Community is

$I.$ Group of independent, interacting populations of same species

$II.$ Group of independent and interacting populations of same species in specific area

$III.$ Group of independent interacting populations of different species in a specific area

$IV.$ Group of independent and interacting populations of different species in different area

Select the correct option

Father of Indian ecology is

Select the incorrect statement w.r.t. ecotypes

The study of inter-relationship between living organisms and their environment is called

Name the famous plants ecologist