INTEXT QUESTIONS 19.1
1. What does biodiversity mean?
Answer: Biodiversity means the variety of living beings found on Earth.
2. Define (i) species, (ii) biosphere (iii) ecosystem.
Answer: (i) Species : Group of interbreeding populations
(ii) Biosphere : Livable part of earth
(iii) Ecosystem: an area whose inmates interact with each other and also the physical sorroundings.
3. Name the three levels of biodiversity.
Answer: The three levels of biodiversity are ecological diversity, species diversity and genetic diversity.
4. What is meant by biodiversity hotspots?
Answer: Hot spots are those areas of a country where some typical plants and animals (organisms) are exclusively present.
INTEXT QUESTIONS 19.2
1. What is meant by classification?
Answer: Classification means the process of grouping living organisms into different categories based on their similarities and differences.
2. How has classification made study of diversity possible?
Answer: Classification has made the study of diversity possible by grouping the enormous variety of living organisms into categories, making their study easier and systematic.
3. Name the three domains into which all the organisms of the world are categorised
Answer: The three domains into which all organisms of the world are categorised are archaea ,
bacteria and eukarya
4. Name the five kingdoms of life and mention the three features on which this classification is based.
Answer: The five kingdoms of life are Monera, Protoctista (Protista), Fungi, Plantae and Animalia .
5. Study the table 19.2 on kingdoms of life and fill in the names of kingdom at A to E in the flow chart given below :
Photo
Answer: A= Monera, B= Protoctista, C= Fungi, D=Plantae, E= Animalia
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