Biology Practical As90713

Report objective: To find if garners (Helix Aspersa) are affected by soil wet levels Introduction: The ecological niche of the operate snail (Helix aspersa) Helix aspersa, known more commonly as the garden snail, is a species of land snail it is norm every last(predicate)y found in parks and gardens, but similarly inhabits woods, hedgerows and dunes. An big(predicate) snail has a hard, thin shell 2540 mm in diameter and 2535 mm high, their bodies and shells are permanently fused. The shell is somewhat vari up to(p) in color and shade but is generally dark chocolate-brown or chestnut with yellow stripes, flecks, or streaks. Main features of the snail are its hard shell and a mucous secretion producing gland. They capture mucus in order to aid movement by cut friction. The mucus also reduces the snails risk of injury and helps take menage away potentially dangerous insects like ants. Ninety-nine destiny of snail activity, including feeding, occurs in the cool, dark night-time, with peak activity victorious place 2 to 3 hours after darkness begins. The multitude tank temperature stimulates activity, and the night-time dew helps the snail move easily. They hide in supply places during virtually of the day. Snails are herbivores and are often found in gardens and compost heaps as they will eat lettuce and all mode of tender and soft garden plants.

Snails are also a source of food for animals like birds, hedgehogs and mice. Soil moisture is an chief(prenominal) abiotic factor that hugely affects snails as they need plenty of nominate to produce mucus for motion. Snails move using their muscular foot. By creating an un! dulating wave-like motion aprospicient the length of the foot, a snail is able to turn on against a surface and propel its body forward. unmatchable detriment of this method of movement is that the animal must take withdraw a trail of mucus, which is rich in water, protein and carbohydrate. As presbyopic as resources are plentiful, this isnt a problem, but on dry cement and in dry air for example, it has an coterminous negative impact on the movement...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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