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Organisms and Populations

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

A high density of elephant population in an area can result in

  • Mutualism

  • Intraspecific competition

  • Interspecific competition

  • Predation on one another


B.

Intraspecific competition

Intraspecific competition is an important density dependent factor regulating populations. Intraspecific competition occur between the members of same population. 

Intraspecific competition is an important density dependent factor regulating populations. Intraspecific competition occur between the members of same population. 


Population density is denoted by the symbol
  • N
  • D
  • M
  • D

A.

N

Ants give information to their companions :
  • by dancing
  • by secretion of pheromones
  • by making sound
  • by defecating

B.

by secretion of pheromones

The number of births during a given period in the
population that are added to the initial density is 

 :
  • Natality
  • Mortality
  • Migration
  • Immigration

A.

Natality

To live in groups is beneficial because :
  • feeling of security
  • can obtain food easily
  • Partner is available for mating
  • All the above

D.

All the above

The departure of a individual from a population is called :
  • Natality 
  • Mortality
  • Immigration 
  • Emigration

D.

Emigration