Biosphere

Q. What is the biosphere?

1. It is the regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
2. It is a layer or a set of layers of gases surrounding a planet or another material body, that is held in place by the gravity of that body.
3. It is the combined mass of water found on, under, and above the surface of the planet Earth, minor planet or natural satellite.
4. It is the rigid, outermost shell of a terrestrial-type planet, or natural satellite, that is defined by its rigid mechanical properties.

Q. Which is the only planet with various forms of life on it?

1. Venus
2. Mars
3. Jupiter
4. Earth

Q. Which is the part of the Earth where life exists?

1. Biosphere
2. Hydrosphere
3. Lithosphere
4. Atmosphere

Q. _________ is made of thin layer of soil, rocks and minerals.

1. Hydrosphere
2. Atmosphere
3. Biosphere
4. Lithosphere

Q. The solid crust or the hard top layer of the earth is called _______.

1. Lithosphere
2. Hydrosphere
3. Atmosphere
4. Biosphere

Q. Differentiate between:


(a) Wildlife sanctuary and biosphere reserve [2 marks]
(b) Extinct and endangered species [2 marks]

Q. The part of the earth comprising the soil, air, and water which sustains life is called:

1. Biosphere
2. Atmosphere
3. Lithosphere
4. Hydrosphere

Q. is the rigid outermost layer of the Earth.

1. Hydrosphere
2. Atmosphere
3. Lithosphere

Q. The cover of air around the earth is known as .

1. biosphere
2. hydrosphere
3. atmosphere

Q. Biosphere is ___.

1. Composed of the plants present in the soil
2. A component in the ecosystem
3. Life in the outer space
4. Composed of all living organisms present on earth which interact with the physical environment