NIOS Class 10 Science & Technology Chapter 19 Solution

NIOS Class 10 Science & Technology Chapter 19 Solution – Classification Of Living Organisms

NIOS Class 10 Science & Technology Solution Chapter 19 Classification Of Living Organisms. NIOS Class 10 Science & Technology Chapter 19 Question Answers Download PDF. NIOS Class 10 Science Notes.

NIOS Class 10 Science & Technology Chapter 19 Solution

Board NIOS
Class 10th (Secondary)
Subject Science and Technology (219)
Topic Question Answer, Solution, Notes


CHAPTER: – 19.




1) What does biodiversity mean?

Ans: – The wide variety of animal and plant in a area is known as biodiversity.


2) Define (i) species, (ii) biosphere (iii) ecosystem.

Ans: – Species: Group of populations of same category.

Biosphere: Livable part in the earth plat and animal lives.

Ecosystem: an area which has an interact with each other.


3) Name the three levels of biodiversity.

Ans: –The first is Ecological diversity and second is species diversity third is genetic diversity


4) What is meant by biodiversity hotspots?

Ans: – In a particular area where any one types of species is present in maximum number then that area is known as biodiversity hotspot. The Maximum number of any species present in that area.




1) What is meant by classification?

Ans: – Classification is the way of keeping the animal and plant according to their respective group or species.


2) How has classification made study of diversity possible?

Ans: – There is no limit of possibility of diversity.


3) Name the three domains into which all the organisms of the world are categorised.

Ans: – Archaea, Prokarya, Eukarya is the three domains in which all the organisms of the world are categorised.


4) Name the five kingdoms of life and mention the three features on which this classification is based.

Ans: – The five kingdom of life is Monera, protista, fungi, Plante, animalia.



1)Find out the scientific name of the following:

Frog, cat, China rose, onion.

You may get them from someone in your neighbourhood who knows Biology orfrom internet or some Biology book.

Ans: –Frog : – Ranatrigina,

Cat: Felisdomestica,

China rose: – Hibiscusrosasinensis

Onion: – Alliumcepa.

2)In the following table, fill in plus (+) for present and minus (-) for absent toshow the difference between plants and animals.

Ans: –

Features plant Animal
Chlorophyll +
muscles +
Nerves +
locomotion +
Leaves and root +
Mouth and anas +


3)See the pictures of the two arthropods shown below. Mark one similarity andone difference Spider  andHoneybee.

Ans: – Similarity is jointed legs, thorox and abdomen.

Differences is pairs of legs is absent.


4)Which out of ABCD is

  1. Fungus b. Fern c. Moss d. Algae.

Ans: – A= Algae, B= Moss, C=Fungus, D=Fern.




1)Define biodiversity. Mention its three levels and briefly explain them.

Ans: – There are three types of biodiversity which are genetic biodiversity, species biodiversity and ecosystem biodiversity. According to the different organic animal and plant we see genetic biodiversity and species biodiversity is different types of plant and animal, ecosystem biodiversity is the different types of ecosystem present in an area.

2)What are the global and Indian patterns of biodiversity? What do you meanby a ‘hot spot’ of diversity?

Ans: – The biodiversity is the presence of different types of animals and plant in a particular area. If there is a present of much amount of particular plant species then this area is known as hot spot.

3)Name the three domains of life and state one distinguishing features of each.

Ans: – There are three types of domains which are eukaryote, bacteria, archaea. The small living particles is known as bacteria. The unicellular elements are known as eukaryote.

4)Name the five kingdoms of life and state one feature of each of the kingdomswhich differs from that of the others.

Ans: –

Monera protista Fungi Plante animalia
Unicellular, prokaryotes Eukaryotes Eukaryotes Eukaryotes Eukaryotes, multicellular


5)Give an account of the classification of Kingdom Plantae into its divisions.Cite examples.

Ans: – Plante : – Eukaryotes and cellulose is present. Example are algae, moss, fern etc.

6)State the difference between chordates and non chordates.

Ans: –

Chordates Non chordates
Notochord is present Notochord is absent
Post anal tail is present Post anal tail is absent.


7)Name the phyla to which the following belong: wolf, earthworm, sponge,jelly fish, sparrow, butterfly, starfish, snail, tape worm, round worm.


Ans: –

Name phylum
wolf Chordates
Earthworm Annelida
Sponge Porifera
Jelly fish Cnidaria
sparrow Chordates
Butterfly Arthopoda
Starfish Echinoderms
snail Mollusca
Tape worm Platyhelminthes
Round worm Nematodes


8)To which class of chordates do the following belong? Justify your inclusioninto the class by stating any one characteristic feature. Crow, lion, cobra,flying frog, shark, fresh water fish.

Ans: – Cow: – Aves, lion: – Mammalia, cobra: – reptile, flying frog: – Amphibian, shark: – Chondrichthyes, fresh water fish: – osteichithyes.

9)Write three sentences on why we need to classify and give scientific names toorganisms.

Ans: – Need for the classifying and scientific names –

  • For separation from other species.
  • To keep similar in same place.
  • To understand about different at a glance.


10) Why does biodiversity need to be conserved?

Ans: – The biodiversity must be conserved as in a biodiversity there are different types of specific of species of animal and plat are present. So, to protect this species we need to conserved this.


11) State three ways by which biodiversity may be conserved?

Ans: – The way of conserving the biodiversity is –

  • There should be strict law for protection.
  • Public should be aware of there important.
  • Should have protected region.


12) List 10 ways in which organisms help each other survive in nature. What message can you derive from their interdependence?

Ans: – The way of survive each other is-

  • The medical benefit.
  • Their importance in ecosystem.
  • There should be special law of protection.
  • Protected region.
  • Ecological balance.


14) Write in a paragraph on “what would happen if living beings did not have scientific names and were not grouped.” Mention at least five consequences.

Ans: – With the help of the scientific name we can place any species according to their particular places which help to understand the different types of species. Like wise the plant should keep in their respective class and animal should kept in their respective class.


15)You find some boys pelting stones at a monkey sitting on a tree. Write five sentences which can dissuade those boys.

Ans: – we should aware the boy about the affect of this stone that may hit the monkey. The monkey also has importance in the society. All the animal should be treated equally. The importance of the animal in the society.

Updated: February 25, 2022 — 11:07 am

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