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Assignments:
1. Plants that are close to the soil surface will probably grow luxuriantly. Animals that live on snails, like centipedes, birds and mice would probably look for alternative feeding areas.
2.
| Earthworm | Round, elongated body facilitates making holes in the ground, carrying plant litter into the ground and ingesting it with the soil | Lives in damp soil to keep skin moist | System of tubes to control the amount of water that is taken in or lost |
| Locust | Can move around to look for food. Biting mouth parts for cutting up plant material | Tubes branch inside the body to provide a moist surface for gas exchange | External skeleton prevents loss of moisture. Obtains moisture from plant material |
| Spider | Learners simply summarise information from text. | ||
| Crab | |||
| Snail |
3. Research assignment: assess in terms of the framework supplied in the module.
The snail belongs to the group of molluscs or Mollusca . Can you still remember which other animals belong to this group?
The _____________________________ and ________________________________
It will not be difficult to find a garden snail. Look at its external build and try to answer the following questions:
The largest part of the body consists of a ______________________________ foot.
On the head are two ________________________________________________ and
two _________________________________________________________________
Place the snail on a glass plate and when it begins to move, look through the glass from below and describe what you see (how it moves).
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Can you see its mouth? Describe. ________________________________________
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Lift the snail and try to look into the shell next to the body. Can you see an opening? This is the breathing opening.
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