Answer in brief. - Why should we conserve biodiversity?
- Protected forests are also not completely safe for wild animals. Why?
- Some tribals depend on the jungle. How?
- What are the causes and consequences of deforestation?
- What is Red Data Book?
- What do you understand by the term migration?
- Why should we conserve biodiversity?
- Protected forests are also not completely safe for wild animals. Why?
- Some tribals depend on the jungle. How?
- What are the causes and consequences of deforestation?
- What is Red Data Book?
- What do you understand by the term migration?
Solution and Explanation
(a) Biodiversity refers to the number and variety of various life forms such as plants, animals, and micro-organisms in an area. Plants and animals depend on each other for survival. This means that the destruction of either of the two will affect the life of the other. Hence, we need to conserve biodiversity to maintain the balance of nature.
(b) Protected forests are not completely safe for wild animals because people who live near or adjacent to forests use resources from forests to fulfil their own requirements. In this process, wild animals are killed and sold for lucrative amounts of money.
(c) Tribals gather food, fodder, and fallen branches of trees from forests. Hence, they depend on forests for their daily requirements.
(d) Causes of deforestation:
- Forests are cleared for accommodating expanding urban areas and for fulfilling their ever-increasing requirements.
- Forests are destroyed to clear land for crops and cattle grazing.
- Trees are cut down to be used for firewood.
Consequences of deforestation:
- Soil erosion
- Loss of biodiversity
- Floods and droughts
- Climate change due to global warming
- Disruption of water cycle
(e) Red Data Book is a source book that maintains an international list of all endangered animal and plant species. This book is maintained by IUCN (International Union for Conservation of Nature and Natural resources).
(f) Migration refers to the movement of an organism or a group of organisms from its natural habitat to another place at a particular time every year. Organisms migrate from one place to another to avoid inhabitable climatic conditions or for breeding.
Top Questions on Conservation of Forest and Wildlife
- Which Asian country recorded a 27% rise in tiger population since 2015?
- TS LAWCET - 2024
- Current Affairs
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- Which of the following states in India is known for conservation of Rhododendun ?
- CUET (PG) - 2023
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- Match List I with List IIChoose the correct answer from the options given below:
List I
(Biosphere Reserve)List II
(States)A. Agasthyamalai I. Madhya Pradesh B. Nanda Devi II. Odisha C. Panchmarhi III. Tamil Nadu D. Similipal IV. Uttarakhand - CUET (PG) - 2023
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- Complete the word puzzle.
Down
1. Species on the verge of extinction.
2. A book carrying information about endangered species.
5. Consequence of deforestation.
Across
1. Species which have vanished.
3. Species found only in a particular habitat.
4. Variety of plants, animals and microorganisms found in an area.
- CBSE Class VIII
- Science
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- What will happen if.
- we go on cutting trees.
- the habitat of an animal is disturbed.
- the top layer of soil is exposed
- CBSE Class VIII
- Science
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Questions Asked in CBSE Class VIII exam
Fill in the blanks using the correct form of the verbs in brackets.
My little sister is very naughty. When she ____ (come) back from school yesterday, she had _____(tear) her dress. We _____(ask) her how it had _____(happen). She ______(say) she _____ _____ (have, quarrel) with a boy. She _____ _____ (have, beat) him in a race and he _____ ____ (have, try) to push her. She _____ ____ (have, tell) the teacher and so he _____ _____ (have, chase) her, and she _____ _____ (have, fall) down and _____ _____ (have, tear) her dress.
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- The Best Christmas Present in the world
- Subtract 4p2q – 3pq + 5pq2 – 8p + 7q – 10 from 18 – 3p – 11q + 5pq – 2pq2 + 5p2q
- CBSE Class VIII
- Addition and Subtraction of Algebraic Expressions
- When he felt the earthquake, do you think Ignesious immediately worried about a tsunami? Give reasons for your answer. Which sentence in the text tells you that the Ignesious family did not have any time to discuss and plan their course of action after the tsunami struck?
- CBSE Class VIII
- The Tsunami
Underline the verbs and arrange them in two columns, Past and Earlier past.
(a) My friends set out to see the caves in the next town, but I stayed at home, because I had seen them already.
(b) When they arrived at the station, their train had left. They came back home, but by that time I had gone out to see a movie!
(c) So they sat outside and ate the lunch I had packed for them.
(d) By the time I returned, they had fallen asleep!
Past Earlier Past - CBSE Class VIII
- The Best Christmas Present in the world
Change the following sentences into indirect speech.
(i) First man: We must educate our brothers. Second man: And try to improve their material conditions. Third man: For that we must convey our grievances to the British Parliament. The first man said that _____ _____ The second man added that _______ ________ The third man suggested that ________ ________
(ii) First soldier: The white soldier gets huge pay, mansions and servants. Second soldier: We get a pittance and slow promotions. Third soldier: Who are the British to abolish our customs? The first soldier said that _______ __________ The second soldier remarked that _______ ________ The third soldier asked _______ _______
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- Glimpses of the past
Concepts Used:
Biodiversity and Conservation
The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.
Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.