CYCLOSTOMATA SLIDES of Ammocoete Larva

Cyclostomata slides of the Ammocoete larva are essential in zoology to study the early developmental stage of lampreys. These slides show key chordate features such as the notochord, gill pouches, dorsal nerve cord, myotomes, and larval mouth structures. Students use Ammocoete slides to understand primitive vertebrate anatomy, filter-feeding mechanisms, and evolutionary links between cyclostomes and […]

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DEVELOPMENT of frog

DEVELOPMENT OF FROG

DEVELOPMENT OF FROG DEVELOPMENT OF FROG Frog : Structure of Ovum Comments Identification : Since the egg contains pigmented hemisphere towards animal pole, hence it is ovum of frog. DEVELOPMENT OF FROG : V.S. Passing Through Blastula Comments Identification : Since the egg contains blastocoel and above features hence it is V. S. through blastula

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Types of Beaks in Birds

TYPES OF BEAKS IN BIRDS

Introduction : Types of Beaks in Birds The entire modem avian world is characterized by the absence of teeth. The upper and lower jaw bones become elongated to form a peculiar beak or bill covered by a horny sheath called as rhamphotheca. The modification of forelimbs into wings deprived birds of some of their normal

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EMBRYOLOGY SLIDES – RABBIT (SPERMATOGENESIS & OOGENESIS)

EMBRYOLOGY SLIDES – RABBIT (SPERMATOGENESIS & OOGENESIS)

Spermatogenesis Spermatogenesis can be studied through histological preparation of tissues (testis) or by squash technique or heat dry Giemsa technique. For histological studies, testis of Albino rat is taken out after chloroforming rat. After fixing testis is 10% formaline, its sections are cut through microtomy process. Stain sections in haematoxylin and eosin, dehydrate, clear in

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LOWER JAWS OR MANDIBLES IN VERTEBRATE

LOWER JAWS OR MANDIBLES IN VERTEBRATE

Overview of the Mandibles A comparative study of the lower jaw or mandibles in vertebrates explores the evolutionary adaptations, structural variations, and functional modifications of this critical skeletal element across different vertebrate groups. Here’s an overview of key aspects to consider: Evolutionary Development Comparative Anatomy in Vertebrate Groups Cartilaginous Fishes (Chondrichthyes): Bony Fishes (Osteichthyes): Lower

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Classification of Ovis : Sheep

OVIS : SHEEP

Introduction The genus Ovis, commonly known as sheep, encompasses both wild and domesticated species that have become an integral part of ecosystems and human civilization. Wild sheep, such as the argali (Ovis ammon) and bighorn sheep (Ovis canadensis), are known for their impressive horns and adaptability to rugged terrains, while domesticated sheep (Ovis aries) have

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Classification of Sus Scrofa (Wild Boar)

SUS SCROFA (WILD BOAR)

Introduction The wild boar (Sus scrofa), a member of the family Suidae, is a highly adaptable and widespread mammal native to Eurasia and North Africa. It is recognized for its robust build, bristly coat, and characteristic tusks. Wild boars have a remarkable ability to thrive in diverse habitats, ranging from dense forests to open grasslands.

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Classification of Rhinoceros

RHINOCEROS

Introduction The rhinoceros, commonly referred to as the rhino, is one of the most iconic and ancient megafauna on Earth. These large, herbivorous mammals belong to the family Rhinocerotidae and are characterized by their thick, armor-like skin and one or two horns on their snouts. The name “rhinoceros” originates from the Greek words “rhino” (nose)

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Classification of Equus Caballus (Horse)

EQUUS CABALLUS (HORSE)

Introduction Equus caballus, better known as the domestic horse, is a symbol of grace, power, and loyalty that has left an indelible mark on human history. This extraordinary animal, domesticated around 4,000–6,000 years ago, has transformed societies through its unmatched utility in transportation, agriculture, warfare, and leisure. Equus caballus belong to the family Equidae, sharing

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Classification of Platanista Gangetica (Ganges River Dolphin)

PLATANISTA GANGETICA (GANGES RIVER DOLPHIN)

Introduction The Ganges River dolphin (Platanista gangetica), also referred to as the “Susu” or the “blind dolphin,” is a freshwater dolphin endemic to the Indian subcontinent. It is one of the few species of freshwater dolphins globally and holds immense ecological and cultural importance. These unique mammals have evolved specialized adaptations for their freshwater habitat

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Classification of Phoca (Seal)

PHOCA (SEAL)

Introduction The genus Phoca, which includes some of the world’s most iconic seals, belongs to the family Phocidae, commonly referred to as “true seals” or “earless seals.” These marine mammals are globally recognized for their streamlined bodies, lack of external ear flaps, and exceptional adaptations for aquatic life. Seals of the genus Phoca are critical

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