Inter-special social interaction between intelligent Mollusks ( octopus, cuttlefish) is mainly visual. Thus they need complex eyes to communicate.
No, cockles do not have eyes. They are bivalve mollusks with a simple anatomy, lacking complex sensory organs like eyes. They primarily rely on their other senses to navigate and survive in their marine environment.
Yes, some mollusks do have eyes... right on the top. Also, octopuses, squids, and cuttlefishes are mollusks, and have beautifully evolved eyes.
It is the most complex type of mollusks.
Yes. They have extensive cephalization. They have a brain and eyes.
Cnidarians include jellyfish and corals. Cnidarians are less complex than annelids or mollusks because the latter have gills with many layers of tissue.
Simple and Complex eyes
If the insect in question has both complex eyes and simple eyes. the simple eyes are for close range vision while the complex eyes are primarily for longer range vision. If the insect has no complex eyes, then their simple eyes are used best they can for all around vision.
They all have complex ganglia to control breathing, movement, and digestion.
They are mollusks (like clams). They do not have eyes, that I can tell. For some reason I cannot add related links. Wikipedia has a nice article on scallops.
No, squids have complex camera eyes.
No, camera eyes like all other vertebrates. Mollusks also have camera eyes. Only anthropods and insects have compound eyes.
answer 2 Mollusks contribution to the evolution scheme, was to invent the shell, which in later form became the skeleton. Slugs have internalized their shells.With a shell, you now have a rigid point to which you may attach muscles, and thus make complex movements.