{"id":3650,"date":"2023-01-02T05:18:57","date_gmt":"2023-01-02T05:18:57","guid":{"rendered":"https:\/\/theexampillar.com\/ncert\/?p=3650"},"modified":"2023-01-31T07:01:26","modified_gmt":"2023-01-31T07:01:26","slug":"ncert-solutions-class-8-science-chapter-7-conservation-of-plants-and-animals","status":"publish","type":"post","link":"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-science-chapter-7-conservation-of-plants-and-animals\/","title":{"rendered":"NCERT Solutions Class 8 Science Chapter 7 Conservation of Plants and Animals"},"content":{"rendered":"

NCERT Solutions Class 8 Science\u00a0<\/span><\/h2>\n

The NCERT Solutions in English Language for Class 8 Science Chapter – 7 (Conservation of Plants and Animals) <\/strong>has been provided here to help the students in solving the questions from this exercise.<\/span><\/p>\n

Chapter – 7 (Conservation of Plants and Animals)<\/span><\/h2>\n

1. Fill in the blanks.
\n<\/strong>(a)<\/strong> A place where animals are protected in their natural habitat is called a _________.
\n(b)<\/strong> Species found only in a particular area are known as _______.
\n(c)<\/strong> Migratory birds fly to faraway places because of __________ changes.<\/span><\/p>\n

Answer –
\n<\/strong>(a) A place where animals are protected in their natural habitat is called a\u00a0sanctuary<\/span>.
\n<\/b>(b) Species found only in a particular area are known as\u00a0endemic<\/strong><\/span>.
\n(c) Migratory birds fly to faraway places because of\u00a0climatic<\/strong><\/span>\u00a0changes.<\/span><\/p>\n

2. Differentiate between the following.
\n(a) Wildlife sanctuary and biosphere reserve<\/strong>
\nAnswer –
\n<\/strong><\/span><\/p>\n\n\n\n\n\n\n\n\n
Wildlife sanctuary<\/strong><\/span><\/td>\nBiosphere reserve<\/strong><\/span><\/td>\n<\/tr>\n
Wildlife sanctuaries are the places where wild animals are protected in their natural habitats. In these areas hunting is prohibited.<\/span><\/td>\nBiosphere reserves are the areas tjat are used to conserve biodiversity. These areas contain many national parks and wildlife sanctuaries.<\/span><\/td>\n<\/tr>\n
These areas provide protection to wild animals.<\/span><\/td>\nThese areas help in the conservation of various types of plants, animals and microorganisms.<\/span><\/td>\n<\/tr>\n
In these areas, tourism is permissible.<\/span><\/td>\nIn these areas, no tourism is permissible.<\/span><\/td>\n<\/tr>\n
Boundaries are not fixed for wildlife sanctuaries.<\/span><\/td>\nBoundaries are fixed for biosphere reserves.<\/span><\/td>\n<\/tr>\n
Example \u2013<\/strong> Chinnar Wildlife sanctuary in Kerala<\/span><\/td>\nExample \u2013<\/strong> Pachmarhi biosphere reserve<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

(b)<\/strong> Zoo and wildlife sanctuary<\/strong>
\nAnswer –
\n<\/strong><\/span><\/p>\n\n\n\n\n\n\n\n\n
Zoo<\/strong><\/span><\/td>\nWildlife sanctuary<\/strong><\/span><\/td>\n<\/tr>\n
Zoo is an area where animals are kept for public exhibition.<\/span><\/td>\nWildlife sanctuaries are the areas where wild animals are protected in their natural habitats. Here hunting or poaching practices are prohibited.<\/span><\/td>\n<\/tr>\n
Zoos are the small areas where animals are kept inside the cages.<\/span><\/td>\nWildlife sanctuaries are the large areas where animals are free to move anywhere.<\/span><\/td>\n<\/tr>\n
Zoo contains the animals that are brought from the different parts of the world for exhibition.<\/span><\/td>\nA wildlife sanctuary contains the animals that are found locally in that area.<\/span><\/td>\n<\/tr>\n
Zoos provide artificial habitats to the animals.<\/span><\/td>\nAnimals are protected in their natural habitats.<\/span><\/td>\n<\/tr>\n
Example \u2013<\/strong> Delhi Zoo<\/span><\/td>\nExample \u2013<\/strong> Sanjay Gandhi wildlife sanctuary<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

(c) Endangered and extinct species<\/strong>
\nAnswer –
\n<\/strong><\/span><\/p>\n\n\n\n\n\n\n\n
Endangered species<\/strong><\/span><\/td>\nExtinct species<\/strong><\/span><\/td>\n<\/tr>\n
Endangered species are those species who are facing a very high risk of extinction.<\/span><\/td>\nExtinct species are those species which get completely extinct.<\/span><\/td>\n<\/tr>\n
The members of these species are living today but their number has decreased.<\/span><\/td>\nThere are no surviving individuals of these species.<\/span><\/td>\n<\/tr>\n
We can take some measures to protect endangered species from extinction.<\/span><\/td>\nWe can\u2019t do anything as they are already extinct.<\/span><\/td>\n<\/tr>\n
Example \u2013<\/strong> African wild dog, tiger, Royal Bengal tiger, etc.<\/span><\/td>\nExample \u2013<\/strong> Dodo, dinosaurs, etc.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

