Define and understand the following term | Class 11 Biology Chapter The Living World, The Living World NCERT Solutions

Current NCERT chapter

Academic session 2026-27, Chapter 1 in the current curriculum.

Welcome to the NCERT Solutions for Class 11 Biology - Chapter The Living World. This page offers a step-by-step solution to the specific question from Exercise 1, Question 9: Define and understand the following terms:
(i) Phylum
(ii) Class
(iii) Family
(iv) Order
(v) Genus. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 9: Define and understand the following terms:
(i) Phylum
(ii) Class
(iii) Family
(iv) Order
(v) Genus
Answer:

(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.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about The Living World.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Comments

  • shreebhavani
  • Dec 12, 2019

Awesome easy notes

  • Umakant Rajwade
  • Jul 03, 2019

Thanqqqq u

  • Sneha
  • Jun 17, 2019

Thnku

  • Torsha
  • Jun 13, 2019

Thnx a lot...☺️

  • Sayujya
  • May 31, 2019

It is very easy to understand

  • SYEDA ROSHNI
  • May 12, 2019

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  • SYEDA ROSHNI
  • May 12, 2019

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  • Pooja
  • Jan 26, 2019

Amazing

  • Ansh
  • Dec 08, 2018

Its helpful

  • Ankur
  • Sep 28, 2018

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Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 9: Define and understand the following terms: (i) Phylum (ii) Class (iii) Family (iv) Order (v) Genus....

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