Following statements are the characteristics of ''X'' . Read the statements carefully and conclude ''X'' stands for.
I. ''X'' should not show too much variation in productivity from year to year.
II. ''X'' must be either resistant or resilient to occasional disturbances.
III. ''X'' must also be resistant to invasions by alien species.

A : A stable community should show much variation in year to year productivity. R : It must not be resilient to occasional disturbance.

A : A stable community should show much variation in year to year productivity. R : It must not be resilient to occasional disturbance.

Character of a stable community is that it (a) should not show too much variations in year-to-year productivity (b) must be resistant to occasional natural or man-made disturbances (c) should be resistant to invasions by alien species (d) all of these

Character of a stable community is that it (a) should not show too much variations in year-to-year productivity (b) must be resistant to occasional natural or man-made disturbances (c) should be resistant to invasions by alien species (d) all of these

Read the statements regarding a stable community and choose the correct option.I. Must be resistant to occasional disturbances.II.Should show much variation in productivity from year to year.III. Must be resistant to invasions by alien species.

Read the statements regarding a stable community and choose the correct option : (i) Must be resistant to occasional disturbances. (ii) Should show much variation in productivity from year to year. (iii) Must be resistant to invasions by alien species.

Which of the following statement/is /are wrong? I. Communities with more species, generally, tend to de more stable than those with less species. II. A stable community should show too much variation in productivity from year to year. III. The colonisation of tropical pacific Islands by humans is said to have led to the extinction of more than 2,000 species of native birds. IV. The accelerated rates of species extinctions that the world is facing now have nothing to do with human activities. V. The biological wealth of our planet has been declining rapidly and the accusing finger is clearly pointing to human activities .

Write whether the following statements are true or false . (i) Communties with more species tend to be more stable that those with less species. (ii) David Tilman found that plots with less species showed less year-to-year variation in total biomass. (iii) A stable community must be resistant to invasions by ecotic species. (iv) Effect of reduction in diversity has been explained by Alexander von Humboldt through rivet popper hypothesis.