Paragraf tamamlamaSoru #8267
Migratory birds undertake astonishing journeys spanning thousands of kilometres between their breeding and wintering grounds. For decades, biologists wondered how these creatures navigate with pinpoint accuracy across featureless oceans. ----. Recent neurological research indicates that specialized light-sensitive proteins in avian retinas, called cryptochromes, allow birds to literally visualise magnetic field lines.
Parçada boş bırakılan yere düşüncenin akışına göre aşağıdakilerden hangisi getirilmelidir?
Parçada boş bırakılan yere düşüncenin akışına göre aşağıdakilerden hangisi getirilmelidir?
- A)They fly in random directions until they happen to stumble upon favourable weather conditions
- B)Most migratory birds rely entirely on memorizing the shapes of highway intersections and city lights
- C)It is now known that they possess an internal compass sensitive to the Earth's geomagnetic field
- D)Young birds are invariably abandoned by their parents and must learn flight paths through trial and error
- E)Geomagnetic storms have no measurable influence on the navigational accuracy of bird flocks
Cevabı ve çözümü göster
Doğru cevap: C) It is now known that they possess an internal compass sensitive to the Earth's geomagnetic field
Çözüm: Boşluktan sonra "Recent neurological research indicates that specialized light-sensitive proteins... allow birds to literally visualise magnetic field lines" (Dünyanın manyetik alan çizgilerini görmelerini sağlayan proteinler) denmektedir. Bu bilgi, kuşların Dünya'nın jeomanyetik alanına duyarlı bir iç pusulaya sahip olduğunu belirten C seçeneğini tamamlar.