(d) Flora and fauna<\/strong>
\nAnswer –\u00a0<\/strong><\/span><\/p>\n\n\n\n\n\n\n\n\n
Flora<\/strong><\/span><\/td>\nFauna<\/strong><\/span><\/td>\n<\/tr>\n
Flora refers to the plant life that can be found in a specific region.<\/span><\/td>\nFauna refers to animal life that can be found in a specific region.<\/span><\/td>\n<\/tr>\n
It is automatically and naturally grown greenery of a region<\/span><\/td>\nIt includes all types of organisms from tiny bacteria to giant animals.<\/span><\/td>\n<\/tr>\n
Flora can make their own food with the help of photosynthesis (the process by which plants make their own food with the help of water, carbon dioxide and sunlight).<\/span><\/td>\nFauna can\u2019t make their own food. They depend on the plants for their food.<\/span><\/td>\n<\/tr>\n
Flora is studied in botany.<\/span><\/td>\nFauna studied in Zoology.<\/span><\/td>\n<\/tr>\n
Flora can\u2019t move i.e. remains at one place.<\/span><\/td>\nAnimals can move from one place to another.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3. Discuss the effects of deforestation on the following.
\n<\/strong>(a)<\/strong> Wild animals
\n(b)<\/strong> Environment
\n(c)<\/strong> Villages (Rural areas)
\n(d)<\/strong> Cities (Urban areas)
\n(e)<\/strong> Earth
\n(f)<\/strong> The next generation<\/span><\/p>\n

Answer –
\n<\/strong>(a) Wild animals – <\/strong>Trees are the habitats as well as sources of food for the wild animals. Deforestation leads to the destruction of the natural habitats of wild animals.<\/span><\/p>\n

(b) Environment – <\/strong>Deforestation increases the temperature and pollution level of the environment. With the increase in the carbon dioxide level and a decrease in the oxygen level, it gives rise to global warming. It also lowers the level of ground water. Moreover, deforestation decreases the soil fertility and so, increases the chances of natural calamities.<\/span><\/p>\n

(c) Villages (Rural areas) – <\/strong>The decline in rainfall, the decrease in soil fertility, and the chances of natural disaster affect the village life.<\/span><\/p>\n

(d) Cities (Urban areas) – <\/strong>Deforestation result in global warming. It also results in the increase in the level of pollution. Hence, deforestation affects the life in cities.<\/span><\/p>\n

(e) Earth – <\/strong>Deforestation decreases the fertility of soil. It changes the physical properties of soil. All these changes result in desertification.<\/span><\/p>\n

(f) The next generation – <\/strong>Deforestation will majorly affect the life of next generation. The next generation will face problems at every step. Climatic conditions will be adversely affected. There will be scarcity of food and clean environment. Next generation won\u2019t be able to see most of the animal species due to habitat loss.<\/span><\/p>\n

4. What will happen if
\n<\/strong>(a) we go on cutting trees
\n<\/strong>Answer –\u00a0<\/strong>Trees provide shelter to animals and birds. If trees are cut, animals and birds will lose their habitat. Trees are sources of fruits, sheds, wood. There will be a scarcity of such resources if trees are cut. Global warming will occur. Groundwater reserves also will be reduced.<\/span><\/p>\n

(b) the habitat of an animal is disturbed
\n<\/strong>Answer –\u00a0<\/strong>If the habitat of an animal is disturbed, the survival of animals is endangered. It will ultimately lead to its extinction.<\/span><\/p>\n

(c) the top layer of soil is exposed<\/strong>
\nAnswer –\u00a0<\/strong>Removal of the top layer of the soil exposes the lower, hard, and rocky layers. The top layer is more fertile and contains humus. If the top layers are affected by any means, the fertility of the soil is lost and this will eventually lead to desertification.<\/span><\/p>\n

5. Answer in brief.
\n<\/strong>(a)<\/strong> Why should we conserve biodiversity?<\/strong>
\nAnswer –\u00a0<\/strong>Conservation of biodiversity is essential because of the following reasons:
\n(i)<\/strong> Biodiversity maintains balance in the ecosystems.
\n(ii)<\/strong> Wild animals and plants provide a variety of commodities.
\n(iii)<\/strong> Wildlife is needed for breeding programmes in agriculture, horticulture, sericulture, apiculture, etc. Any damage to biodiversity will threaten the whole support system and will be a threat\u00a0to human existence. Therefore, biodiversity needs to be conserved.<\/span><\/p>\n

(b) Protected forests are also not completely safe for wild animals. Why?
\n<\/strong>Answer –\u00a0<\/strong>Since capturing and killing of animals by poachers is still rampant in protected forests and areas, so they are not safe for wild animals.<\/span><\/p>\n

(c) Some tribals depend on the jungle. How?
\n<\/strong>Answer – <\/strong>Some tribes depend on the jungle for the fulfillment of their basic needs of life, such as food, medicine, clothing, shelter, etc.<\/span><\/p>\n

(d) What are the causes and consequences of deforestation?<\/strong>
\nAnswer – <\/strong>The causes of deforestation may be the following:<\/span><\/p>\n