Question

Here are the kinds of feathers of a pigeon, match them correctly.
1. Rectrice feathers are useful in balancing and steering found in the tail of birds.
2. Typical feathers of a bird.
3. Filoplumes are found all over the body.
4. Remige feathers form the wings of birds.
5. Down feathers help in retaining heat and are found all over the body.
6. Contour feathers give streamline shape to the bird's body.

A) 1-F, 2-D, 3-A, 4-E, 5-B, 6-C
B) 1-E, 2-F, 3-A, 4-D, 5-B, 6-C
C) 1-C, 2-F, 3-A, 4-E, 5-B, 6-D
D) 1-D, 2-F, 3-A, 4-E, 5-B, 6-C

Answer 1

Hint:Birds have different types of feathers that are specific to perform specific kinds of roles including flying, protection, covering the body, etc.

Complete answer:
Let us first match the feather description with their diagram:
Seeing from the diagram, rectrice feathers which are useful in balancing and steering found in the tail of birds are represented by figure E. These feathers have barbs which are of equal length on both the sides
>Typical feathers of a bird are shown in figure F.
>Filoplumes which are found all over the body are shown in figure A. They are found under the contour feathers
>Remige feathers which form the wings of birds are shown in figure D. They are seen as short barbs on on side and on the other side as long ones
>Down feathers that help in retaining heat and are found all over the body are shown in figure B.
>Contour feathers that give streamline shape to the bird's body are shown in figure C. They can be seen all over the body.
>Option B: The sequence 1-E, 2-F, 3-A, 4-D, 5-B, 6-C match the above sequence formulated. Therefore, this is the correct option.

Thus, the correct option is (B) 1-E, 2-F, 3-A, 4-D, 5-B, 6-C.

Note:Different kinds of feather play different roles in the structural features of a pigeon so that they can carry out their routine work.
>They provide insulation thereby making sure that the body temperature of most birds is around 40 degrees.
>They help in flight.
>The individual feathers which are present in the wings and tail have an important role in controlling the flight.