, climate change or human activities, the ecosystem as a whole may adapt and survive.
Detailed explanation-3: -Why are ecosystems that undergo secondary succession more likely to reach equilibrium faster than ecosystems that undergo primary succession? The beginning soil quality in an ecosystem undergoing secondary succession allows for pioneer species that generate more biomass.
Detailed explanation-4: -Since some uninhabited land may have thin, poor quality soils with few nutrients, pioneer species are often hardy plants with adaptations such as long roots, root nodes containing nitrogen-fixing bacteria, and leaves that employ transpiration.