When pre-reproductive and post-reproductive age group is same in structure, the population is

In which type of interactions, interacting species do not live closely together ?

Name the interaction in which one species is harmed but the other remains unaffected,

Choose the correct statement from the following

What is the meaning of symbiosis?

Gause’s ‘Competitive Exclusion Principle’ can work only when

The word commensalism means

Which of the following is not a classical example of commensalism?

Calotropis plant is poisonous for herbivores as it is rich in

Term ecology was first used by