Class 11 Biology - Chapter The Living World NCERT Solutions | Define and understand the following term
Define and understand the following terms:
(i) Phylum
(ii) Class
(iii) Family
(iv) Order
(v) Genus
(i) Phylum
Phylum is second highest unit of classification after Kingdom. It includes one or more related classes of animals. In plants, instead of phylum, the term ‘division’ is used.
(ii) Class
Class is a taxonomic group consisting of one or more related orders. For example, the class, Mammalia, includes many orders like Primata (Man), Carnivora(Lim, tiger) etc.
(iii) Family
Family is a taxonomic group containing one or more related genera eg. Family hominidae contains Apes, Monkeys and Man. In plants, families are categorized on the basis of vegetative and reproductive features.
(iv) Order
Order is a taxonomic group containing one or more families. For example, the order, carnivora, includes many families.
(v) Genus
Genus is a taxonomic group including closely related species. For example, the genus, Solanum, includes many species such as nigrum, melongen a, tuberosum, etc.
More Questions From Class 11 Biology - Chapter The Living World
- Q:- Why are living organisms classified?
- Q:-
Define a taxon. Give some examples of taxa at different hierarchical levels.
- Q:- How is a key helpful in the identification and classification of an organism?
- Q:- Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
- Q:- Can you identify the correct sequence of taxonomical categories?
(a) Species → Order → Phylum → Kingdom
(b) Genus → Species → Order → Kingdom
(c) Species → Genus → Order → Phylum - Q:- What do we learn from identification of individuals and populations?
- Q:- Why are the classification systems changing every now and then?
- Q:- Given below is the scientific name of Mango. Identify the correctly written name. Mangifera Indica Mangifera indica
- Q:- What different criteria would you choose to classify people that you meet often?
- Q:- Try to collect all the currently accepted meanings for the word species. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand and bacteria on the other hand.
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- Q:-
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(b) Schleiden and Schwann formulated the cell theory.
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I IS VERY VERY EASY FOR ME TO UNDERSTAND WRITE ðððââ
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