Question

Biosphere refers to:
A. Plants of the world
B. Special plants
C. Area occupied by living beings
D. Plants of a particular area

Answer 1

Hint: Area near the surface of the earth can be divided up into four interconnected geospheres known as the: Lithosphere, Hydrosphere, Biosphere and Atmosphere. Lithosphere refers to the solid and rocky crust that covers up the entire planet. The Hydrosphere includes all forms of water on the Earth’s surface. All living organisms, including plants and animals come under the Biosphere. Air surrounding earth refers to the Atmosphere.

Complete answer:
Option A) Plants of the world: There are about species of plants which provide a substantial proportion of the world's oxygen, and are the basis of most of Earth's ecosystems. There is no specific term for referring to all plants of the world.
Hence option A is not correct.
Option B) Special plants: Although there are numerous species of plants, there are also special plants living in between them. This includes Rafflesia Arnoldii, which has the largest flower and Encephalartos Woodie, which is one of the rarest plants. But these special plants do not have a specific or common term.
Hence option B is not correct.
Option C) Area occupied by living beings: One of the four geospheres is the biosphere. Biosphere is mainly referred to as the Earth’s surface where all living beings are found. It is the life-supporting stratum of Earth’s surface. It is the part where life exists on Earth.
Hence option C is the correct answer.
Option D) Plants of a particular area: The varieties of plants found in a particular area are termed as flora. Flora can be classified and differentiated based upon many factors. One of the best classifications among them is the area in which they grow or are found.
Hence option D is not correct.

Hence, the correct answer is Option C. Area occupied by living beings.

Note:
Biosphere extends from a few kilometers into the atmosphere to deep-sea vents of the ocean. With regards to matter, the biosphere is a closed system, with minimal inputs and outputs. It is an open system for energy, with photosynthesis at a rate of approximately Terawatts per year capturing solar power. Biosphere is a self-regulating system which is close to energetic equilibrium.