Question

Choose the right sequence with respect to the stratification in a pond/lake ecosystem

• A. Littoral zone ----- Limnetic zone ----- Profundal zone
• B. Profundal zone ------- limnetic zone ------ littoral zone
• C. Limnetic zone ------- littoral zone ------ Profundal zone
• D. None of the above

Answer 1

The correct option is A Littoral zone ----- Limnetic zone ----- Profundal zone

In aquatic ecosystems like lakes and large ponds organisms are organised in a recognizable structure or pattern in two or three stratas or zones:
1. A littoral zone which has rooted vegetation
2. A limnetic zone of open water containing floating plankton
3. A deep water profundal zone where we find leeches, crabs, some annelid worms and some insect larvae too.