Biology Practical As90713

Report objective: To find if garners (Helix Aspersa) atomic number 18 affected by soil moisture levels Introduction: The ecological niche of the flow snail (Helix aspersa) Helix aspersa, known more commonly as the garden snail, is a species of land snail it is usu aloney found in parks and gardens, but as well inhabits woods, hedgerows and dunes. An heavy(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 back friction. The mucus also reduces the snails risk of injury and helps take aim away potentially dangerous insects like ants. Ninety-nine share of snail activity, including feeding, occurs in the cool , dark night-time, with peak activity winning place 2 to 3 hours after darkness begins. The phalanx tank temperature stimulates activity, and the night-time dew helps the snail move easily. They hide in shelter 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 earn to produce mucus for motion. Snails move using their muscular fo ot. By creating an undulating wave-like moti! on aprospicient the length of the foot, a snail is able to affect against a surface and propel its body forward. unmatchable damage of this method of movement is that the animal must take polish off a trail of mucus, which is rich in water, protein and carbohydrate. As yearn as resources are plentiful, this isnt a problem, but on dry cement and in dry air for example, it has an attached negative impact on the movement...If you want to get a full essay, order it on our website: BestEssayCheap.com

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