Question

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


NCERT Class VIII
Science - Exemplar Problems

Chapter 16. Light

Answer 1

this help noctornal bird to have a good vision at night time , that is in the dark.this helps in finding food,knowing other aspects.
                   i hope it is helpful..........

Answer 2

Answer:

• The eyes of the ‘nocturnal animals’ such as owl that have ‘big cornea’ and a ‘big pupil’, these characteristics are improving the ‘field of vision and boost’ of their retinal surface and also assist them to gather ‘more ambient light’ during the night.

• Although some birds are truly nocturnal, in fact, many of the birds we frequently define as such are crepuscular meanings that they are active in twilight.
• Nocturnal birds tend to have plumage that is extremely camouflaged, big eyes, elevated senses, and may appear tame during the day.