STD-4, CHAPTER-5: BIRDS-BEAKS AND CLAWS, EXTRA QUESTION ANSWERS

 

1.      Birds do not have ______ to eat their food.

Ans: Teeth

2.      How birds use their beaks and claws?

Ans: i) Birds use their beaks and claws to catch and eat food.

ii) They also use their beaks and claws to protect themselves.

3.      What do birds eat?

Ans: Birds eat flesh, seeds, fruits etc.

4.      Write the uses of a beak of a bird.

Ans: i) Birds use their beaks to tear, bite, chisel or crush the food.

ii) Some birds use their beaks to fight the enemy or catch the prey.

iii) Birds also use their beaks for preening their feathers.

5.      What is preening?

Ans: Preening means to clean the feathers and set them right.

6.      What do birds use for preening their feathers?

Ans: Birds use their beaks for preening their feathers.

7.      How preening is done?

Ans: i) Birds use their beaks for preening.

ii) The birds spread the wax, secreted at the base of the feathers, during this process.

8.      Name the different types of beak.

Ans: Different types of beaks are, i) Crushing beak

                                                            ii) curved beak

                                                            iii) piercing and tearing beak

                                                            iv) Chiselling beak

                                                            v) Probing beak

                                                            vi) Sifting beak

                                                            vii) Sticky beak

9.      Name some birds who have crushing beak. 

Ans: Sparrow and pigeon have crushing beak.

10.  How is a crushing beak helpful to a pigeon?

Ans: The crushing beak helps in crushing seeds and grains, thereby, make it soft before eating.

11.  Name a bird who can imitate our voice.

Ans: Parrot can imitate our voice.

12.  Name the bird who has curved beak.

Ans: Parrot has a curved beak.

13.  How is a curved beak helpful to a parrot?

Ans: The curved beak helps in cracking nuts and fruits.

14.  Name some birds who have piercing beak and tearing beak.

Ans: Eagles and vultures have piercing and tearing beaks.

15.  How is a piercing beak helpful to an eagle?

Ans: The piercing and tearing beak helps an eagle, to tear their flesh.

16.  Name the bird who has chiselling beak.

Ans: Woodpeckers have chiselling beak.

17.  How is a chiselling beak helpful to a woodpecker?

Ans: The chiselling beak helps the woodpecker to peck at the wood and eat insects present in the wood.

18.  Name some birds who have probing beak.

Ans: Humming birds, sunbird and hoopoe, have probing beaks.

19.  How is a probing beak helpful to hoopoe and sunbird?

Ans: i) Sunbird sucks nectar from flowers, with the help of its probing beak.

ii) Hoopoe takes out insects and worms from the holes in the ground, with its probing beak.

20.  A humming bird can flap its wings ____ times in just one second.

Ans: 90 times

21.  Name the bird who has sifting beak.

Ans: Duck has sifting beak.

22.  How is a sifting beak helpful to a duck?

Ans: i) The beak of the duck pushes out the mud and water from the holes leaving the food behind.

ii) Its beak thus, helps it to sift food from mud and water.

23.  Name the bird who has sticky beak.

Ans: A swallow has a sticky beak.

24.  How is a sticky beak helpful to a Swallow?

Ans: The swallow catches flies while flying with the help of its sticky beak.

25.  Give a sure sign of summer. (OR) which bird gives us a sign that summer is coming?

Ans: The arrival of flocks of swallows is a sure sign that summer is on its way.

 

26.  What are claws?

Ans: Claws are the long curved nails present on the feet.

27.  How are claws helpful to a bird?

Ans: Claws can be used for climbing, protecting, holding food, swimming and perching.

28.  What are birds of prey?

Ans: Birds, which kill other smaller animals and eat them as food, are called birds of prey.

29.  Name some birds of prey.

Ans: Eagle, vulture, and hawk are some birds of prey.

30.  What type of claws do eagles and vultures have?

Ans: Eagles and vultures have strong and sharp claws.

31.  How the claws help an eagle?

Ans: Eagle/ vulture firmly hold their prey while flying, with the help of their claws.

32.  Name some perching birds.

Ans: Sparrows, pigeons and crows are some perching birds.

33.  What type of feet do the perching birds have?

Ans: Perching birds have long and slender claws with three toes in front and one at the back.

34.  How the perching birds use their claws?

Ans: Toes of perching birds curl around the branch or a wire and hold it firmly.

35.  Name the bird which can sleep even while perching on wires.

Ans: Sparrow can sleep while perching on wires.

36.  Name some swimming birds/

Ans: Ducks and penguins are swimming birds.

37.  What type of feet do swimming birds have?

Ans: Swimming birds have webbed feet.

38.  What is meant by webbed feet?

Ans: When the front toes get joined by skin and give them a flat appearance, it forms a webbed feet.

39.  How do webbed feet help a duck to swim?

Ans: The webbed feet of duck is used to paddle and to push the water while swimming.

40.   Name some wading birds.

Ans: Crane and jacana are some wading birds.

41.  What type of feet do wading birds have?

Ans: Wading birds have long legs and wide spreading toes.

42.  What prevents the body of crane and jacana from sinking in water?

Ans: The widely spread out toes prevent the body of crane and jacana from sinking in water.

43.  Give one example of a scratching bird.

Ans: Hen is an example of scratching bird.

44.  What type of feet do the scratching birds have?

Ans: i) Scratching birds have strong feet with three toes in front and one at the back.

ii) Each toe has a sharp claw to scratch the ground in search of seeds and insects present in the soil.

45.  Name two climbing birds.

Ans: Woodpecker and parrot are two climbing birds.

46.  What type of feet do the climbing birds have?

Ans: The climbing birds have two toes pointing upwards and two pointing downwards.

47.  How do the climbing birds use their feet?

Ans: Climbing birds use their feet to cling to trees to catch insects and to hold the fruits.

48.  A person who studies birds is called an _______.

Ans: Ornithologist

49.  Name one Indian ornithologist.

Ans: Dr Salim Ali was an Indian ornithologist.

50.  Dr Salim Ali has been awarded the ______.

Ans: Padma Vibhushan