Benthic zone
Benthic zone
Littoral
Littoral
Littoral
The aphotic zone of a lake is typically found at greater depths where sunlight cannot penetrate, usually below the photic zone, which extends to about 200 meters in most cases. This means the deeper parts of the lake, especially areas away from the shore and under the surface, are most likely to be aphotic. In these regions, light levels are insufficient for photosynthesis, resulting in a lack of plant life and limiting the types of organisms that can thrive there.
The deeper parts of a lake, particularly the benthic zone below the photic zone, are more likely to have no photosynthesis. In these areas, light penetration is insufficient for photosynthetic organisms, such as algae and aquatic plants, to thrive. Consequently, the lack of sunlight limits the ability of these organisms to produce energy through photosynthesis, leading to a darker, nutrient-rich environment that relies on decomposition rather than primary production.
limnetic
Plankton lives at the very top of lakes, to get optimal amounts of sunlight.
If you mean up North in the US, you are most likely talking about Lake Superior, on the Northern part of the MIchigan UP, which is the largest TRUE lake in the world. The Caspian Sea is geographically an ocean, and is not freshwater, but saltwater. Jeff
Photosynthesis takes place mainly in the leaves.
mesophyll cells
In the leaves because most of photosynthesis takes place in the leaves and chloroplasts are the seat of photosynthesis.