Question

8. Compared to the squid, vertebrate eyes are poorly engineered

because where the nerves exit, it creates a:
a. dark ring b. floating vessel c. blind spot d. blood clot

Answer 1

The vertebrate eye has a blind spot where the optic nerve exits the retina. This contrasts with the squid's eye design, which doesn't have a blind spot because of the different nerve connections.

Step-by-step explanation:

Compared to squid eyes, vertebrate eyes have an anatomical feature known as the blind spot. This is the point on the retina where the optic nerve exits, and as such, it lacks photoreceptor cells, resulting in a gap in the visual field. However, our brains interpolate the missing information so that we don't perceive this blind spot in normal vision. In squid eyes, the optic nerves connect in a way that doesn't create this blind spot. This is one reason why some argue that the squid's eye, evolutionarily speaking, exhibits better design over vertebrate eyes when considering this aspect.

Humans, bats, birds, and squids display various adaptations in their sensory organs. For example, some bats and birds have wings that enable them to fly, indicating different evolutionary paths with convergent outcomes, much like how different species develop structures like eyes independently.

Answer 2

C. Blind Spot

Explanation: The short explanation is that vertebrates blind spot is because it is part of our "visual field" that we get no information from. This so called "blind spot" is absent in octopods and squid (I hope I helped! :)