41. NCERT Exemplar XIV

1. Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?

 

The size of the eyes of nocturnal bird is large. Eyes of the nocturnal birds having large cornea with a wider pupil, can collect more ambient lightless ambient light which help them to see the objects even at nightonly at day.

 

2. What kind of lens is there in our eyes? Where does it form the image of an object?

 

Concave lensConvex lens is present in our eyes, which focuses light on the back of the eyeinfront of the eye, on a layer called lenscorneapupilretina.