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Biology
Ecosystem
85 questions from 36 papers, each with its answer.
- 85 questions
- 36 papers
- 2.41% of Biology
Nutrient Cycling
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Which one of the following is not a gaseous biogeochemical cycle in ecosystem?Nutrient cycles are of two types: gaseous (reservoir in the atmosphere) and sedimentary (reservoir in the earth's crust).
The phosphorus cycle is sedimentary; its reservoir is rock.
The carbon and nitrogen cycles are gaseous.
Ecological Pyramids
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The upright pyramid of number is absent inIn grassland, pond and lake ecosystems the producers are the most numerous, so the pyramid of numbers is upright.
In a forest (tree) ecosystem a few large trees support many insects and birds, so the pyramid of numbers is not upright.
Food chain
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Identify the possible link "A" in the following food chain: Plant → insect → frog → "A" → EagleA must be a carnivore that eats frogs and is itself eaten by eagles.
A cobra feeds on frogs and is preyed upon by eagles.
Parrot and rabbit are herbivores, and a wolf does not fit between frog and eagle.
Ecosystem structure and function
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Which one of the following is not a functional unit of an ecosystem?The functional aspects of an ecosystem are productivity, decomposition, energy flow and nutrient cycling.
Stratification (vertical distribution of species at different levels) is a structural feature.
That is every question in Ecosystem for this filter.
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