Biodiversity & ...

The legal conversion of land into the status of royal forest refers to:

Which of the following is a major cause of reduction in gene pool?

Which of the following contains chemicals like parthenin, is toxic to cattle and cause pollen allergy in humans?

What is  Eicchornia  called?

The evil quartet described by Jared Diamond doesn ’t include :

Which of the following species had been not recently extinct?  

Which of the following group of animals are more venerable to extinction?

The main cause of diversity loss is the

Loss of biodiversity in a region may leads to
a. Decline in plant production
b. Lowered resistance to environmental perturbations such as drought.
c. Decreased variability in the ecosystem.

Why was the African catfish  Clarias gariepinus  introduced?

Wild animals :
i) Frequently breed in Zoos.
ii) Reproductive capacity is lowered if area of free movement is reduced.

If a species experiences a 90 percent decline over 10 years (or three generations), would be classified as :

Which phenomenon explains that ‘When a species becomes extinct, the plant and animal species also become extinct that are obligatorily associated with the host species ’?

To qualify as a biodiversity hotspot , as per Myers hotspot map:
a) it must contain at least 0.5% or 1,500 species of vascular plants as endemics.
b) it has to have lost at least 70% of its primary vegetation.   

Buffer zone is managed to accommodate variety of resources for restoration of degraded ecosystems and habitats, conservation of genetic resources, species and ecosystem and monitoring of development and conservation programme. It can never extinct species.