Ecology describes

(1) Interactions between living organisms only

(2) Interactions between members of a single species only

(3) Interactions of organisms among themselves as well as with their surrounding abiotic components

(4) Intraspecific competitions only

Father of Indian ecology is

(1) H. Reiter

(2) G. S. Puri

(3) Ramdeo Misra

(4) Hutchinson

Ecological niche is:(NCERT Exemplar)
1. The surface area of the ocean
2. An ecologically adapted zone
3. The physical position and functional role of a species within the community
4. Formed of all plants and animals living at the bottom of a lake

Ecology is basically concerned with four levels of biological organisation. Which one of the following is the correct representation?
1. Population$\to$Ecosystem$\to$Biome$\to$Landscape
2. Communities$\to$Population$\to$Ecosystem$\to$Biome
3. Organisms$\to$Population$\to$Communities$\to$Biome
4. Species$\to$Ecosystem$\to$Communities$\to$Biome

Which is the correct order of ecological hierarchy?

(1) Biome $\to$ Populations $\to$ Community $\to$ Organism

(2) Organism $\to$ Biome $\to$ Population $\to$ Community

(3) Population $\to$ Community $\to$ Biome $\to$ Organism

(4) Organism $\to$ Population $\to$ Community $\to$ Biome

Members of a  population

(1) Can interbreed and produce fertile offsprings

(2) Share a common gene pool

(3) Share or competitor for similar resources

(4) More than one option is correct

What parameters are used for tiger census in our country’s national parks and sanctuaries?(NCERT Exemplar)
1. Pug marks only
2. Pug marks and faecal pellets
3. Faecal pellets only
4. Actual head counts