What is Heart attack ? A blockage of blood flow to the heart muscle. A heart attack is a medical emergency. A heart attack usually…
What is Lipids: Introduction of Lipids: Bloor (1943) defined the lipids as - "Lipids are naturally occurring heterogeneous organic compounds which are insoluble in water…
What is Protein: Proteins are complex nitrogenous organic bio-polymers of amino acids showing greatdiversity in their organization and are of prime biological importance. What foods…
General characters of Urochordata: Characters Habitat = Generally sedentary. Test of tunicine= Present Coelom= Absent in adult Notochord and nerve cord= Absent Metamerism= Absent in…
Reproductive system of Herdmania: Herdmania is bisexual or hermaphrodite. Self fertilization does not occur due to protogynous condition. (A) GONADS There is present a pair…
Slides of phylum Anelida: T.S. Pheretima (Earthworm) - Pharyngeal region (a) Body wall is formed of outer cuticle, single layered epidermis, outer layers of circular…
Digestive system of Herdmania: The digestive system of herdmania is divided into two parts- (1) Alimentary canal (2) Digestive gland (1) Alimentari canal:The alimentary canal…
What is Herdmania? SYSTEMATIC POSITION Phylum: Chordata Class: Ascidicea Order: Pleurogona Genus: Herdmania Introduction of Herdmania: Herdmania is a simple ascidian. It is popularly called…
General characters of phylum Annelida: Habitat. These are mostly aquatic and are either fresh-water (e.g. Hirudinaria) or marine (eg. polychaetes like Nereis, Aphrodite). Some are…
What is Raja or skate? Classification: Phylum Chordata Order: Hypotremata Class: Chondrichthyes Genus: Raja Habitat: Raja is a marine cartilage fish which lies at the…