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Landforms and their Evolution

Madhya Pradesh Board · Class 11 · Geography

NCERT Solutions for Landforms and their Evolution — Madhya Pradesh Board Class 11 Geography.

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13 Questions Solved · 1 Section

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EXERCISES

1(i)In which of the following stages of landform development, downward cutting is dominated?Show solution
In the youth stage, streams are few and have steep gradients, so downward cutting is dominant.

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1(ii)A deep valley characterised by steep step-like side slopes is known asShow solution
A deep valley with steep step-like side slopes is called a canyon.

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1(iii)In which one of the following regions the chemical weathering process is more dominant than the mechanical process?Show solution
In a humid region, chemical weathering is more dominant than mechanical weathering because of the availability of water.

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1(iv)Which one of the following sentences best defines the term 'Lapies'?Show solution
Lapies are an irregular limestone surface with sharp pinnacles, grooves and ridges.

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1(v)A deep, long and wide trough or basin with very steep concave high walls at its head as well as in sides is known as:Show solution
A deep, long and wide trough or basin with very steep concave high walls at its head and sides is a cirque.

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2(i)What do incised meanders in rocks and meanders in plains of alluvium indicate?Show solution
Incised meanders in rocks and meanders in alluvial plains show the work of lateral erosion by rivers. Meanders in plains indicate flow over gentle gradients and active lateral erosion. Incised meanders in rocks show that a meandering river was later downcut into hard rock, often due to uplift or rejuvenation.

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2(ii)Explain the evolution of valley sinks or uvalas.Show solution
Valley sinks or uvalas form when sinkholes and dolines join together. This happens because of slumping of material along their margins or due to roof collapse of caves. As more openings merge, a long, narrow to wide trench-like depression is formed.

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2(iii)Underground flow of water is more common than surface run-off in limestone areas. Why?
2(iv)Glacial valleys show up many linear depositional forms. Give their locations and names.
2(v)How does wind perform its task in desert areas? Is it the only agent responsible for the erosional features in the deserts?
3(i)Running water is by far the most dominating geomorphic agent in shaping the earth's surface in humid as well as in arid climates. Explain.
3(ii)Limestones behave differently in humid and arid climates. Why? What is the dominant and almost exclusive geomorphic process in limestone areas and what are its results?
3(iii)How do glaciers accomplish the work of reducing high mountains into low hills and plains?

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Frequently Asked Questions

What are the important topics in Landforms and their Evolution for Madhya Pradesh Board Class 11 Geography?
Landforms and their Evolution covers several key topics that are frequently asked in Madhya Pradesh Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Landforms and their Evolution — Madhya Pradesh Board Class 11 Geography?
Understand the core concepts first, then work through the 67 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
Where can I get free NCERT Solutions for Landforms and their Evolution Class 11 Geography?
This page has free step-by-step NCERT Solutions for every exercise question in Landforms and their Evolution (Madhya Pradesh Board Class 11 Geography) — written the way examiners award marks: given, formula, working, answer.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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