ICSE Class 10 Geography Soil Resources: Answer Summary
ICSE Class 10 Geography soil resources questions on “give geographical reasons” must connect each soil fact with its cause. Soil conservation is necessary because fertile topsoil is lost quickly by erosion but forms slowly; red soil has poor water retention because it is porous, coarse and low in humus; laterite soils are infertile because heavy rainfall causes leaching of soluble nutrients.
This page gives model answers for the soil resources reason question and explains how to frame each answer in board-style Geography language. The aim is not to memorise three sentences only, but to understand the process behind each statement so that similar soil questions can be answered correctly.
Method for Give Geographical Reasons in Geography
In ICSE Class 10 Geography, a “give geographical reasons” answer should not be a one-word cause. The examiner looks for a clear link between the given statement and the geographical process behind it. For soil resources, the process may be erosion, porosity, humus deficiency, leaching, acidity or loss of fertility.
Use this four-step method for each answer:
| Step | What to do | How it applies to soil resources |
|---|---|---|
| 1. Identify the fact | Read the statement carefully. | Example: “Laterite soils are infertile.” |
| 2. Name the cause | Choose the correct soil process or property. | For laterite soil, the main cause is leaching. |
| 3. Connect cause and effect | Explain how the cause produces the result. | Heavy rain washes soluble nutrients down from the top layer. |
| 4. End with the exact reason | Write one or two complete sentences. | The soil becomes acidic, humus-poor and low in natural fertility. |
Concept snapshot: think of soil as a bank account
Fertile soil is like a bank account that stores nutrients, organic matter and moisture for crops. Erosion is like losing the account itself because the top layer is removed. Leaching is like money slowly draining out of the account because soluble nutrients are washed down by heavy rain. This is why the reason must mention the correct loss: topsoil loss for conservation, water loss for red soil, and nutrient loss for laterite soil.
Question 49: Give Geographical Reasons on Soil Resources
Question: Give a geographical reason to explain each of the following:
- Soil conservation is the need of the hour.
- Red soil has a poor water retention capacity.
- Laterite soils are infertile.
The following model answers are written in a cause-and-effect format. For short-answer practice, students may reduce each answer to two clear sentences, but the process should remain the same.
49(a) Soil Conservation Is the Need of the Hour
Worked answer
Given statement: Soil conservation is urgently needed.
Cause to identify: Loss of fertile topsoil through erosion and land misuse.
Step 1: Identify what must be protected. The upper layer of soil, called topsoil, contains mineral particles, humus, air and water. This layer supports plant growth and agriculture.
Step 2: Explain why the resource is at risk. Topsoil forms slowly through weathering and the addition of organic matter. However, running water, wind, deforestation, overgrazing, unscientific farming and excessive removal of vegetation can remove it much faster than it forms.
Step 3: Connect the loss to human need. When topsoil is lost, the land loses fertility. Crop yield falls, bare land increases, and the area may become more exposed to further erosion.
Final answer: Soil conservation is the need of the hour because fertile topsoil is a slow-forming resource, but it is being rapidly removed by erosion and human misuse. Conserving soil is necessary to protect soil fertility, agriculture and land productivity.
Useful extra point: Suitable conservation methods include afforestation, contour ploughing, terracing, strip cropping, controlled grazing and proper land use. Do not list all methods unless the question asks for methods; for a reason answer, the main focus is why conservation is needed.
49(b) Red Soil Has Poor Water Retention Capacity
Worked answer
Given statement: Red soil does not hold much water.
Cause to identify: Porous texture and low humus/clay content.
Step 1: Recall what water retention means. Water retention is the ability of soil to hold water in the spaces between particles and make it available to plant roots.
Step 2: Link the property to red soil. Red soil is generally porous and often sandy or coarse in texture. It is usually poor in humus and has less clay than soils that hold water well.
Step 3: Explain the result. Because the particles do not bind water strongly, rainwater or irrigation water percolates downward quickly. Less moisture remains near the plant roots.
Final answer: Red soil has poor water retention capacity because it is generally porous, coarse in texture and poor in humus and clay; therefore water drains through it quickly.
Edge case: Red soils are not exactly the same everywhere. A red loam with more clay can hold more moisture than a sandy red soil. In standard ICSE Geography answers, however, red soil is usually described as having low water-retaining capacity because of its porous texture and low humus content.
49(c) Laterite Soils Are Infertile
Worked answer
Given statement: Laterite soils have low natural fertility.
Cause to identify: Leaching in regions of heavy rainfall and high temperature.
Step 1: Recall the formation condition. Laterite soil develops under conditions of high temperature and heavy rainfall. These conditions encourage intense weathering.
Step 2: Explain leaching. Leaching is the downward washing of soluble minerals and nutrients by rainwater. When heavy rain passes through the soil repeatedly, soluble plant nutrients are carried below the upper layer.
