Conservation of Plants and Animals - Exemplar Solutions 1
NCERT Exemplar Solutions
CHAPTER 7
Conversation of Plants and Animals
MULTIPLE CHOICE QUESTIONS
1. Wild buffalo is an endangered species because
(a) its population is diminishing
(b) it has become extinct
(c) it is found exclusively in a particular area
(d) its poaching is strictly prohibited
(b) it has become extinct
(c) it is found exclusively in a particular area
(d) its poaching is strictly prohibited
Ans. (a) Species of plants or animals diminishing to a level at which they may get extinct are known as endangered species. Population of wild buffalo too is diminishing tremendously.
2. Which one of the following changes may occur due to desertification?
(a) Decrease in atmospheric temperature.
(b) Increase in water holding capacity of soil.
(c) Increased chances of floods.
(d) Conversion of fertile land into a desert.
Ans. (d) Deforestation alters the soil properties leading to soil erosion. Due to soil erosion the lower, rocky surface gets exposed possessing less humus. In this way, the fertile land gets converted into deserts. This is known as desertification.
3. Which one of the following statements is true about a Biosphere Reserve?
(a) It is a protected area where only endemic species live.
(b) It is meant only for the conservation of plants and animals.
(c) It is meant to conserve both, the biodiversity and the culture of that area.
(d) There are no other protected areas within its limits.
Ans. (c) Biosphere reserve refers to the areas intended to conserve both the biodiversity and the culture of those enclosed areas.
4. The place meant for conservation of biodiversity in their natural habitat are
(i) Zoological garden (iii) Wildlife sanctuary
(ii) Botanical garden (iv) National park
(a) i & ii
(c) iii & iv
(b) ii & iii
(d) i & iv
Ans. (c) Wildlife sanctuaries are meant for the conservation and protection of wild animals by facilitating them with suitable living conditions. Poaching or capturing of animals is prohibited in wildlife sanctuaries. Some of the threatened wild animals are protected and preserved in wildlife sanctuaries.
On the other hand national parks are large and diverse areas meant to the protect the entire ecosystem including the flora, fauna, landscape and the historical objects of that area.
5. Which one of the following statements is true about endemic species?
(a) They are found exclusively in a specific habitat.
(b) Endemic species can never become endangered.
(c) They are found only in zoos and botanical gardens.
(d) They are not affected by the destruction of their habitat.
Ans. (a) Endemic species refers to the species of plants and animals found in a particular area. A specific type of animals or plant can be endemic to a zone, a state or a country.
6. Which of the following feature is correct for a wildlife sanctuary?
(a) It is an artificially created protected area for animals.
(b) It is a protected area for threatened and endangered wild animals.
(c) It is meant for conservation of only plant species.
(d) Capturing and poaching of animals is strictly prohibited here.
Ans. (a) Capturing and poaching of animals is strictly prohibited here. A wildlife sanctuary is an area specially designated where it is illegal to interfere in anyway with the natural life there. Hunting, shooting and fishing would be prohibited.
7. Which statement is incorrect about endangered species?
(a) Their number has decreased drastically.
(b) They might become extinct in the near future.
(c) They pose a danger to other animals.
(d) Their natural habitat needs to be protected.
Ans. (c) They pose a danger to other animals. An endangered species is a species which has been categorized as likely to become extinct hence they can never pose a danger to other animals.
8. What do black buck, elephant, python and golden cat together represent in a forest?
(a) fauna
(b) flora
(c) ecosystem
(d) species
Ans. (a) They all together represent the fauna of the forest.
9. The Red Data Book keeps a record of all the
(i) endemic species.
(ii) extinct species.
(iii) endangered plants.
(iv) endangered animals.
(a) i & ii; (b) ii & iii; (c) iii & iv; (d) i & iv
Ans. (c) Red Data Book is a book keeping the records of all the endangered animals and plants.
10. Migratory birds fly to far away areas during a particular time of a year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?
(i) Unavailability of food.
(ii) Extreme weather conditions.
(iii) Overcrowding.
(iv) Lack of nesting areas.
(a) ii & iii; (b) i & ii; (c) i & iv (d) ii & iv.
Ans. (b) Migratory birds fly to far away areas during a particular time of a year due to unavailability of food and extreme weather conditions.
11. In our country, large patches of forests are being cleared for cultivation of crops. The environmental impact of such a practice will lead to
(a) soil erosion
(b) soil conservation
(c) soil pollution
(d) soil fertility
Ans. (a) Trees anchors the soil with their roots. But loss of these trees cause widespread erosion throughout the tropics.
