Class Notes NCERT Solutions for CBSE Students
Question: What is biodiversity?
Answer: Biodiversity is the variety of plants, animals and microorganisms generally found in an area.
Question: What do you mean by flora and fauna?
Answer: Flora: Species of all plants found in a particular area is known as flora of that area.
Fauna: Species of all animals found in a particular area
Question: What is deforestation?
Answer: Cutting down forests and using the land for other purposes is known as deforestation.
Question: Why do some animals become endangered?
Answer: Some animals cannot adjust to the environmental changes and begin to die. These animal species become endangered as their population becomes very small.
Question: What is a biosphere reserve?
Answer: A biosphere reserve is a large protected area set aside for conservation of wildlife, plant, animal and microorganism resources, and the traditional life of the tribals living in that area.
Question: What are endemic species?
Answer:Endemic species are those species of plants and animals that are found exclusively in a particular area and are not naturally found anywhere else. For example, the Indian giant squirrel and flying squirrel are endemic to the Pachmarhi Biosphere Reserve area.
Question: Why did IUCN prepare the Red Data Book?
Answer: IUCN prepared Red Data Book to highlight those animals who are threatened with extinction, with the aim of promoting their conservation. Those threatened with extinction.
Question: Into what categories are the species listed in Red List and Red Data Book classified?
Answer: The IUCN maintains a Red List, which is a compilation of endangered wildlife species. The Red Data Book species are classified into different categories depending on the risk of extinction, for example, ‘extinct’, ‘endangered’, ‘vulnerable’.
