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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Defective or missing ___ cause mJor blindness.

  1. a. hair cells
  2. b. rod ce.lls
  3. c. cone cells
  4. d. neuroglia

Summary Introduction

Introduction: The retina in eye consists of photoreceptors that respond to light. They are of two types namely rod cells and cone cells. The rod cells are sensitive to light and dark changes. The cone cells are not sensitive to light and function in bright light.

Explanation

Reason for the correct statement:

The cone cells have three types of pigments detecting red, blue, and green colors. All three types of cone cells are required for normal human color vision. Therefore, if one or more types of cone cells are impaired or missing, it causes color blindness.

Hence, option c. is correct.

Reasons for the incorrect statement:

Option a. is given as “hair cells”...

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