Easy
Average
Hard
Riddles
100
Which is not a natural ecosystem?
(A) Desert
(B) Aquarium
(C) Forest
(B) Aquarium
100
Give a short note on ecosystem?
Ecosystem: It is a system formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment in which they live, all linked by transfer of energy and material.
100
Why plants and animals depend on each other?
- Plants and animals are interdependent on each other.
- Plants depend on animals for pollination, and they absorb nutrients from decomposed animal bodies to grow.
- Animals depend on plants for food, shelter, protection, to get oxygen and so on.
100
Identify the picture.
Ecosystem
200
Which is threat to environment?
(A) Growing plant
(B) Growing population
(C) Growing crops
(B) Growing population
200
Explain which component this is.
Hydrosphere.The domain of water is referred to as hydrosphere. It comprises various sources of water and different types of water bodies like rivers, lakes, seas, oceans, etc. It is essential for all living organisms.
200
Give a explanation of environment.
Environment is our basic life support system. It provides the air we breathe, the water we drink, the food we eat and the land where we live. In simple word we can say that the surroundings or conditions in which a person, animal, or plant lives or operates.
200
Guess me.
My home is the sky. Many birds fly on me, and I can see planes. My name starts with A.Who am I?
(Hint: I AM CATOGRISED IN NATURAL ENVIRONMENT.)
Atmosphere
300
What are the types of natural environment?
Lithosphere, Hydrosphere, Atmosphere, Biosphere.
300
What is the meaning of french word of 'Environer'.
Environment: French word Environer/ Environner meaning “neighbourhood”.
300
What is lithosphere?
Lithosphere is the solid crust or the hard top layer of the earth. It is made up of rocks and minerals and covered by a thin layer of soil. It is an irregular surface with various landforms such as mountains, plateaus, plains, valleys, etc.
300
Which is a destruction to environment? Why is it destructive?
(A)(b)
(a)
The option 'a' is a threat to environment because deforestation contributes to climate change. Forests act as carbon sinks, absorbing carbon dioxide (CO2) from the atmosphere.
400
What is barter system?
It is a trade in which goods are exchanged without the use of money.
400
What are the components of the environment?Explain with examples.
There are 3 components of environment. They are natural environment, human environment, human-made environment.
Natural environment is the environment that consists of all living thing rather than human made environment. It consists of water, air, land, living things,etc.
400
Why is Biosphere important to plants and animals?
Plant and animal kingdom together make biosphere or the living world. It is a narrow zone of the earth where land, water and air interact with each other to support life. This is why biosphere is important.
400
Guess the word: form these words together and find out which type of natural environment.
plant kingdom
animal kingdom
biosphere
500
When is world environment day celebrated?
June 5
500
What is abiotic and biotic conditions?
Biotic The world of living organisms. e.g. plants and animals.
Abiotic The world of non-living elements. e.g. land.
500
Which are the two major components of biotic environment
The two major components of the biotic environment are plants and animals. These living organisms play essential roles in ecosystems, contributing to biodiversity and sustainability.
500
Guess the picture:
THEY ARE EXCHANGING GOODS. 
Barter system