In this article we will discuss about the structure of different vertebrata. Skull: 1. Presence of cranium, sensory capsules, foramen magnum and jaws. Ready identification: Identification: Skull Bufo, Rana: Subphylum Vertebrata: 1. Cranium bony or cartilagenous and encloses a cavity. 2. Cranium constituted by three rings— occipital, parietal and frontal. 3. Sense capsules—olfactory, optic and […]
Structure of Different Vertebrata | Zoology
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Structure of Different Parts of Animal Cell | Zoology
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In this article we will discuss about the structure of different parts of animal cells. 1. Mitochondrion: (Fig. 39.1) 1. Ovoid or cylindrical in shape. 2. Number and size of mitochondria variable. 3. Cavity of mitochondrion divided into a number of cristae. 4. Both the walls of the mitochondrion and cristae formed of double lipoprotein […]
Structure of Different Organs of Mammalia | Zoology
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In this article we will discuss about the structure of different organs of Mammalia. 1. Skin (Vertical Section) Mammalia: (Fig. 41.1) The skin consists of two layers; an outer epidermis and a deeper dermis. A subcutaneous layer of loose connective tissue is present beneath the dermis. 1. Epidermis, a stratified, keratinized epithelium. It has two […]
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