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23

Species that can tolerate wide range of salinity are called...........

Explanation

Euryhaline species

Water, another major abiotic component affects the life of organism. The quality of water like pH , salinity (salt concentration) are water related problems faced by aquatic organisms, organisms or species that can tolerate wide range of salinity are regarded as euryhaline Species.

24

Define stenohaline species.

Explanation

Stenohaline species are those species which show a narrow range of salinity tolerance.

25

What is the interaction between two species called?

Explanation

Interaction between two species is called interspecific interaction. These could be beneficial, detrimental or neutral to one of the species or both.

26

What is commensalism?

Explanation

Commensalism is an interaction where one species is benefitted and the other is unaffected. e.g., an orchid growing as an epiphyte on a mango branch.

27

Name the association in which one species produces poisonous substance or a change in environmental conditions that is harmful to another species.

Explanation

Parasitism is the association in which one species produces poisonous substance or a change in environmental conditions that is harmful to another species. Examples are protozoans such as Amoeba and Plasmodium vivax that lives in human body and cause diseases.