Tag: CSIR Life Science Previous Year Questions and Solution Environment and Niche Concept

Individuals occupying a particular habitat and adapted to it phenotypically but not genotypically are known as (1) Ecophenes (2) Ecotypes (3) Ecospecies (4) Coenospecies   Ecophenes: Individuals Phenotypically Adapted to […]

Individuals with greater mass have a smaller surface area to volume ratio, which helps to conserve heat. This is known as (1) Leibig’s rule. (2) Cope’s rule. (3) Gloger’s rule […]

A positive association between absolute average individual fitness and population size over some finite interval is known as (1) Allee effect (2) Founder effect (3) Rensch’s rule (4) Bergmann’s rule […]

A general increase in the average body mass of animal population within a species with latitude is known as (1) Allen’s rule (3) Bergmann’s rule (2) Allee effect (4) Hamilton’s […]

The birds in tropics are generally smaller in size because of- (1) To increase surface area to volume ratio (2) To decrease surface area to volume ratio (3) For easy […]

Stenohaline organisms can (1) can only adapt to a narrow range of salinities (2) can adapt to a wide range of salinities, (3) can excrete extra salt to keep salt […]

Benthic organism of lakes or sea are usually- (1) Producer (2) Herbivores (3) Carnivores (4) Decomposers   Benthic Organisms in Lakes and Seas: Are They Producers, Herbivores, Carnivores, or Decomposers? […]

Limiting factor for primary production in open sea is (1) Constant tides (2) Low nutrients (3) High salinity (4) High temperature  Limiting Factor for Primary Production in the Open Sea: […]

Soil in naturally growing vegetation is- (1) Acidic due to decomposition of organic matter (2) Basic due to Bicarbonate in soil (3) Neutral due to silicate buffer (4) Acidic due […]

Which of the following are abiotic factors? (1) temperature, rain fall, pH, Nutrients (2) temperature, rain fall, pH, Food (3) temperature, rain fall, Pathogens (4) temperature, rain fall, pH, viruses […]