Question

Tail feathers and wing feather of birds are known as
 A. Filoplumes and contours
 B. Rectrices and remiges
 C. Remiges and rectrices
 D. Contours and rectrices

Answer 1

Hint: The shed of their flight plumes can cause difficult issues for winged animals, as it can hinder their capacity to fly. Various species have developed various methodologies for adapting to this, going from dropping all their flight quills without a moment's delay (and along these lines getting flightless for some generally brief timeframe) to broadening the shed over a time of quite a while.

Complete answer:
 Flight plumes are portrayed as long, firm, lopsidedly molded, yet evenly matched pennaceous quills that can be seen on the wing and tail of a fowl. Those on the wings are called remiges, while those on the tail are called rectrices. The essential capacity of the flight plumes is to help in the age of both pushes and lift, in this way empowering flight.

Additional Information: Flight quills (Pennae volatus) are the long, firm, unevenly formed, evenly matched pennaceous plumes on the wings or tail of a fledgling; those on the wings are called remiges, particularly reflex. while those on the tail are called rectrices, solitary rectrices. The essential capacity of the flight plumes is to help in the age of both pushes and lift, along these lines empowering flight. The flight plumes of certain winged creatures have advanced to play out extra capacities, for the most part, connected with regional showcases, romance ceremonies, or taking care of techniques. In certain species, these quills have formed into long garish tufts utilized in visual romance showcases, while in others they make a sound during show flights.
So, the correct answer is ‘Rectrices and remiges’.

Note: Small serrations on the main edge of their remiges help owls to fly quietly (and in this way chase all the more effectively), while the extra-solid rectrices of woodpeckers help them to support against tree trunks as they hammer on them. Indeed, even flightless fowls actually hold flight quills, however at times in profoundly adjusted structures.