WebWhat makes a mollusk open or close? In this bivalve, it is not the brain (there is no brain). But there is a nervous system, and the nervous system reacts to stimuli.. Nervous System. The nervous system of mollusks varies greatly depending on the particular class. In general, it is more complex than those of roundworms or flatworms.Bivalves have a simple … WebSeveral types of cephalopods, most notably squid and octopuses, and potentially cuttlefish, have eyes that can distinguish the orientation of polarized light. This sensitivity is due to …
Starfish Can See You … with Their Arm-Eyes Live …
WebNov 30, 2024 · It's estimated that there are more than 100,000 mollusk species currently living on Earth (and well over 30,000 extinct species), many of which - like land snails and slugs - you can find... mobdro for firestick download
The Wonders of the Seas: Mollusks - Oceanic Research
WebSep 16, 2010 · Yes, some mollusks do have eyes... right on the top. Also, octopuses, squids, and cuttlefishes are mollusks, and have beautifully evolved eyes. Wiki User. ∙ 2010-09-16 … WebThe mollusks are a diverse group (85,000 described species) of mostly marine species. They have a variety of forms, ranging from large predatory squid and octopus, some of which show a high degree of intelligence, to small grazing forms with elaborately sculpted and colored shells. The annelids traditionally include the oligochaetes, which ... WebVesicular eyes are found in many gastropod groups in the sea and in fresh water, such as the apple snail Ampullaria. Vesicular eyes have much better visual properties than more primitive eye types. Especially predatory gastropods (which is a large portion of the sea-living species) now could better recognize and follow their prey. But a very ... mobdro for firestick 2022