POPULATION ECOLOGY

‘The population grows at their biotic potential for some time and the growth pattern changes because of the limiting factors’

The above statement best describes

• Exponential growth

• Log phase

• S-shaped growth curve

• Lag phase

A group of organisms of the same species that live together in a particular area is referred as

• Population ecology

• population

• population growth

• population density

A population grows exponentially when _________________

• Death rates remain above birth rates

• Birth rates exceed death rates

• Immigration rates exceed emigration rates

• Immigration rates and emigration rates are equal

The carrying capacity of a population is determined by its

• Population growth rate

• Death rate

• Birth rate

• Limiting resources

In young population , exponential growth occurs when

• There is asexual reproduction only

• There is sexual reproduction only

• There is a discrete environmental resistance

• There is a continuous supply of resources

The rate of increase or decrease of a population depends on the rate of

I natality III immigration

II mortality IV Emigration

• I,II and III

• I,II and IV

• I,III and IV

• I,II,III and IV

The maximum growth rate of a population under ideal conditions is

• the carrying capacity

• the environmental resistance

• the biotic potential

• the recruitment

Human populations on Earth are showing

• exponential growth

• logistic growth

• lag phase of exponential growth

• lag phase of logistic growth

Flood, fires, drought, storms, earthquakes, tsunami and pollutants regulate population growth

• by affecting only large populations

• by affecting only small populations

• by affecting large populations more than small populations

• irrespective of population size

If we consider a closed population with n immigration or emigration, what will happen to the population when death is more than birth?

• Population shrinks

• Population grows

• Nothing happens to the population

• Population stabilises