Question

The total number of species of plants, animals and microorganisms living on the Earth planet is called
A. Biodiversity
B. Flora
C. Fauna
D. Ecosystem

Answer 1

Hint: There is a huge diversity of living organisms including animals, plants, and microorganisms on the earth. These species interact with each in many ways forming different components on earth. Interaction within and between each other helps in the survival of each other.

Step by step answer:Option -A- Biodiversity
It is defined as an enormous variety of living organisms on the earth or a variety of life forms on earth. It is defined as a huge diversity of all species of plants, animals, and microorganisms on the earth. It includes the variety between and within every species of all the living life forms within which they live and interact with each other. It is also a measure of variations at all levels including genetic, species, and ecosystem.
Option -B- Flora
It is defined as the presence of all plant life present in a particular region or at a particular time I.e. the naturally occurring plants of that particular region or native plants. The term flora is related to plants only and not other species of animals or any microbes.
Option -C- Fauna
This term is used for animals of a particular region or particular time. The term used for the native animals of a particular region representing the diversity of animals. So this term is used for a diversity of animals only.
Option -D- Ecosystem
The species of plants, animals, and other organisms in a geographic area along with non-living components such as weather and landscape, etc. Interacting together as a single system is known as an ecosystem. It is defined as both living and non-living components of a particular geographic area only. So, the correct answer to this question is the option” A” Biodiversity.

Note: There is a large number of species on earth and this huge variety of each species of animals, plants, and microorganisms are given the term biodiversity to provide easy study and facilitate the proper division.