A. 834
B. 483
C. 533
D. 384
Related Mcqs:
- Exotic species, which brought for plantation from some other country to our country or even from one ecosystem to other ecosystem are called, as exotic species like:
A. Pinus nigra – Japan
B. Euralyptus – Australia
C. Polunia – China
D. All of the above - The species characteristics are an expression of the genetic make up of an animal species influencing the extend and nature of ______.
A. Home range, breeding season
B. Longevity, territory and the niche
C. Both (a) & (b)
D. None of these - Rhino has become a threated species on account of over exploitation for its:
A. Skin
B. Bones
C. Horn
D. Tusks - Honey bees collect ectar and pollen from about 500 wild and cultivated plant species including:
A. Trees shrubs, herbs, anhnuals
B. And cultivated crops such as Acacias, Cassias, Eucalypts, Albizzias, Cherries, Dalbergia
C. Both (a) & (b)
D. None of these - The classification of plant groups on the basis of temperature differentiating four zone such as megatherms was proposed by:
A. Clements
B. Raunkiaer
C. Odum
D. Warming - Bonsai is well known over centuries from ______
A. Japan & Malaysia
B. Japan & China
C. China & Malaysia
D. None of these - Which plant has become a troublesome weed in agricultural fields?
A. Cyperus rotundus
B. Eichhornia creassipes
C. Parthenium hysterophorus
D. Chenopodium album - If organisms are arranged according to predator-prey relationship one always finds more of prey species then of predator. This is called a:
A. Food web
B. Pyramid of numbers
C. Succession
D. Predator-prey relationship - The number of species in a single community is described as:
A. Species diversity
B. Alpha diversity
C. Beta diversity
D. Genetic diversity - On the basis of genetic diversity, the following are differentiated with in a species:
A. Ecads
B. Ecotypes
C. Populations
D. Communities
The correct answer to the question: "The approximate number of plant species, according to WCMC, that have become extinct in the last four centuries:" is "384".
