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Model Activity Task class 7 Geography Part 1 Answers
The First chapter of Geography Class 7th is on Environment means basic life support system. The environment provides the air we breath, the water we drink, the food we eat, and the land where we live. So we should love and protect our environment.
Answer the following questions
1. What is an ecosystem?
Answer: An ecosystem is like a big team of plants, animals, and other living things that all need each other. They work together and help each other out. For example, plants give food and homes to animals, and animals help plants grow by spreading their seeds. It’s a special system where everyone has a job and they all rely on each other to stay healthy and happy.
2. What do you mean by natural environment?
Answer: The natural environment is the world around us that is not made by people. It includes things like forests, oceans, mountains, rivers, and all the living things in them. It’s like Earth’s own special home with its own beauty. We get clean air, freshwater, and a place for plants and animals to live in the natural environment. It’s important to take care of it so that it can keep providing us with what we need.
3. Which are the major components of the environment?
Answer: Air, Water, Land, Plants and animals, Sunlight and Climate, etc. These components work together to create and sustain our environment, providing resources for life.
4. Give four examples of human-made environment.
Answer: Human-made environments are:
- Cities: Urban areas with buildings, roads, and infrastructure.
- Farms: Agricultural areas for crop cultivation and animal rearing.
- Parks and Gardens: Man-made green spaces for recreation and aesthetics.
- Industrial Areas: Zones with factories and warehouses for production and processing.
These environments are created or modified by humans to serve specific purposes.
5. What is lithosphere?
Answer: The lithosphere is the Earth’s outer layer, including the crust and upper part of the mantle.
6. Which are the two major components of an abiotic environment?
Answer: Two major components of abiotic environment are given below
- Plants: They include trees, flowers, grass, and all other types of vegetation.
- Animals: They comprise mammals, birds, reptiles, insects, and other living creatures.
The above two components interact with each other and with the abiotic (non-living) elements of the environment to form the ecosystem.
7. What is the biosphere?
Answer: The biosphere is the part of the Earth where living organisms exist. It includes all the ecosystems and habitats on land, in water, and in the air. The biosphere encompasses all forms of life, from tiny microorganisms to plants, animals, and humans.
Tick the correct answer
(i) Which is not a natural ecosystem?
(a) Desert (b) Aquarium (c) Forest
Answer: (B) Aquarium
(ii) Which is not a component of the human environment?
(a) Land (b) Religion (c) Community
Answer: (A) Land
(iii) Which is a human-made environment?
(a) Mountain (b) Sea (c) Road
Answer: (C) Road
(iv) Which is a threat to the environment?
(a) Growing plant
(b) Growing population
(c) Growing Crops
Answer: (C) Growing Crops
Match the following
(i) Biosphere (a) blanket of air which surrounds the earth
(ii) Atmosphere (b) domain of water
(iii) Hydrosphere (c) gravitational force of the earth
(iv) Environment (d) our surroundings
(e) narrow zone where land water and air interact
(f) relation between the organisms and their surroundings
(i)Biosphere (d) our surroundings
(ii) Atmosphere (a) blanket of air which surrounds the earth
(iii) Hydrosphere (b) domain of water
(iv) Environment (f) relation between the organisms and their surroundings
Give Reasons for the following
(i)Man modifies his environment?
Answer: Humans modify their environment for several reasons:
- Meeting basic needs
- Improving comfort and convenience
- Economic development
- Technological advancements
- Environmental stewardship
(ii) Plants and animals depend on each other?
Answer: Plants and animals depend on each other for food, pollination, seed dispersal, shelter, oxygen exchange, and maintaining balance in ecosystems.
Imagine an ideal environment where you would love to live. Draw a picture of
your ideal environment.