Question

Hello brainly users.....

Please answer my questions

Define compass needle

Difference between blind spot and yellow spot

Answer 1

A magnetized pointer (usually marked on the North end) within acompass, free to align itself with the Earth's magnetic field

Blind spot vs Yellow spot

Blind spot

1. It lies a little away from the yellow spot.

2. It contains no pigment.

3. Optic nerve starts from this spot.

4. It lacks a depression.

5. It lacks visual receptors and is insensitive to light.

6. The eye coats are absent at blind spot.

7. No image is formed at this place.

Yellow spot

1. It lies exactly opposite the centre of the cornea.

2. It has yellow pigment.

3. No nerve starts from this spot.

4. It has a shallow depression, the fovea centralis, at its middle.

5. It lacks visual receptors and is sensitive to light.

6. The eye coats are present at yellow spot.

7. Image is formed at this place