A. Man
B. Parasites
C. Predators
D. Available food
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 - Individuals of the same species in a particular locality constitute:
A. Population
B. Community
C. Flora
D. Fauna - In a comparative study of grassland ecosystem and pond ecosystem it may be observed that:
A. Primary and secondary consumers are similar
B. Both biotic and abiotic components are different
C. The biotic components are almost similar
D. The abiotic components are almost similar - Niche of a species in an ecosystem refers to its:
A. Place of occurrence
B. Competitive ability
C. Centre of origin
D. Function at its place of occurrence - A population of individuals of a species which are interfertile but differ genetically is called:
A. Ecad
B. Ecotone
C. Ecotype
D. Biome - The effect of individuals of the same species upon each other is called:
A. Reaction
B. Competition
C. Coaction
D. Ecesis - The number of individuals of a species per sampling unit is called its:
A. Biomass
B. Abundance
C. Density
D. Frequency - 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 - The number of sampling units expressed in percentage in which a particular species occurs is called its:
A. Abundance
B. Density
C. Frequency
D. Phenology - Which of the following species are restricted to a given area?
A. Endemic
B. Sibling
C. Allopatric
D. Sympatric
The correct answer to the question: "The number of individuals of a species in a particular ecosystem at a given constant due to:" is "Available food".
