Question
Bring out five differences between Annelida and Arthropoda. Name the blood-sucking ectoparasite of Annelida.
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Annelida
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Arthropoda
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1.
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Body is externally divided into ring-like metameres.
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Body is divided into head, thorax and abdomen.
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2.
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Locomotion is aided by chaetae/ parapodia.
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Locomotion is aided by walking legs and/ or wings.
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3.
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There is a closed circulatory system.
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There is an open circulatory system.
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4.
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Haemoglobin is dissolved in the plasma.
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Haemolymph, the body fluid has no respiratory pigment.
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5.
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Animals are hemaphrodite, i.e., bisexual.
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Animals are unisexual.
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6.
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Respiration is by moist, vascularised skin, i.e., cutaneous.
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Respiration is by tracheae, book-lungs or gills.
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7.
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Excretion is by nephridia.
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Excretion is by malpighian tubules or green glands.
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