STD 5 CHAPTER 4 - ANIMALS - OUR FRIENDS, EXTRA QUESTIONS AND ANSWERS

 

1.      Explain the usefulness of animals in our day-to-day life.

Ans: The following points explain the usefulness of animals in our day-to-day life:

i)          Silk and wool that are used for making cloth, come from silkworm and sheep respectively.

ii)        Leather, obtained from the skin of animals like goat, sheep and buffalo, is used to make shoes, purses and bags.

iii)      Pearls, are obtained from oysters.

iv)      Many types of fish, prawns, lobsters and crabs, are used as sea food.

v)        Animals like horses, camels, elephants are used as means of transport.

vi)      In the ancient times, kings had dogs that used to assist them in hunting in the forests. At present, dogs assist police in various search operations.

vii)    Animal waste, like cowdung, is converted to compost. Compost makes soil fertile for growth of plants.

2.      Name the animal that gives us silk.

Ans: Silkworm gives us silk.

3.      Name the animal that gives us wool.

Ans: Sheep gives us wool.

4.      Name the animals who give us leather.

Ans: Goat, sheep and buffalo, give us leather.

5.      Name the animal that give us pearls.

Ans: Oyster gives us pearls.

6.      What is an oyster?

Ans: An oyster is a type of shell fish that has a rough shell with two parts, it is eaten both cooked and raw.

7.      Name some animals which are used as sea food.

Ans: Fish, prawns, lobsters and crabs, are used as sea food.

8.      Name some animals which are used as means of transport.

Ans: Horses, camels and elephants are used as means of transport.

9.      What are draught animals?

Ans: Draught animals are the animals which are used for pulling heavy loads.

10.  Name the animals which are used to draw wagons and carts.

Ans: Horses and oxen which are used to draw wagons and carts.

11.  Name five wild animals.

Ans: Monitor lizard, tiger, elephant, wild boar, giraffe are the wild animals.

12.  How are human beings destroying the natural surroundings of wild animals?

Ans: The human beings, are destroying the natural surroundings of wild animals by cutting down forests and by polluting rivers.

13.  Differentiate between extinct and endangered animals. Give two examples of each type.

Ans: i) Extinct animals are those animal species which are no longer living. Some examples are, Tasmanian tiger, quagga, passenger pigeon, golden toad and Caribbean monk seal etc.

ii) Endangered animals are those animal species that are in danger of becoming extinct. Animals, like African elephant, Bactrian camel, bald eagle, golden lion, tamarin and panda, are endangered animals.

14.  Name the wildlife sanctuary that is included in the list of the seven wonders of the natural world.

Ans: Kenya’s Masai Mara wildlife sanctuary.

15.  What is wildlife trade? Why is it harmful?

Ans: i) The illegal killing and poaching of animals for their body parts, is known as wildlife trade.

ii) Due to the wildlife trade, many species may disappear from earth.

16.  List the body parts of various animals which are being used for trading.

Ans: i) Elephants are hunted for their tusks. The tusks, or ivory, are used for making jewellery and decoration pieces.

ii) North and South American bears are also being killed for their gall bladders, which are then smuggled to other countries and used to make medicines.

iii) Rhinoceroses are being slaughtered for their horns. These, are grounded into powder form, to make medicines.

iv) Musk deer is becoming extinct because it is being hunted to obtain Kasturi, an ingredient of many perfumes.

v) A variety of mountain goat is hunted because its hair yield a very expensive variety of wool – pashmina.

vi) Tigers are killed for making use of their bones. The skins of tigers are used to decorate walls by hunters. Tiger claws and teeth are worn as jewellery by many superstitious persons who think that these can bring them good luck.

vii) Legs of frog are eaten as they are considered to be a ‘delicacy’.

viii) Caviar, another very costly delicacy, is made from the unfertilised eggs of a variety of fish. However, this has led to a steady decline in the number of this variety of fish.

17.  Why tigers are being killed by humans?

Ans:i) Tigers are killed for making use of their bones.

ii) The skins of tigers are used to decorate walls by hunters.

iii) Tiger claws and teeth are worn as jewellery by many superstitious persons who think that these can bring them good luck.

18.  Why elephants are being killed by humans?

Ans: Elephants are hunted for their tusks. The tusks, or ivory, are used for making jewellery and decoration pieces.

19.  Why Rhinoceroses are being killed by humans?

Ans: Rhinoceroses are being slaughtered for their horns. These, are grounded into powder form, to make medicines.

20.  Why Musk deers are being killed by humans?

Ans: Musk deer is becoming extinct because it is being hunted to obtain Kasturi, an ingredient of many perfumes.

21.  Why mountain goats are being killed by humans?

Ans: A variety of mountain goat is hunted because its hair yield a very expensive variety of wool – pashmina.

22.  Name the animals that can become man eaters.

Ans: Leopards and tigers can become man eaters.

23.  Which act has been passed by the Indian government to protect wildlife?

Ans: Government of India enacted the Wildlife Protection Act, 1972, to protect wildlife.

24.  What is the objective of Wildlife protection Act, 1972?

Ans: The objective of Wildlife Protection Act, 1972, is to control poaching and illegal trade in wildlife.

25.  Give the meaning of the term food chain.

Ans: Food chain is a process of ‘who eats whom’. A food chain shows how each living organism gets its food.

26.  Give one example of food chain in plains.

Ans: Leaves (eaten by), caterpillar (eaten by), a frog (eaten by), a snake (eaten by), an owl form one food chain.

27.  What is a foodweb?

Ans: The interconnection of a number of food chains, is called a foodweb.

28.  ______ shows how plants and animals are interconnected in many ways to help them survive in nature.

Ans: Food web

29.  Suggest the steps to prevent cruelty to animals.

Ans: i) Do not throw polythene bags in the garbage. Stray cattle can swallow them and they may die.

ii) Do not put birds in cages and fish in aquariums. They feel trapped in small spaces and their life span gets reduced.

iii) When visiting a forest, park or garden, one should not remove eggs of birds from their nests.

iv) Put some water in an earthen bowl and keep it outside, especially during summers.

v) If you have pets, give them the love and good care that they deserve. If the pet animal appears to be sick, take it to the veterinarian.

vi) Suggest your friends to treat animals with kindness and respect.

30.  Who is a veterinarian?

Ans: A doctor that looks after, heals and treats animals, is called a veterinarian.

31.  Name the largest animal rights group in the world.

Ans: PETA (People for the Ethical Treatment of Animals) is the largest animal rights group in the world.

32.  What is the slogan given by PETA?

Ans: PETA’s slogan is “animals are not for us to eat, wear, experiment on, or use for entertainment.”

33.  Name the four core issues that PETA focuses on.

Ans: PETA focuses on four core issues: factory farming, fur farming, animal testing, and animals in entertainment.