NEET BIOLOGY

ECOLOGY

ORGANISMS AND THE ENVIRONMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because-
A
a greater number of plant species means that there is less barren land
B
a greater variety of species present allows more organisms to adapt after changesoccur
C
the transition area between two ecosystems is narrower
D
there are fewer species to be affected by environmental stresses
Explanation: 

Detailed explanation-1: -An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because-A) a greater number of plant species means that there is less barren land.

Detailed explanation-2: -The ecosystem that supports a sustainable life i.e. is able to meet the needs of the present population and the future population, without any assistance from outside the ecosystem is known as a sustainable ecosystem. A sustainable ecosystem is a self-sustaining system.

Detailed explanation-3: -The impact of ecosystem destruction are the following: Increased flooding due to the erosion of soil and lack of trees. Rising of the sea levels due to the melting of the glaciers, caused by Global Warming. Disruption of the food chain when the apex predators become extinct.

Detailed explanation-4: -A sustainable ecosystem is one that, over the normal cycle of disturbance events, maintains its characteristic diversity of major functional groups, productivity, and rates of biogeochemical cycling.

Detailed explanation-5: -After a natural disaster, the community will often go through ecological succession and return to the state it was pre-diaster. Healthy ecosystems will bounce back, as natural disasters have occurred on earth for a long time.

There is 1 question to complete.