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Mollusc

Mollusc. Mr. Jeff Peterson Fulbright Exchange Teacher from USA. General Characteristics. General Characteristics of Mollusc It belongs to invertebrates. Habitat - Freshwater molluscs ex snail, oyster, mussel Marine molluscs ex squid, cuttle fish. General Characteristics.

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Mollusc

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  1. Mollusc Mr. Jeff Peterson Fulbright Exchange Teacher from USA

  2. General Characteristics • General Characteristics of Mollusc • It belongs to invertebrates. • Habitat - Freshwater molluscs ex snail, oyster, mussel Marine molluscs ex squid, cuttle fish

  3. General Characteristics • General Characteristics of Snails • Found in fresh water like ponds and slow moving streams. • Body is soft and enclosed in a spiral yellow color shell. • Spiral shell posses 6 ½ whorls • Top most whorl is the apex

  4. General Characteristics • General Characteristics of Snails • Internally the soft body is covered by mantle and is divided into head, foot, and visceral organs. • Head bears a pair of stalked eyes and tentacles which act as a sensory organ. • Visceral marks include 2 external types of tissues called mantle

  5. Mantle • Mantle • It’s a fold of muscular tissue found between the shell and the body of mullusc. • The mantle attaches the body to the shell and also helps to secrete the shell.

  6. Mantle • Functions of Mantle Cavity • Carries excess water, ions and waste. • Helps to circulate water and nutrients.

  7. Differences between snail and mussel • Differences between snail and mussel

  8. Differences between snail and mussel • Differences between snail and mussel

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