Environmental Science - Study Mode

[#256] The formation of __________ is the most characteristic feature in upper course of a river
Correct Answer

(D) waterfalls

Explanation

Solution: The formation of waterfalls is the most characteristic feature in upper course of a river.

[#257] Which among the following is mobile in nature?
Correct Answer

(B) Secondary productivity

Explanation

Solution: Secondary productivity is mobile in nature.

[#258] Infection of HIV is usually detected by which test
Correct Answer

(A) Elisa test

Explanation

Solution: ELISA Test ELISA, which stands for enzyme-linked immunosorbent assay, is used to detect HIV infection. If an ELISA test is positive, the Western blot test is usually administered to confirm the diagnosis.

[#259] Which functional feeding groups are involved in the process of in-stream physical breakdown of coarse material into fine particulate organic matter?
Correct Answer

(B) Shredders

Explanation

Solution: Shredders are involved in the process of in-stream physical breakdown of coarse material into fine particulate organic matter.

[#260] When the air temperature is below freezing, the saturation vapour pressure over water is .
Correct Answer

(C) Greater than the saturation vapour pressure over ice

Explanation

Solution: Saturation vapour pressure increases with rising temperature. Saturation vapour pressure just above liquid water is greater than that over ice. At temperatures below freezing it takes more vapour molecules to saturate air directly above water than it does to saturate air directly above ice.