Keystone species deserve protection because these
(a) are capable of surviving in harsh envinmental conditions
(b) indicate presence of certain mineral in the soil
(c) have become rare due to over exploitation
(d) play an important role in supporting other species.
Biosphere reserves differ from National Parks and Wildlife sanctuaries because in the former
(a) human beings are not allowed to enter
(b) people are an integral part of the system
(c) plants are paid greater attention than the animals
(d) living organisms are brought from all over the world and preserved for posterity
Beta diversity is diversity
(a) in a community
(b) between communities
(c) in a mountain gradient
(d) on a plain
Which of the following is best method of germplasm conservation ?
(b) Botanical garden
(c) Seed bank
(d) Zoological park
Which one has the largest species variety in India ?
Dust, oolong and brick are varieties of
India is one of the twelve megadiversity countries with ______ of genetic resources of the world.
Which of the following is not an invasive species?
(a) Parthenium hysterophorus
(b) Nelumbo (lotus)
(c) Lantana camara
(d) Eichhornia crassipes
The total number of biodiversity hotspots in the world are
(a) 72 (b) 34 (c) 52 (d) 24.
Which of the following statements is not true?
(a) The biodiversity decreases with increasing altitude.
(b) The biodiversity decreases with increasing pollution.
(c) The fishes show greatest biodiversity among vertebrates.
(d) The biodiversity of bryophytes is greater than that of angiosperms.