Question

Which part of the pond ecosystem does not get affected by the temperature?

• A. Epilimnion
• B. Metalimnion
• C. Hypolimnion
• D. All of the above

Answer 1

The correct option is C Hypolimnion

The warm surface water layer is called as epilimnion, while the colder water layer beneath, which has not been mixed into the epilimnion over the stratification period, is called as hypolimnion.

A sharp temperature gradient (thermocline or metalimnion) forms in the contact zone between both layers.

Epilimnion and atmosphere exchange heat and volatile substances, such as gases.

The epilimnion is recirculated episodically by wind or periods of lower temperatures during the stratification period. On the contrary, the hypolimnion is insulated from an exchange with the atmosphere during the stratification period. Thus, the correct answer is option C.