Step 3: State the effect on fertility. Nutrients such as lime and potash are reduced in the upper soil. The soil often becomes acidic and poor in humus, so its natural fertility is low.
Final answer: Laterite soils are infertile because heavy rainfall causes leaching, which removes soluble nutrients from the upper layer and leaves the soil acidic, poor in humus and low in natural fertility.
Practical application: Laterite soil can still support crops in some regions if manure, fertilisers and irrigation are used. For example, crops such as tea, coffee, cashew and coconut may be grown where climate and management are suitable. But for the geographical reason “laterite soils are infertile”, the core cause remains leaching.
Board-Style Answer Frame for Soil Resources
A good answer in Geography uses the word “because” early and names the process. The table below shows how to move from a vague answer to a board-style answer.
| Statement | Weak answer | Better answer frame |
|---|---|---|
| Soil conservation is needed. | Because soil is useful. | It is needed because fertile topsoil is easily removed by erosion and takes a long time to form. |
| Red soil retains little water. | Because it is not good soil. | It retains little water because it is porous, coarse and poor in humus and clay. |
| Laterite soil is infertile. | Because it gets too much rain. | It is infertile because heavy rainfall causes leaching, which removes soluble nutrients from the upper layer. |
Examiner’s Mindset for ICSE Geography Reasons
For a “give geographical reasons” question, marks are usually earned by showing the correct cause-and-effect link, not by writing a long paragraph. A precise answer names the process and explains the result. For example, in the laterite soil answer, the key marking idea is not merely “heavy rainfall”; it is heavy rainfall causing leaching of soluble nutrients.
In timed practice, write two focused sentences: first sentence for the process, second sentence for the result. This keeps the answer clear and reduces the chance of mixing facts from different soil types.
Common Mistakes Students Make
- Repeating the question: Writing “laterite soil is infertile because it is not fertile” gives no geographical reason. Correct it by adding the cause: leaching removes soluble nutrients.
- Confusing red soil and laterite soil: Both may appear reddish due to iron compounds, but the answer focus differs. Red soil water retention is linked to porosity and low humus; laterite soil infertility is linked to leaching.
- Using one cause for every soil statement: Erosion, porosity and leaching are different processes. Match the reason to the exact statement.
- Overwriting the answer: A long paragraph can hide the correct point. A short answer with the right process is stronger than a long answer with mixed facts.
- Leaving out the final effect: If you mention “leaching,” also say what leaching does: it removes soluble nutrients and reduces fertility.
Quick Answer Index
| Question | Answer / status |
|---|---|
| 49(a) | Soil conservation is needed because fertile topsoil is lost quickly by erosion and misuse, while soil formation is slow. |
| 49(b) | Red soil has poor water retention capacity because it is porous, coarse and poor in humus and clay. |
| 49(c) | Laterite soils are infertile because leaching removes soluble nutrients, leaving the soil acidic and poor in humus. |
Related ICSE Class 10 Geography Revision
For wider Geography revision, use the ICSE Class 10 Geography book and syllabus guide to connect soil resources with climate, natural vegetation, water resources and agriculture. Check the ICSE Class 10 syllabus before final revision so that you practise only the required topics.
For timed answer writing, solve ICSE Class 10 Geography previous year papers and compare your wording with the cause-and-effect method on this page. You can also use ICSE Class 10 specimen papers to practise short Geography answers under exam-style conditions.
For the official syllabus source, students should check the CISCE official website and their school-prescribed Geography textbook. NCERT Geography material may help with basic concepts such as soil as a resource, erosion and conservation, but ICSE students should follow the CISCE syllabus and school-prescribed book for exact scope.
Frequently Asked Questions
How should I write give geographical reasons answers in ICSE Class 10 Geography?
Write the answer in a cause-and-effect form. Identify the statement, name the geographical process or soil property, and then connect it with the result using words such as because, due to, or therefore.
Why is soil conservation called the need of the hour?
Soil conservation is called the need of the hour because fertile topsoil forms very slowly but can be removed quickly by erosion, deforestation, overgrazing and faulty cultivation. Conserving soil helps maintain fertility and agricultural productivity.
Why does red soil have poor water retention capacity?
Red soil has poor water retention capacity because it is generally porous, often coarse or sandy in texture, and poor in humus and clay. Water therefore percolates through it quickly instead of staying near plant roots.
Why are laterite soils infertile in ICSE Class 10 Geography?
Laterite soils are infertile mainly because heavy rainfall causes leaching. Soluble nutrients such as lime and potash are washed down from the upper layer, leaving the soil acidic and poor in humus.
Can laterite soil be used for crops after improvement?
Yes. Laterite soil has low natural fertility, but in suitable regions it can support crops such as tea, coffee, cashew and coconut when manure, fertilisers and irrigation are added. For a give geographical reasons answer, however, the key cause of infertility is leaching.
Downloads & PDF Resources
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| ICSE Class 10 Geography question papers |