Question

Estuaries occur in

• A. Orissa and Tamil nadu
• B. Kerala and Tamil nadu
• C. Kerala and Orissa
• D. Kerala, Tamil nadu and Orissa

Answer 1

The correct option is D Kerala, Tamil nadu and Orissa

An estuary is the tidal mouth of a river or coastal bay, where mixing of fresh and sea water occurs. It is highly productive due to turbulence. There are fluctuations in temperature and salinity. Dominant life forms are phytoplanktons (blue-green algae, green algae, diatoms, dinoflagellates), zooplankton (Protozoans, Crustaceans, Rotifers), necton (fishes and some Crustaceans) and benthon (attached algae, snail, clams, prawn etc.). In India, estuaries are found in coastal states like Kerala, Tamil Nadu and Orissa. In these states major rivers like Mahanadi, Periyar, Kaveri etc. meet the sea

So, the correct answer is 'Kerala, Tamil Nadu and Orissa'