Classification of Trygon (Dasyatis) Geographical distribution Trygon is abundantly distributed in tropical regions of the Atlantic and Pacific Oceans. It has been reported from India, Japan, China, North America, Australia and South America. Upper Jurrassic to Recent. Habit and habitat Trygon is found lying quietly on the sea bottom. It occasionally swims to change the […]
Classification of Skate Fish Geographical distribution Skate fish is found in almost all temperate sea waters. Most of the species belonging to the genus Raja are abundantly distributed in northern hemisphere, Arctic and Antarctic regions. Upper Jurassic to Recent. Habit and habitat Skate fish is marine, sluggish, bottom-dwelling fish. It is carnivorous, feeding on small
Classification of Rhinobatus (Guitar Fish) Geographical distribution Rhinobatus has been reported from west coast of Africa, Indian Ocean, Australia, China, Atlantic and Pacific coasts of America and Galapagos. Mostly distributed in tropical and sub-tropical seas. Upper Jurassic to Recent. Habit and habitat It is a bottom dweller. General Characteristics of Rhinobatus (Guitar Fish) Economic importance
Classification of Pristis (Saw Fish) Geographical distribution Pristis is found in tropical and sub-tropical regions. Indian form ascends beyond tidal zones. It is reported from America, Gulf of Mexico, Lower Mississippi, the Mediterranean sea and Atlantic waters. Upper Jurassic to Recent. Habit and habitat Pristis is a warm water marine type. It is predacious, feeding
Cephalodiscus is a small genus of sessile hemichordates belonging to the class Pterobranchia. These colonial, tube-dwelling marine organisms are known for their unique lifestyle, in which individuals live within secreted tubular structures attached to rocky or deep-sea substrates. Each zooid possesses a set of feathery arms used for filter feeding. Although they are relatively simple
Rhabdopleura belongs to the class Pterobranchia and represents one of the simplest living hemichordates. It lives in colonies on hard marine substrates and secretes delicate tubes, called coenecia, in which individual zooids reside. Each zooid extends its tentaculated arms to filter feed, capturing suspended particles from the surrounding water. Because it shares important features with
Saccoglossus is a genus of acorn worms belonging to the class Enteropneusta under the phylum Hemichordata. These worms live in shallow marine habitats, where they burrow through sandy or muddy substrates while feeding on organic particles. They play an important role in sediment turnover and nutrient recycling. Because Saccoglossus exhibits key hemichordate characteristics—such as the
Comparative study of Vertebral Column Scoliodon : Vertebral Column Comments : It Scoliodo Vertebral Column of 130 vertebrae divided into trunk and caudal regions. Vertebrae are amphicoelous. Vertebrae of Frog (Vertebral Column of Frog) Comments Vertebrae of Varanus (Vertebral Column of Varanus) Comments Vertebrae of Fowl (Vertebral Column of Fowl) Comments Vertebrae of Rabbit (Vertebral
Comparative study of Pelvic Girdles of vertebrate Scoliodon Pectoral Girdle and Fins Comments Pectoral Girdle and Sternum of Frog Comments : Pectoral Girdle of Varanus Comments Pectoral Girdle of Fowl Comments Pectoral Girdle of Rabbit Comments
Comparative study of Pelvic Girdles of vertebrate Scoliodon Pelvic Girdle and Fins Comments Pelvic Girdle of Frog Comments Pelvic Girdle of Varanus : Left Innominate : Lateral View Comments : Pelvic Girdle of Fowl : Outer View Comments Pelvic Girdle of Rabbit Comments
Comparative study of Forelimb bones of vertebrate Forelimb Bones of Frog Forelimb Bones of Frog are Humerus, radio-ulna and hand bones constitute bones of forelimb. Comments : Forelimb Bone of Varanus Comments: Forelimb Bone of Varanus is constituted by humerus, radius and ulna and bones of forefoot or hand. Forelimb Bones of Fowl The Forelimb
Comparative study of Hind limb bones of vertebrate Hind Limb Bones of Frog Hind limb constitute the femur, tibio-fibula, astragalus-calcaneum and bones of foot. Comments Hind Limb Bones of Varanus Hind limb consists of femur, tibia, fibula and bones of hind foot. Comments: Hind Limb Bones of Fowl Hind limb comprises of femur, tibio-tarsus and
Fish slides of Scoliodon are widely used in zoology laboratories to study the internal and external anatomy of the spiny dogfish shark. These slides typically display structures such as the gills, fins, vertebrae, muscle blocks, and sensory organs. Students examine Scoliodon slides to understand cartilaginous fish morphology, respiratory adaptations, and evolutionary features that distinguish elasmobranchs
Amphibian slides of the frog are commonly used in zoology practicals to study the structural organization of a typical vertebrate. These slides often include transverse and longitudinal sections of skin, muscle, intestine, liver, kidney, ovary, testis, and blood vessels. Students examine frog slides to understand amphibian adaptations, organ systems, epithelial types, and basic vertebrate anatomy.
Reptile slides of the lizard are widely used in zoology laboratories to study the tissue structure and organ organization of a typical reptile. These slides often include sections of skin, muscle, intestine, liver, kidney, testis, ovary, and scales. Students use lizard slides to understand reptilian adaptations such as keratinized epidermis, well-developed lungs, and efficient circulatory
Bird slides are commonly used in zoology and histology practicals to study the specialized tissues and organ systems of avian species. These slides often include sections of feathers, skin, muscle, lung, intestine, liver, kidney, ovary, and testis. Students examine bird slides to understand adaptations such as lightweight bones, efficient respiration, and high metabolic rate. Because
Mammal Slides or Rabbit slides are widely used in zoology and histology practicals to study the tissue structure and organ systems of mammals. These slides typically include transverse and longitudinal sections of skin, muscle, intestine, liver, kidney, lung, heart, ovary, and testis. Students examine rabbit slides to understand mammalian characteristics such as hair, endothermy, four-chambered
Dissection of Rat : External Features Procedure of DISSECTION OF RAT :- For external features first kill the rat with chloroform and then immerse it in a solution of lysol or any antiseptic solution. Lay the rat in a dissecting dish keeping ventral surface upwards. Note the following structures : Dissection of Rat : General
External Features Dissection of Pigeon : In order to study external morphology, take freshly chloroformed pigeon. Note that entire body, except the beak and feet, is covered by feathers. Body is regionated into head, neck, trunk and tail. The size and colour of the body vary in different species and varieties. Dissection of Pigeon :
External Features Dissection of Uromastix (Lizard) : Procedure :- Take a freshly-killed specimen and examine the external characters. Uromastix is commonly called as ‘Sanda’. Arterial System of Uromastix (Lizard) Dissection of Uromastix (Lizard) Procedure. Take a Uromastix freshly-killed with chloroform, wash it in water and lay it on its back in the dissecting dish. Pin
