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Questions and Answers
What do eyes do for living organisms?
What do eyes do for living organisms?
- Assist in digestion
- Provide vision and process visual detail (correct)
- Produce sound and process auditory detail
- Regulate body temperature
In higher organisms, what is the function of the diaphragm in the eye?
In higher organisms, what is the function of the diaphragm in the eye?
- Regulate breathing
- Aid in digestion
- Aid in blood circulation
- Regulate the intensity of light (correct)
What is the role of the optic nerve in the visual system?
What is the role of the optic nerve in the visual system?
- Produce hormones
- Regulate heart rate
- Control muscle movement
- Transmit signals to the brain (correct)
What percentage of animal species possess a complex optical system?
What percentage of animal species possess a complex optical system?
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Where are image-resolving eyes present?
Where are image-resolving eyes present?
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Study Notes
Eyes in Living Organisms
- Eyes are present in higher organisms to detect light, allowing them to perceive their surroundings and respond to stimuli.
Diaphragm Function
- In higher organisms, the diaphragm in the eye acts as an aperture, controlling the amount of light that enters the eye.
Optic Nerve
- The optic nerve is responsible for transmitting visual information from the eye to the brain, enabling the interpretation of visual stimuli.
Animal Species with Complex Optical Systems
- Approximately 96% of animal species possess a complex optical system.
Image-Resolving Eyes
- Image-resolving eyes are present in vertebrates, cephalopods (squids and octopuses), and some invertebrates, such as arthropods (insects, spiders, and crustaceans).
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