Question

a. tick (✓) the correct answer:

1. crushing beak helps the bird to ______.

(i) crack the nut
(ii) tear flesh
(iii) crush seeds and grains ✓

1. birds do not use their beaks to ______.

(i) fight
(ii) clean feathers
(iii) walk ✓

1. the birds that feed on the flesh of other animals are known as ______ birds.

(i) climbing
(ii) swimming
(iii) preying

1. beaks which are flat and broad with holes on both sides are called ______.

(i) sifting beak
(ii) chiselling beak
(iii) curved beak

1. climbing birds have ______.

(i) one toe pointing forward and one backward
(ii) two toes pointing forward and two backward
(iii) one toe pointing forward...

Explanation:

Question 1

Crushing beaks are adapted for crushing seeds and grains. Cracking nuts is more related to a strong beak for breaking hard shells, and tearing flesh is for sharp, tearing beaks. So the correct option is (iii).

Birds use beaks to fight (e.g., territorial disputes) and clean feathers (preening). Beaks are not used for walking; legs and feet are for walking. So the correct option is (iii).

Preying birds (predatory birds) feed on the flesh of other animals. Climbing birds are adapted for climbing, and swimming birds for swimming. So the correct option is (iii).

Answer:

(iii) crush seeds and grains

Question 2