In this article we will discuss about Brachiopoda:- 1. Meaning of Brachiopoda 2. Habit and Habitat of Brachiopoda 3. External Structure 4. Internal Structure 5. Muscular System 6. Digestive System 7. Circulatory System 8. Excretory System 9. Nervous System 10. Reproductive System 11. Affinities. Contents: Meaning of Brachiopoda Habit and Habitat of Brachiopoda External Structure of Brachiopoda Internal Structure of [...]
Habit and Habitat of Phoronida: Phoronis is exclusively marine and is found sparingly over a wide geographical range. It lives in sandy bottom in shallow seas. In the adult stage, it is sedentary becomes enclosed by a membranous or leathery tube, within which the animal is capable of being retracted. It is a ciliary mucous feeder obtains food in the [...]
In this article we will discuss about Molluscs:- 1. General Characters of Molluscs 2. Classification of Molluscs 3. Economic Importance. General Characters of Molluscs: 1. Molluscs are essentially aquatic mostly marine, few freshwater and some terrestrial forms. 2. The body is soft, un-segmented, bilaterally symmetrical and consists of head, foot, mantle and visceral mass. 3. The body is clothed with [...]