In this article we will discuss about Coral Reefs:- 1. Definition of Coral Reef 2. Biome of Coral Reef 3. Reef Building Corals and Other Organisms 4. Conditions for Formation 5. Fossil Corals and Reefs of the Geologic Past 6. Types 7. Theories regarding Formation 8. Distribution 9. Role of Symbionts 10. Genera of Reef […]
Coral Reefs: Definition, Types and Distribution | Skeleton
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Types of Polymorphic Variabilities in Siphonophora | Polymorphism
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The following points highlight the two main types of polymorphic variabilities in Siphonophora. 1. Modifications of the Polyp: A. Gastrozooids or Trophozooids or Nutritive Zooids: Characters: 1. It is like a typical polyp (Fig. 12.34A,B). 2. Each gastrozooid is a cylindrical and funnel-shaped body with a large mouth. 3. Presence of a well-formed coelenteron. 4. […]
Corals: Definition, Structure and Types (With Diagram)
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In this article we will discuss about Corals:- 1. Definition of Corals 2. Structure of Coral 3. Types 4. Formation. Definition of Corals: The hard external skeleton of certain solitary and colonial marine anthozoan cnidarians; composed chiefly calcium carbonate. Structure of Coral: Coral is secreted by some coral forming actinozoa. The skeleton of a solitary […]
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