The biosphere refers to the part of the Earth’s surface and atmosphere where living organisms exist. It is the layer of the planet where all life on Earth is found, including animals, plants, and microorganisms. The biosphere is made up of a complex web of ecosystems that interact with one another and with the physical environment in a delicate balance.
Here are some MCQs on biosphere:
1. The term “biosphere” refers to:
a) All the living organisms on Earth
b) The part of Earth where life can exist
c) The Earth’s atmosphere
d) None of the above
2. What is the primary source of energy for most ecosystems?
a) Wind
b) Water
c) Sunlight
d) Fossil fuels
3. Which of the following is NOT a component of the biosphere?
a) Atmosphere
b) Hydrosphere
c) Lithosphere
d) None of the above
4. Which of the following is NOT an example of a biotic factor in an ecosystem?
a) Plants
b) Animals
c) Rocks
d) Bacteria
5. What is the name for the process by which plants convert sunlight into chemical energy?
a) Respiration
b) Photosynthesis
c) Decomposition
d) Fermentation
