Kerala SCERT Class 8 Science Chapter 12 Why classification Question Answer Solution Here. Kerala Board Class 8 Students can find Here 12th Chapter Why classification Notes provide by our Teacher. Important Question Answer from Chapter 12 Why classification.
- Board- Kerala Board.
- Class – 8.
- Subject – Basic Science Part 2
- Chapter – 12.
- Chapter Name – Why classification.
- Topic – Question Answer Solution.
Answer the following questions shortly.
1) What is taxonomy?
Ans- Taxonomy is the branch of biology that identifies organisms, classifies them on the basis of similarities and differences and names them scientifically
2) Give the taxonomic hierarchy proposed by Linnaeus?
Ans- The taxonomic hierarchy proposed by Linnaeus is Kingdom – phylum- class- order- family- genus- species.
3) What are binomial nomenclature ?
Ans- Binomial nomenclature was proposed to solve the difficulties arising out of an organism being known by various names in different languages and regions. This is a commonly accepted scientific method of naming. Binomial nomenclature is the scientific method of naming by joining two words.
4) Give the name if five kingdom classification.
Ans the kingdoms are-
monera
Protista
Fungi
Plantae
Animalia
5) Give scientific names of Tiger, Lion Cat and Dog.
Scientific name Animal
Panthera tigris tiger
Panthera leo Lion
Feliscatus Cat
CAnis lupus familiarizes dog
Answer the following questions.
1) Discuss about five kingdom system.
Ans- there are five kingdom system is present which as following-
kingdom | Peculiarities |
example |
Monera | Unicellular organisms without nucleus | Bacteria |
Protista | Unicellular organism with a nucleus | Amoeba |
Fungi | Non- motile, heterotorpic unicellular/multicellualar organims | Mushrooms |
Plantae | Autotophic , multicellular , non- motile organism | Plants |
Animalia | Heterotrophic multicellular organism that have the capacity of locomotion | Animlas This are the classification of five kingdom system and their examples. |
2) Discuss about binomial nomenclature in detail.
Ans- carl Linnaeus was proposed binomial nomenclature. Binomial nomenclature was proposed to solve the difficulties arising out of an organism being known by various names in different languages and regions. This is a commonly accepted scientific method of naming. Binomial nomenclature is the scientific method of naming by joining two words.
The first word of the scientific name indicates the genus and the second word indicates the species. By this method the scientific name of an organism is the same all over the world . according to this the scientific name of human beings is Homo sapiens
3) Give Taxonomic hierarchy of Mango tree/ plant.
Ans-
Kingdom- Plantae
Phylum- Angiopermophyta
Class- Dicotyledone
Series- Sapindales
Family- Anacardiaceae
Genus- Mangifera
Species- indica
4) Discuss about the keys for identification.
Ans- taxonomic keys are the scientific indicators used for identifying and classifiying plants and animals. One of the most important taxonomic keys is the dichotomous key. Each indicator in this key has two possibilities of selection. By choosing the pecularties of the organism to be identified and by proceeding systematically one can identify and
classify the organism. Illustration 12.1 is dichotomous key. The taxonomic keys are continuously revised by including peculiarities of newly identified organism. this are the keys for identification.
Answer the following question in brief.
1) Discuss brief about the scientist who contribute in the history of taxonomy.
Ans- Taxonomy is the branch of biology that identifies organisms, classifies them on the basis of similarities and differences and names them scientifically. So in the history of this taxonomic system there are various scientist who have made valuable contributions in the history of taxonomy which are following-
a) Aristotle ( Greece)- the father of biology. He calssified organism as those with red blood cells and those without red blood cells.( B.C 384-322)
b) Charakan (India) – the father of Ayurveda. He wrote the treatise Charaka Samhita by including in it around 200 plants and animals. A.D 1st centuary
c) Theophrastus (Greece) – the father of Botony. He classified plants into annuals , biennials and perennials. (B.C- 371- 287)
d) John Ray (England)- Recorded more than 18000 plants in the book Historia Generalis Plantarum. Used the term species for the first time. (A.D- 1627- 1705)
e) Carl Linnaeus (Sweden)- the father of morden taxonomy. Suggested the taxonomic hierarchy. Proposed binomial nomenclature, the scientific naming method for organism. (AD 1707-1778)
This scientist are involve in the history of taxonomy.
Choose the correct answer.
1) —— is the father of biology.
a) Aristotle
b) Charakan
c) Carl Linnaeus
d) None of the above
Ans- a) Aristotle
2) What is the Genus of mango tree?
a) Plantae
b) Indica
c) Mangifera
d) None of the above
Ans- c) Mangifera
3) There are —- kingdom systems are present.
a) Five
b) Six
c) Seven
d) Four
Ans- a) five
4) The first name of the scientific name indicates—?
a) Species
b) Class
c) Genus
d) Phylum
Ans- c) genus
5) The binomial nomenclature was first proposed by—–?
a) Carl Linnaeus
b) John ray
c) Therophrastus
d) Aristole
Ans- a) Carl Linnaeus.
Chapter no 12 Why classification
For more updates, Follow our Page ⇒ Net Explanations