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

 A.     FILL IN THE BLANKS.

1.      Birds do not have ______ to eat.

Ans: teeth

2.      Sunbird ______ nectar from flowers.

Ans: sucks

3.      A duck has a _______ and broad beak.

Ans: flat

4.      A penguin uses its webbed feet to _____.

Ans: swim

5.      ______ and jacana are wading birds.

Ans: Crane

B.      MATCH THE FOLLOWING:

1.      sunbird                             (a) sifting beak

2.      eagle                                 (b) sticky beak

3.      Parrot                               (c) chiselling beak                                   

4.      duck                                  (d) probing beak

5.      swallow                            (e) curved beak

6.      woodpecker                    (f) crushing beak

7.      pigeon                               (g) piercing and tearing beak

      Ans:

1.      sunbird                             (d) probing beak

2.      eagle                                 (g) piercing and tearing beak

3.      Parrot                               (e) curved beak                                

4.      duck                                  (a) sifting beak

5.      swallow                            (b) sticky beak

6.      woodpecker                     (c) chiselling beak

7.      pigeon                               (f) crushing beak

C.      TICK THE CORRECT OPTION.

1.      A sparrow uses its short and hard beak for –

(a)   Sucking nectar from flowers                                      

(b)   Sifting food from mud

(c)    Catching flies while flying                 

(d)   Crushing of grains

Ans: crushing of grains

2.      A hoopoe takes out insects and worms from the holes in the ground with the help of its –

(a)   Strong, short and straight beak                                      

(b)   Long and slender beak

(c)    Broad beak that has holes on the sides                

(d)   Curved and hard beak

      Ans: long and slender beak

3.      A bird, that does not have strong and sharp claws is the –

(a)   eagle                                      

(b)   duck

(c)    vulture                 

(d)   hawk

      Ans: duck

4.      Birds, that have two toes pointing upwards and two downwards, are known as –

(a)   Scratching birds                                      

(b)   Wading birds

(c)    Climbing birds

(d)   Perching birds

      Ans: climbing birds

5.      It is a perching bird.

(a)   Sparrow                                      

(b)   jacana

(c)    hen    

(d)   duck

      Ans: sparrow

D.     ANSWER THE FOLLOWING QUESTIONS IN BRIEF.

1.      What do birds use for preening their feathers?

Ans: Birds use their beaks for preening their feathers.

2.      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.

3.      What are claws?

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

4.      Name three birds of prey.

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

5.      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.

E.      ANSWER THE FOLLOWING QUESTIONS.

1.      Write two main 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.

2.      How are claws helpful to a bird?

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

3.      How does a swallow catch its food?

Ans: i) The beak of a swallow is sticky from inside.

ii) This helps the swallow to catch flies while flying.

4.      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.

5.      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.