ECOLOGY
ECOSYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The population will grow bigger
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The population will all die
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The population will have to move away or they will die
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The population will sit and wait for new resources
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Detailed explanation-1: -When necessary resources, such as food, decrease, some individuals will die. Overall, the population cannot reproduce at the same rate, so the birth rates drop. This will cause the population growth rate to decrease.
Detailed explanation-2: -If an organism, group or population does not have enough resources to sustain it, individuals will die through starvation, desiccation and stress, or they will fail to produce offspring. In the case of photosynthesizing organisms such as plants, light is a vitally important limiting factor, essential for their growth.
Detailed explanation-3: -Populations with unlimited resources grow exponentially, with an accelerating growth rate. When resources become limiting, populations follow a logistic growth curve. The population of a species will level off at the carrying capacity of its environment.
Detailed explanation-4: -Carrying Capacity If a population is small and resources are plentiful, a population may grow quickly. But over time, because of limiting factors, population growth tends to slow and then stop. The population has reached the “carrying capacity” of the ecosystem.
Detailed explanation-5: -Competition within the population. When a population reaches a high density, there are more individuals trying to use the same quantity of resources. This can lead to competition for food, water, shelter, mates, light, and other resources needed for survival and reproduction.