Which of the following supports a dense population of plankton and littoral vegetation?
Eutrophic
Lithotrophic
Oligotrophic
Agroecotrophic
A
Agroecotrophic
B
Eutrophic
C
Oligotrophic
D
Lithotrophic
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Solution
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Ponds and lakes are stationary freshwater ecosystems. Ponds are generally shallower with depth less than 2 meters.
Shallow lakes are eutrophic with rich biota and quick circulation of nutrients. Producers in a pond or lake ecosystem include phytoplanktons like diatoms, desmids, Chlorella, Chlamydomonas, Spirogyra, Chlamydomonas, Oedogonium, etc.
Littoral zones occur on the edge of large lakes and rivers, having dense growth of vegetation.
Thus, the correct answer is option B.
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