Question

Which of these zones belong to the photic zone of a freshwater ecosystem?

• A. Profundal and limnetic
• B. Limnetic and littoral
• C. Littoral and profundal
• D. Bathyal and abyssal

Answer 1

The correct option is B Limnetic and littoral

The freshwater ecosystem is broadly divided into three zones based on light penetration. The littoral zone, also known as the shallow zone is the area near the shore. The littoral zone is followed by the limnetic zone that receives ample light from the sun. Both, limnetic and littoral zone constitute the photic zone of a freshwater ecosystem. Next to the limnetic zone, is the profundal zone which is very cold and dimly lit.