The ecological concept of 'Ecological Niche' (micro-habitat) was first proposed by whom?

Which of the following statements is not true about "ecological niche" ?

Ecological niche refers to

Ecological succession is generally demonstrated by: 1. Increase in productivity 2. Lack of niche development 3. Increasing complexity of food web Select the correct answer code:

If you want to see gharials in their natural habitat, which one of the following is the best place to visit?

Among the following Tiger Reserves, which one has the largest area under “Critical Tiger Habitat”?