Organisms and Populations||Ecological Abiotic Factors 3. Water ||4.Humidity ||5.Atmosphere Transition Zone(Ecotone) || Edge Effect and Edge species

Organisms and Populations||Edaphic Factors|| Responses to Abiotic Factors || Regulate || Conform ||3Migrate ||Suspend

Organisms and Populations :Ecology, Ecological Hierarchy, Levels OF Biological Organisations, Biomes, Major Abiotic Factors, Responses to Abiotic Factors, Adaptations Population and Population Attributes Growth Models Age Pyramids

S1: Ecology, history and geography determine the distribution of organisms. S6: Others prefer to interpret bio geographical history through vicariance (range-splitting) events. P: Some historical biogeographers are interested in finding centre of-origins. Q: Most species distributions result from a combination of all these factors. R : But biogeographers tend to specialise in ecological aspects (ecological biography or historical aspects). S: Ecological biogeographers are interested in the effects of environmental factors. The correct sequence should be

Which of the following is correct i. In a population birth rate and death rate refer to per capita births and death respectively II. In nuature, we rerely find isolated single individuals of species III. The size of population for any species is stable IV. Ecological effects of any factors on a population growth are generally reflected in its size / population density

Assertion : The community of an ecotone commonly contains the organisms of each of the overlapping communities and in addition the organisms which are restricted to the ecotone. Reason : The tendency for increased variety and density at community junctions is known as the edge effect.

Which of the following are correct ? I. Population is group of individual organisms of the same species in a given area. II. An ecotype is a population of inidividuals of a species, which are genetically different. III. Environment is influnced by many biotic and abiotic factors. IV. Ecade is a place, where and organism lives.

The variability among living organisms from all sources including terrestrial, marine and other ecosystems and the ecological complexes of which they are part which includes diversity within species, between species of ecosystems refers to (1) geographical diversity (2) zoological diversity (3) ecological diversity (4) biological diversity