JAMB - Biology (2009 - No. 33)
The part of a domestic fowl responsible for preventing heat loss is the?
filoplume
contour feather
down feather
quill
설명
DOWN FEATHERS ARE THOSE WHICH HELP TO KEEP THE BIRDS'S BODY WARM.
THEY ARE SOFT AND FLUFFY, FOUND ON THE INNER SIDE OF BIRD'S BODY .