The ecologically fixed and genetically irreversed component of species is called:

Related Mcqs:

1. A population of individuals of a species which are interfertile but differ genetically is called:

   A. Ecad
   B. Ecotone
   C. Ecotype
   D. Biome

2. 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

3. 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

4. A branch of ecology which is concerned with the study of individual species at all stages of its life cycle in relation to environment is called:

   A. Reproductive ecology
   B. Autecology
   C. Synecology
   D. Ecological niche

5. 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

6. The effect of individuals of the same species upon each other is called:

   A. Reaction
   B. Competition
   C. Coaction
   D. Ecesis

7. 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

8. The number of individuals of a species per sampling unit is called its:

   A. Biomass
   B. Abundance
   C. Density
   D. Frequency

9. The amount of living matter present in a component population of a particular trophic level is called:

   A. Standing crop
   B. Standing quality
   C. Both (a) & (b)
   D. Standing state

10. Which of the following species are restricted to a given area?

    A. Endemic
    B. Sibling
    C. Allopatric
    D. Sympatric