The phylum Mollusca contains over 100,000 species with a variety of body forms and lifestyles. In mollusks, the coelom is reduced and limited to the region around the heart. The Mollusk body first appeared during the Cambrian Period. All mollusks have: 1. A visceral mass containing internal organs, including the digestive tract, paired kidneys, and reproductive organs. 2. A mantle [...]
In this article we will discuss about:- 1. External Features of Cuttle Fish 2. Locomotion in Cuttle Fish 3. Digestive System 4. Respiratory System 5. Circulatory System 6. Excretory System 7. Nervous System 8. Reproductive System 9. Fertilization and Development. Contents: External Features of Cuttle Fish Locomotion in Cuttle Fish Digestive System of Cuttle Fish Respiratory System of Cuttle Fish [...]
In this article we will discuss about:- 1. Shell of the Apple Snail 2. External Features of Apple Snail 3. Torsion 4. Locomotion 5. Pallial Complex 6. Body Cavity 7. Digestive System 8. Respiratory System 9. Circulatory System 10. Excretory System 11. Nervous System 12. Reproductive System 13. Fertilization and Egg Laying in Apple Snail 14. Development Fertilization and Development [...]