Chhattisgarh State Board Class 9 Science Chapter 1 Biodiversity and Classification Exercise Multiple Choice, Fill in the Blanks, Questions and Answers here.
Chhattisgarh State Class 9 Science Chapter 1 Solution
1) Choose the correct option.
(i) In classification –
(a) Identifying characters is not essential
(b) Members of a class share maximum similarities
(c) Members of a class do not have similarities
(d) There is no basis.
Ans: – b) member of a class share maximum similarities.
(ii) A dicotyledonous plant is-
(a) Onion (b) Grass
(c) Banana (d) Mustard.
Ans: – a) Onion.
(iii) A character not similar to birds and fishes is-
(a) Presence of body compartments (b) Egg laying
(c) Presence of vertebrae (d) Presence of wings.
Ans: – d) presence of wings.
2) Fill in the blanks-
(i) It is important to select a basis for grouping and ………….. classify……………….
(ii) Prokaryotic organisms are included in …. Monera…………………… kingdom.
(iii) ………..RH WHITTAKER……………… gave the 5-kingdom classification.
3) Write two characteristic features of Kingdom Fungi that distinguish it from other kingdoms.
Ans: – The characteristics of Fungi is –
- It is multicellular.
- Cell wall made up of chitin.
- Heterotrophic mode of nutrition.
4) Write two differences between amphibians and reptiles.
Ans: –
Amphibians | Reptiles |
Their skin is moisture in nature. | Mostly dry skin is seen. |
Lay eggs in water. | Lay eggs in land. |
Eggs are covered with gel. | Eggs are covered with hard protective cell. |
5) Cell wall is found in organisms of kingdom fungi yet they are not included under plant kingdom. Why is it so?
Ans: – Although the cell wall is present in the fungi but it doesn’t include in plant kingdom. There are certain characteristics that differs it from plant that is heterotrophic mode of nutrition, absent of chlorophyll etc.
6) What is the basis of keeping snake and tortoise in the same group?
Ans: – The reason behind keeping the snake and tortoise in the same group is –
- Both have four chambered hearts.
- Respiration happens in both of them through the lungs.
- Both are cooled blooded.
7) Why do we need classification?
Ans: – Classification is very necessary in biodiversity. For keeping the different character showing animal and plant are in their respective group. So, to identify the same type animal and plant we classifieds the them.
8) What do you understand by binomial nomenclature? How do we write the names of organisms inthis system? Give at least two examples.
Ans: – The binomial nomenclature is the representation of the different type of animal and plant according to their genus and species.
The rules in binomial nomenclature are in the form of writing the names of genus and species like the first part is the genus name and the second part is the species name. And we must follow it that the starting word must be in capital and the second starting word will be in small letter.
Example: – Homo sapiens (human); Mangifera indica (mangoes).
9) What are the similar characters of bats and rats?
Ans: – There’s some similarities in both bats and rats like –
- Both are warm blooded.
- Present hair on skin.
- Anytime in life notochord can be seen.
10) What is the basis of five kingdom classification? What are the kingdoms? Write in detail about them.
Ans: – The five-kingdom classification are given by R H Whittaker in 1969. The basics of five kingdom classification is the ways of their life or the genetic in this biodiversity. The five classifications are –
- Monera
- Protista
- Fungi
- Plantae
- Animalia
Monera | Protista | Fungi | plantae |
Animalia |
Prokaryotic, nucleotide absent, Heterotrophic (example: – Bacteria) | Eukaryotic, membrane present, heterotrophic and autotrophic mode of nutrition (example: – plant, fungus, animal) | Eukaryotic,cell wall present, heterotrophic mode of nutrition (example: – various fungus) | Eukaryotic, cell wall made up of cellulose, autotrophic mode of nutrition (example: – algae, moss, fern, gymnosperms etc) | Eukaryotic, cell wall is absent, membrane is present, mostly heterotrophic mode of nutrition, example: – all animal. |
11) “If the basis changes, the system of classification will also change.” Justify this statement.
Ans: – The different plant and animal are kept in different groups according to their properties. The classification is the way to distribute the animal and plant in our biodiversity for identification. Is there is some similarities in them we kept them in their respective group.so, the basic of the species is classified it for giving a certain place in the chart.
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