Here is a list of thirty-four types of mammals that are found in India. Mammal: Type # 1. Ornithorhynchus (Duck-billed Platypus): It lays eggs in the nests. The beak or bill is broad and flat just like a duck, hence named as duck-billed platypus. Pinnae are absent. Both the webbed feet and flattened tail help in swimming. Mammary glands are [...]
The below mentioned article provides short notes on Class Chondrichtyes. 1. The fishes of this class bear cartilaginous endoskeleton. They are cold blooded (poikilothermous or ectothermic). There are about 600 species of cartilaginous fishes. 2. The skin is tough, containing minute placoid scales, which are dermal in origin. 3. Except in the Chimaeras, the gills are not covered by an [...]
In this article we will discuss about the General Characters and Classification of Phylum Platyhelminthes. General Characteristics of Phylum Platyhelminthes: (Gk. platys- broad or flat; helminworm) Gegenbaur (1859) placed flat worms in a separate group and gave the term Platyhelminthes. The phylum Platyhelminthes includes about 13,000 species. General Characters: 1. Habitat: The flat worms arc mostly parasites but some flat [...]