Mollusca
Mollusca is a division of phyla which contains animals such as snails, slugs, octopuses, squids, clams, and more. Mollusca constitutes one of the largest phyla of animals, containing at least 47,000 different species and numbers of individuals. All animals under the have soft body's, which are usually protected by a hard shell. Some forms, such as octopuses, have lost their hard shell because they got lost in the course of evolution.
Animals in the Mollusca phyla generally have the same fundamental body plan.
Common examples of Mollusca are scallops, slugs, and octopuses.
Animals in the Mollusca phyla generally have the same fundamental body plan.
Common examples of Mollusca are scallops, slugs, and octopuses.
Scallops
Though scallops do not have brains, they have rather quite simple nervous systems. Scallops have three nerve centers, that are distributed around their visceral mass, that control their actions. Scallops have sensory cells that do sense, react, and feel to sensations like touch. But Scallops do not have sensory organs.
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Slugs
Slugs have sensory organs. They have eyes that determine light from darkness. They also have tentacles that are very important. Their eyes on their tentacles. Their tentacles have 4 very important sensory organs.
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Octopuses
Octopuses have have highly complex nervous systems. They have brains. They also have neurons in there arms. The reflexes of their arms are very quick.
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