Human Environment Interactions Class 7 important questions with answers PDF download
FAQs on CBSE Important Questions for Class 7 Social Science Human Environment Interactions - 2025-26
1. What are the most important reasons for the depletion of rainforests as discussed in CBSE Class 7 Social Science Chapter 6?
The depletion of rainforests is a critical topic for exams. The primary reasons as per the 2025-26 syllabus include:
- Developmental Activities: Large-scale projects, like the construction of the Trans-Amazon highway, have made previously inaccessible parts of the forest reachable for exploitation.
- Industrialisation: Forests are cleared to set up industries and for extensive mining operations.
- Agriculture: Large patches of forest are cleared for farming, both through 'slash and burn' agriculture by indigenous populations and for large commercial farms.
- Lumbering: The high demand for wood in global markets leads to widespread and often illegal cutting of trees.
- Soil Erosion: Once the protective tree cover is removed, the topsoil is easily washed away by heavy rains, turning lush green forests into barren landscapes.
2. Explain the key geographical factors that make the Ganga-Brahmaputra plains suitable for paddy cultivation.
The Ganga-Brahmaputra plains are highly suitable for growing paddy due to a combination of favourable factors:
- Fertile Soil: The rivers deposit rich, alluvial soil every year, which is ideal for agriculture and reduces the need for artificial fertilisers.
- Sufficient Water: The region receives adequate rainfall from the monsoons, and the presence of numerous rivers provides water for irrigation throughout the year.
- Flat Topography: The plains have a gentle slope, which is perfect for developing canal irrigation and for the cultivation of rice.
- Favourable Climate: The area has high temperatures and high humidity during the monsoon season, which are essential for the growth of paddy.
- Abundant Labour: Being one of the most densely populated areas in the world, there is a large supply of inexpensive labour available for farming activities.
3. Describe the lifestyle and agricultural practices of the people living in the Amazon rainforests.
The people of the Amazon rainforests have a lifestyle uniquely adapted to the environment. Men typically engage in hunting and fishing in the rivers, while women are responsible for the crops. They primarily practise 'slash and burn' agriculture. In this method, a patch of forest is cleared by cutting and burning the trees. Crops are then grown in this clearing for a few years until the soil loses its fertility. The main crops grown include tapioca, pineapple, and sweet potato, with manioc (also known as cassava) being a staple food. They live in large, thatched-roof houses called 'Maloca', which have steeply slanting roofs to allow rainwater to run off.
4. How is the fauna of the Amazon Basin different from that of the Ganga-Brahmaputra Basin?
The fauna in the two basins are distinct due to major differences in climate, vegetation, and geography.
- Amazon Basin: It is famous for its incredible biodiversity. It is home to exotic birds like toucans and hummingbirds with brightly coloured plumage, and animals like monkeys, sloths, and ant-eating tapirs. The rivers are filled with thousands of species, including the flesh-eating piranha fish and giant snakes like the anaconda.
- Ganga-Brahmaputra Basin: The fauna here is adapted to a monsoon climate and riverine plains. Common animals include elephants, deer, and monkeys. The delta area is the natural habitat of the famous Bengal tiger and crocodiles. The rivers are home to aquatic life like the endangered freshwater Ganges River Dolphin.
5. Why are the Ganga-Brahmaputra plains one of the most densely populated regions in the world?
The Ganga-Brahmaputra plains support a high population density primarily due to factors that favour human settlement and agriculture. The fertile alluvial soil, deposited annually by the rivers, supports intensive agriculture that can feed a large population. The flat terrain makes it easy to build transport networks, industries, and settlements. A reliable water supply from the rivers and monsoon rains further supports both farming and daily life, making it an ideal and sustainable place for human habitation for thousands of years.
6. What are some expected long-answer questions from 'Human Environment Interactions' for the 2025-26 exams?
For the 2025-26 exams, students should focus on comparative and descriptive long-answer questions from this chapter. Key expected questions often involve:
- A detailed comparison of the life, climate, and vegetation in the Amazon Basin versus the Ganga-Brahmaputra Basin.
- An explanation of how developmental activities are leading to the destruction and degradation of the Amazon rainforest.
- A description of the main features of the Ganga-Brahmaputra basin, including its topography, major crops, and unique wildlife like the Bengal Tiger and one-horned rhinoceros.
7. How can map-based questions be framed from this chapter in the Class 7 Social Science exam?
This chapter is ideal for map-based questions. For the exam, you might be asked to:
- Locate and Label: On an outline map of the world or a specific continent, identify and mark the Amazon River and its basin, or the Ganga and Brahmaputra rivers and their delta.
- Shade Regions: You could be asked to shade the area covered by the Amazon rainforest or the densely populated northern plains of India.
- Identify Features: A map might point to a specific location like the Sundarbans, and you would be asked to name the famous animal found there (e.g., Bengal Tiger).
8. What is the importance of cash crops in the Amazon and Ganga-Brahmaputra basins?
Cash crops are crops grown for sale in the market rather than for the farmer's own use, and they are vital to the economies of both regions.
- In the Amazon Basin, people grow cash crops like coffee, maize, and cocoa, which contribute to the local economy.
- In the Ganga-Brahmaputra Basin, important cash crops include jute, tea, and sugarcane. Tea is famously grown on the slopes in Assam and West Bengal, while jute cultivation is significant in the delta region. These crops are crucial for trade and employment.











