Biology · Man and His Environment
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"The open water zone away from shore to the depth of affective light penetration and occupied by phylopplankion Iike green algae euglena etc." which of the following regions of fresh water has all these properties?
- A
Littoral
- B
Limnetic
- C
Profundal
- D
Both "a" and "b"
It is the open water zone away from the shore and it extends up to the effective light penetration level. The limnetic zone is well-lighted (like the littoral zone) and is dominated by plankton, both phytoplankton and zooplankton. Plankton are small organisms that play a crucial role in the food chain.
The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. Littoral Zones contain a diversity of plant types that are the habitats for all types of animals: invertebrates, fish, amphibians, reptiles, shorebirds, waterfowl, and mammals. It derives from the Latin noun litus, litoris, meaning "shore".
It is the open water zone away from the shore and it extends up to the effective light penetration level. The limnetic zone is well-lighted (like the littoral zone) and is dominated by plankton, both phytoplankton and zooplankton. Plankton are small organisms that play a crucial role in the food chain.
The profundal zone is a deep zone of an inland body of freestanding water, such as a lake or pond, located below the range of effective light penetration. The profundal zone is chiefly inhabited by primary consumers that are either attached to or crawl along the sediments at the bottom of the lake. Such bottom-dwelling animals are called the benthos. The sediments underlying the profundal zone also support a large population of bacteria and fungi.
Tagged under Biology · Man and His Environment · 2008