Which freshwater source is a permanent shallow body of water with plant life throughout? lake pond reservoir wetland

the correct answer is pond

The correct answer is wetland

Reason -

Wetlands are areas in which soil is either permanently or temporarily saturated with water. They are different from lakes and ponds as they are shallow bodies of water. It consists of emergent vegetation, having wetlands plants rooted in soil and their rest portion extends above water surface.  

While Lakes and pond are water bodies with varying area and depth. They do not possess plant life throughout. However , it its top layer  (photic zone), phytoplanktons occur while at the bottom of the lake (aphotic zone), bacteria’s break down dead organic matter.  

Reservoirs are man made structures or a lake is mostly used as a reservoir. Thus it is also not a permanent shallow body of water with plant life throughout

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