ecology & bio environment geography section 2 Practice Questions Answers Test with Solutions & More Shortcuts

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: (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)

Ecological balance is a state of dynamic equilibrium within a community of organisms in which genetic, species and ecosystem diversity remain relatively stable, subject to gradual changes through natural succession.'

In other words, it refers to a stable balance in the numbers of each species in an ecosystem. So to maintain this balance, the delicate balance between the organisms constituting an ecosystem should be understood.

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.