Consider the following statements regarding 'Low Sedimentary Coasts': 1. Rivers shorten their length by eroding coastal plains. 2. The coastline appears smooth with occasional incursions of water into the land. 3. Lagoons and tidal creeks are common. Which of the statements given above is/are correct?

The correct option is A. Explanation The classification of coasts into high rocky coasts and low sedimentary coasts is based on the nature of the shoreline and the dominant geomorphic processes. Low sedimentary coasts are characterized by depositional landforms where the sea gently meets a low-lying landmass. Statement-wise Analysis: - Statement 1 is Incorrect: On low sedimentary coasts, rivers do not shorten their length by eroding coastal plains. Instead, rivers tend to extend their length by building deltas and depositing sediments across the broad, flat coastal plains. Erosion is not the dominant process; rather, the gradual accumulation of sediment leads to the progradation of the coastline. - Statement 2 is Correct: The coastline along low sedimentary shores appears relatively smooth. This smoothness is a result of continuous depositional activity. Occasional incursions of water into the land occur in the form of lagoons and marshes, but the overall profile lacks the sharp, irregular indentations (like fjords) found on high rocky coasts. - Statement 3 is Correct: Depositional features such as lagoons, tidal creeks, spits, bars, and barrier islands are characteristic of low sedimentary coasts. These features form as waves and currents move sediments along the shallow offshore zone, creating protected bodies of water and intricate drainage networks. Key Takeaway: Low sedimentary coasts are defined by depositional landforms (deltas, lagoons, and bars) and a gradual extension of river length into the sea, resulting in a generally smooth coastline.

Consider the following statements regarding 'Low… - NCERT Class 11 Geography MCQ

NCERT Class 11 Geography — Chapter 5: Landforms and Their Evolution

mcqmedium

Consider the following statements regarding 'Low Sedimentary Coasts':

Rivers shorten their length by eroding coastal plains.
The coastline appears smooth with occasional incursions of water into the land.
Lagoons and tidal creeks are common.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Fundamentals of Physical Geography · Page 57

Options

A2 and 3 only
B1 and 2 only
C2 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is A.

Explanation

The classification of coasts into high rocky coasts and low sedimentary coasts is based on the nature of the shoreline and the dominant geomorphic processes. Low sedimentary coasts are characterized by depositional landforms where the sea gently meets a low-lying landmass. Statement-wise Analysis:

Statement 1 is Incorrect: On low sedimentary coasts, rivers do not shorten their length by eroding coastal plains. Instead, rivers tend to extend their length by building deltas and depositing sediments across the broad, flat coastal plains. Erosion is not the dominant process; rather, the gradual accumulation of sediment leads to the progradation of the coastline.
Statement 2 is Correct: The coastline along low sedimentary shores appears relatively smooth. This smoothness is a result of continuous depositional activity. Occasional incursions of water into the land occur in the form of lagoons and marshes, but the overall profile lacks the sharp, irregular indentations (like fjords) found on high rocky coasts.
Statement 3 is Correct: Depositional features such as lagoons, tidal creeks, spits, bars, and barrier islands are characteristic of low sedimentary coasts. These features form as waves and currents move sediments along the shallow offshore zone, creating protected bodies of water and intricate drainage networks.

Key Takeaway: Low sedimentary coasts are defined by depositional landforms (deltas, lagoons, and bars) and a gradual extension of river length into the sea, resulting in a generally smooth coastline.

Your note

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