Why is Eichhornia crassipes nicknamed as "Terror of Bengal""?

What is the difference between flora, fauna and vegetation? Eichhornia crassipes is called as an exotic species while Rauwolfia serpentina is an endemic species in India. What do these terms exotic and endemic refers?

True and False Type Questions Eichhornia is commonly called as carrot grass.

Why 'water hyacinth' plant is called 'Terror of Bengal'?

Why is animal husbandry essential?

Why is a potentiometer named as potentiometer?

Why are coral reefs not found in the regions from West Bengal to Andhra Pradesh but are found in Tamil Nadu and the east coast of India?

In case of extinction of Bengal Tiger