Environmental Science - Study Mode

[#466] An ecosystem gradually merges with an adjoining one through a transitional zone is called the ______________
Correct Answer

(C) ecotone

Explanation

Solution: An ecotone is a transition area between two biomes. It is where two communities meet and integrate. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems).

[#467] The term "Eco" implies
Correct Answer

(A) Environment

Explanation

Solution: Eco is an abbreviation for ecology, the system of relationships between living things, and with their environment. Friendly implies beneficial, or at least not harmful. It should follow that the term eco-friendly, when added to services or products, indicates positive, or at least not harmful, effects on living things.

[#468] Germ Layer includes
Correct Answer

(B) ectoderm, mesoderm, endoderm

Explanation

Solution: Germ layer, any of three primary cell layers, formed in the earliest stages of embryonic development, consisting of the endoderm (inner layer), the ectoderm (outer layer), and the mesoderm (middle layer).

[#469] Maximum deposition of DDT will occur in
Correct Answer

(D) sea gull

Explanation

Solution: The maximum number of deposition of DDT will occur in phytoplankton crabeelor seagull. DDT is a colourless, odourless and a tasteless crystalline chemical compound, which was originally invented as an insecticide.

[#470] On which date was the Stockholm Conference on Human Environment held?
Correct Answer

(C) June 5th 1972

Explanation

Solution: On June 5th 1972 the Stockholm Conference on Human Environment was held.