The Concept Of The Biosphere

Question 1

Where does the word “biosphere” come from?

Answer 1

The word comes from “bio” meaning life and “sphere”, which is the shape of the earth.

Question 2

Name the three different spheres and a brief description about them?

Answer 2

The Lithosphere: is made up of soil and rocks of the crust and seabed of the earth.
The hydrosphere: is all the water on earth and includes the oceans, lakes, rivers, and underground water.
The atmosphere: a layer of gases that surround the earth and can sustain life.

Question 3

Name 5 plants, 2 animals and 1 microorganism that you can find in the Lithosphere.

Answer 3

Acacia trees, ferns and edible plants like spinach and potato bushes. Protozoa and elephants and ants.

Question 4

How does the nitrogen- fixing bacteria help the soil.

Answer 4

It makes the soil become more fertile.

Question 5

What thrives in the water of the hydrosphere (2)

Answer 5

Algae and seaweed

Question 6

Name some of the animals that live in the hydrosphere? 6

Answer 6

Sea anemones, a multitude of species of fish and mammals like dolphins and whales.

Question 7

Name two types of microorganisms that inhabit ten hydrosphere in large volumes.

Answer 7

Amoebae and plankton

Question 8

Name the animals that spend their time in the Earths atmosphere.

Answer 8

Birds and flying insects

Question 9

What is the biosphere?

Answer 9

The biosphere is a group of spheres or layers where life exists on earth.