The below mentioned article provides an overview on pearl fishery in India:- 1. Introduction to Pearl Fishery 2. Artificial Pearl Culture in India 3. Prospect of Pearl Fishery 4. Enemies of Pearl Oysters. Introduction to Pearl Fishery: In India the harvesting season mainly depends on the condition of the sea from where the oysters are collected. From November to May, [...]
Learn about the comparison between nervous system of Unio and Pila. Comparison # Unio: 1. The nervous system of Unio is symmetrically arranged on two sides of the body. 2. The ganglia are widely separated by long connectives in Unio. 3. Cerebral ganglia are two in number. These ganglia are to be called cerebropleural ganglia. Each ganglion is formed by [...]
The following points highlight the fifteen interesting forms of Mollusca. The forms are: 1. Solen 2. Pecten 3. Mytilus 4. Teredo 5. Aplysia 6. Doris 7. Aeolis 8. Onchidium 9. Patella 10. Spiratella 11. Cypraea 12. Loligo 13. Octopus 14. Argonauta 15. Nautilus. Molluscs: Form # 1. Solen: Solen is a burrowing bivalve and is generally called 'Razor shell'. The [...]