Learn about the comparison between respiratory organs of Unio and Pila. Comparison # Unio: 1. Modes of respiration in Unio is aquatic. 2. Respiratory organs in Unio are primarily the gills. Highly vascular mantle also acts as an accessory respiratory structure. 3. Two highly developed symmetrical gills are situated one on each side of the […]
Respiratory Organs in Unio and Pila| Phylum Mollusca
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Economic Importance of Phylum Molluscs
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1. Edible Molluscs: (i) Edible Oysters: From ancient times the Romans and Greeks used the oysters as a main dish in their meals. The Red Indians were great oyster eaters. The maximum amount of oyster meats are collected from two genera— Ostrea and Crassostrea, which belong to the family Ostreidae and class Bivalvia. In Japan, […]
Foot of Phylum Mollusca: Origin, Structure and Modifications
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Meaning and Origin of Foot: Phylum Mollusca is characterised by the pronounced development of musculature known as the foot. It is the locomotory organ in Molluscs. This organ is quite uncommon and strange to others. It is regarded as the remnant of the ‘dermo-muscular tube’ of the ancestral form whose ventral side became greatly developed […]
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