NCERT Solutions for Class 9 Science Chapter 7: Diversity In Living Organisms

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The NCERT Solutions for Class 9 Science have been provided in this article. Class 9 Science Chapter 7 Diversity In Living Organisms covers the folloiwng important topics:

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NCERT Solutions for Class 9 Science Chapter 7

NCERT Solutions

Important Topics for Class 9 Science Chapter 7 Diversity in Living Organisms

Diversity in Living Organisms can be defined as the presence of different organisms within the same ecosystem to lead equilibrium. All the living organisms are made up of many organic and inorganic compounds and each living organism has a different body structure formed by the cells in its body. This gives arise to diversity in the living world and different classes under which different organisms are classified.

Introduction to Taxonomy

Taxonomy is a method of classifying and naming species on basis of their resemblance and contrast. Organism are further grouped as per their domain, kingdom, phylum, class, order, family, genus, and species. These are the major levels of Taxonomy.

Example: What are the types of classification found in Taxonomy?

Solution: The types of classification found in Taxonomy are:

Artificial Categorization System
Natural Categorization System
Phylogenetic System of Classification

Classification of Animal Kingdom

Every species, which has been discovered until today, can be further classified into five kingdoms and one among them is the Kingdom Animalia or simply, Animal Kingdom.

Example: How is Animal Kingdom classified?

Solution: One key mode of classification of animals is considering whether there is a presence or absence of the notochord. Accordingly, Animal Kingdom is split and classified into two major groups:

Chordates
Non-chordates.

Evolution

Evolution is a theory that explains the growth and change in the characteristic properties of a species as it shifts from one generation to another. It includes the change and growth of species including plants, animals, humans and more.

Living Organisms are classified according to their characteristics:

Size
Cellularity
Habitat
Body organization

Also Read:

Chapter Related Links
Protochordata	Platyhelminthes	Coelenterata (Cnidaria)
Mammalia	Classification of Animal Kingdom	Heredity and Evolution
Two Kingdom Classification	Biological Classification	Terrestrial Ecosystem
Animalia Lower Invertebrates	Animal Kingdom Animalia Subphylum	Genus

Read More:

Important Science Study Guides
Difference between in physics	Periodic Table	Difference between in biology
Difference between in chemistry	Named Reactions	Physics Constants

CBSE X Related Questions

1.
Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
Gamete carrying X chromosome from male parent.
Gamete carrying Y chromosome from male parent.
- (ii) and (iii)
- (i) only
- (i) and (iii)
- (iii) only
View Solution
2.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
View Solution
3.
The gases evolved on heating lead (II) nitrate crystals are :
- NO and \( O_2 \uparrow \)
- \( N_2 \) and \( NO_2 \)
- \( NO_2 \) and \( H_2 \)
- \( NO_2 \) and \( O_2 \)
View Solution
4.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes
- (i), (iii) and (iv)
- (i), (ii) and (iii)
- (i), (ii), (iii) and (iv)
- (ii), (iii) and (iv)
View Solution
5.
The natural sources of oxalic acid, lactic acid and methanoic acid respectively are:
- tomato, curd, ant-sting
- tomato, orange, nettle-sting
- orange, milk, ant-sting
- orange, sour milk, nettle-sting
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6.
Which of the following group is not 'biodegradable'?
- Vegetable peels, dead leaves, paper
- Cow dung, leather bag, water
- Polythene bag, rubber band, ball pen
- Paper, fruits, bones
View Solution