Chapter Chosen

Organisms and Populations

Book Chosen

Biology

Subject Chosen

Biology

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

Mycorrhizae are the example of

  • Fungistasis

  • Amensalism

  • Antibiosis

  • Mutualism


D.

Mutualism

785 Views

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
878 Views

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
587 Views

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

A.

N
738 Views

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

B.

by secretion of pheromones
697 Views

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

D.

Emigration
574 Views