Q. Consider the following statements regarding Estuary Ecosystems:
1.Estuaries are classified solely based on salinity and are unaffected by geomorphological or hydrological factors.
2.Estuaries act as transition zones between riverine and marine ecosystems and serve as natural sediment traps, aiding delta formation.
3.Despite tidal influence, estuaries exhibit minimal wave action making them ideal nurseries for many aquatic species.
How many of the above statements is/are correct?
Answer: B
Notes:
Explanation:
- Estuaries are not classified solely on salinity. They are categorised by geomorphological features (like coastal topography) and water circulation patterns as well (e.g., fjords, bar-built estuaries, tectonic estuaries, etc.).
- Estuaries serve as transition zones and act as sediment traps, promoting delta formation where river sediments settle as freshwater meets seawater.
- Estuaries typically have very little wave action due to their semi-enclosed nature, making them safe, calm environments ideal for juvenile aquatic species — hence often referred to as natural nurseries.
Source: Environment (N.C.E.R.T)
