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Revision as of 17:58, 19 December 2020
Land and Freshwater Mollusks
Authority:
Category:
Skill Level:
Year Introduced:
Requirements
1. Distinguish between sea snails, land snails, slugs, freshwater snails and freshwater bivalves.
2. Explain the basic structure and parts of the mollusk and its shell.
3. Explain the snail's method of eating, moving and reproducing.
4. Explain freshwater bivalves's methods of eating and moving.
5. Complete the following:
- a. Describe the uses people have made of snails.
- b. Describe the disease and pest problems associated with some land and freshwater snails.
6. Complete the following:
- a. Explain how snails fit into an area's ecological balance.
- b. Explain the need for conservation of natural areas as habitats for snails and other creatures.
7. Do either a or b:
- a. Collect, photograph or sketch land snails, freshwater snails and/or freshwater bivalves from the local area (empty shells only).
- b. Keep and observe live snails or slugs in a suitable container.
