Question

Which of the following supports a dense population of plankton and littoral vegetation?

• A. Oligotrophic condition
• B. Eutrophic condition
• C. Lithotrophic condition
• D. Agroecotrophic condition

Answer 1

The correct option is B Eutrophic condition

Ponds and lakes are stationary fresh water 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. Therefore, the correct answer is option B.