Discussion
The key element in the magnetic sensor system of pigeons and migrating birds is :
Answer: C
The key's answer is the lagena.
The lagena is a small end organ of the inner ear in birds, fish and reptiles, separate from the hearing organ, with sensory hair cells under an otolithic membrane. It has been proposed as a site of the avian magnetic sense: iron-rich structures are found in its hair cells, and in pigeons the lagena has been linked experimentally to responses to magnetic fields.
The cochlea is the hearing organ, and the columella and extracolumella are the rod-like middle-ear bones that carry sound to the inner ear; none of them is associated with magnetoreception.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development