Question:
Blind spot in the retina contains ____________.
Blind spot in the retina contains ____________.
Show Hint
Blind spot $=$ optic disc $=$ no photoreceptors (neither rods nor cones). That’s why you can’t “see” where the optic nerve leaves the eye.
Updated On: Aug 30, 2025
- only rod cells
- only cone cells
- both rod and cone cells
- neither rod nor cone cells
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The blind spot (optic disc) is the point where the optic nerve exits the eye and blood vessels enter/leave.
Step 1: Structure at the optic disc $\Rightarrow$ there are no photoreceptors present.
Step 2: Consequence $\Rightarrow$ since rods and cones are absent, light falling here is not transduced, creating a physiological scotoma (blind spot).
Therefore options (A), (B), and (C) are incorrect, and \fbox{(D) neither rod nor cone cells} is correct.
Step 1: Structure at the optic disc $\Rightarrow$ there are no photoreceptors present.
Step 2: Consequence $\Rightarrow$ since rods and cones are absent, light falling here is not transduced, creating a physiological scotoma (blind spot).
Therefore options (A), (B), and (C) are incorrect, and \fbox{(D) neither rod nor cone cells} is correct.
Was this answer helpful?
0
0
Top GATE XH- C5 Natural Sciences Questions
Top GATE XH- C5 Research methodology Questions
Top GATE XH- C5 Questions
- If ‘—’ denotes increasing order of intensity, then the meaning of the words [simmer — seethe — smolder] is analogous to [break — raze — ]. Which one of the given options is appropriate to fill the blank?
- In a locality, the houses are numbered in the following way: The house-numbers on one side of a road are consecutive odd integers starting from 301, while the house-numbers on the other side of the road are consecutive even numbers starting from 302. The total number of houses is the same on both sides of the road. If the difference of the sum of the house-numbers between the two sides of the road is 27, then the number of houses on each side of the road is:
- For positive integers \( p \) and \( q \), with \( \frac{p}{q} \neq 1 \), \[ \left(\frac{p}{q}\right)^{\frac{p}{q}} = \left(\frac{p}{q}\right)^{(\frac{p}{q} - 1)}. \] Then: (1) \( q^p = p^q \)
- Which one of the given options is a possible value of \( X \) in the following sequence? \[ 3, 7, 15, X, 63, 127, 255 \]
- On a given day, how many times will the second-hand and the minute-hand of a clock cross each other during the clock time 12:05:00 hours to 12:55:00 hours?
View More Questions