Identify the sphere which does not form a biosphere-
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Chromosphere
The biosphere is the narrow zone of the Earth where life exists. It is formed where the land, water and air of the Earth meet, so it is made up of parts of three of the four spheres below:
Option (1) Chromosphere — a layer of the Sun’s atmosphere, just above its visible surface (the photosphere); it has nothing to do with the Earth, so it does not form the biosphere.
Option (2) Atmosphere — the layer of air round the Earth, which gives living things oxygen and carbon dioxide.
Option (3) Lithosphere — the solid outer crust of the Earth, the soil and rock on which plants and animals live.
Option (4) Hydrosphere — all the water on the Earth: oceans, rivers, lakes, ice and groundwater.