ecology & bio environment geography section 2 MCQ Questions & Answers Detailed Explanation

Answer: (b)

Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type. Species found in such restricted geographical area are called endemic species.

Answer: (d)

Although tropical forests cover less than 7% of the earth’s surface they are home to approximately 50% of all living things on earth.

Answer: (b)

An ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete. Natural ecosystem.

It is an ecosystem developed under natural conditions without any appreciable human interference. A natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., freshwater, lake, pond, river, sea). Oceans constitute the most stable ecosystem.

Answer: (a)

An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.

Answer: (a)

The Montreal Protocol on Substances that Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances believed to be responsible for ozone depletion.

The treaty was opened for signature on September 16, 1987, and entered into force on January 1, 1989, followed by the first meeting in Helsinki, May 1989.