Alien species are highly invasive and are a threat to indigenous species. Substantiate this statement with any three examples.
Important Questions on Biodiversity and Conservation
The graph shows the species-area relationship. Answer the following:
(a) Name the naturalist who studied two kinds of relationships shown in the graph. Write the observation made by him.
(b) Write the situation as discovered by ecologist when the value of Z lies between (i) 0.1 and 0.2 (ii) 0.6 and 1.2. What does Z stand for?
(c) When would the slope of line 'B' become steeper?
There are many animals that have become extinct in the wild but continue to be maintained in zoological parks.
(a) What type of biodiversity conservation is observed in this case?
(b) Explain any other two ways which help in this type of conservation.
Since the origin of life on earth, there are five episodes of mass extinction of species.
(a) How is the sixth extinction, presently in progress, different from the previous episodes?
(b) Who is mainly responsible for the sixth extinction?
(c) List any four points that can help overcome this disaster.
Write a short note the Hot spots of biodiversity.
