Select the statement which explains best parasitism. (a) One organism is benefited. (b) Both the organisms are benefited.

Lower levels of organization in multicellular organisms are cells, tissues and organs. These are followed by organ system and finally organisms. These levels are absent in unicellular organisms as they...

Aves.  Specific feature of Aves is that they are warm –blooded having a four chambered heart and modified forelimbs for flight.

(a) In ammonia (NH3) , N and H present in fixed ratio which supports the law of definite or constant proportions.  This law states, “a pure chemical compound always consists of...

Peasants and artisans of French society benefited from the revolution. Clergy, nobles and church had to relinquish power. It is obvious that those who had to forego power and privileges...

(a) Commensalism: Commensalism is an interaction between two species in which one species gets benefited while the other remains unaffected. An orchid growing on the branches of a mango tree...

Foreign gene is usually ligated to a plasmid vector and introduced in the host. As plasmid replicates and makes multiple copies of itself, so does the foreign gene gets replicated...

Foreign gene is usually ligated to a plasmid vector and introduced in the host. As plasmid replicates, and makes multiple copies of itself, so does the foreign gene gets replicated...

Organisms bearing both the sex organs in the same individual are called bisexual. Example, Hydra, Mustard.

Peasants and artisans of French society benefited from the revolution. Clergy, nobles and church had to relinquish power. It is obvious that those who had to forego power and privileges...

(4) Niche is the functional role played by the organism where it lives