Name: Bigger Beaks Through Climate Change
Uploaded: 2019-07-19
Duration: 1 min 45 s
Description: This video talks about birds, how they are evolving in response to climate change, and how one species is surprisingly healthy. Let's find out.

Question

Give examples of an animal and plant that can survive in fresh water as well as seawater?

Accepted Answer

Temperature, water, light, soil, etc., are the important physico-chemical factors or abiotic components that interact with different biotic or living components to form different habitats. The availability of water is one of the important factors that affect the distribution of organisms. The productivity and distribution of animals and plants heavily depend on water and its nature (salty or freshwater).

The aquatic organisms that live in oceans, lakes, and rivers, have to get adjusted to the chemical composition and pH of the water. The salinity or the dissolved salt concentration (measured as parts per thousand) determines the distribution of different organisms. Freshwater (lakes, streams, rivers, etc.,) has 5ppt of salinity, seas and oceans have 30-35ppt of salinity, and in hypersaline lagoons, the salinity will be 100ppt.

Some organisms are tolerant to a wide range of salinity and are known as euryhaline and those organisms that are sensitive to salinity are known as stenohaline.

Salmon is a fish and green crab are the two good examples of animals that can live in fresh water, brackish water, or salt water.

Eelgrass, Potamogeton, etc., are the good examples of plants that can live in fresh water, brackish water, or salt water.

Give examples of an animal and plant that can survive in fresh water as well as seawater?

Important Questions on Organisms and Populations

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