Biosphere reserves differ from national parks and wildlife sanctuaries in A. Absence of human entry B. People are integral part C. Plants being paid more attention than animals D. Living organisms are brought from all over the world for preservation for posterity
Hint: National parks and wildlife sanctuaries are made in order to protect the animals and biosphere is a global ecosystem which is made up of living organisms.
Complete answer: First of all, you should know what is biosphere, national parks and wildlife sanctuaries only then you can differentiate biosphere from national parks and wildlife sanctuaries. Biosphere is also known as ecosphere which is the region of atmosphere and surface of earth or you can say it is a global ecosystem which is made up of living organisms and the nonliving factors upon which they depend to derive energy and nutrients.
National park is an area which is protected by the government for the preservation of the natural environment and the main purpose is to conserve the rare ecosystems and for the conservation of biodiversity. These parks are often made for the protection of animals. These animals are protected in these parks. People can also go to these parks to experience and to learn from these parks as a part of education.
Wildlife sanctuaries are made in order to protect the endangered species from killing, capturing and poaching them. These are protected from any sort of disturbance. Animals are brought to live here to protect the rest of their lives. The aim is to provide a comfort living to animals. India has beautiful wildlife sanctuaries with dense forests, large rivers.
So now let's look at the given options, > Option A then the biosphere cannot differ in absence of human entry as humans are allowed to have a tour guide or natural experience. So, this option is not the correct one.
> Option B is people are integral part, this one is correct as without people biosphere reserves are incomplete as people play an integral part. There is limited activity of humans in national parks and sanctuaries. So, people are not an integral part of them.
> Option C is Plants being paid more attention than animals. This is also not the correct one as there is no such condition to pay more attention to plants.
> Option D is Living organisms are brought from all over the world for preservation for posterity. This is also not correct as organisms are brought in all three.
Hence, The correct answer is option (B).
Note: People play an integral part in biosphere but in national park and sanctuaries animals play an integral role and without them there is no point of making it as these are made especially for their protection and people do not play that important part as they go to experience the nature as a museum.