Search for:

Tag Archives: spines

Porifera – The Biology of Sponges

This article reveals the Biology of Sponges (phylum Porifera) by studying the Morphology, Anatomy, Histology, and Physiology of Sponges. The author has also included the Reproduction and Development of Sponges.

Porifera is a phylum comprising of the multi-cellular invertebrate animals called Sponges. The term “Porifera” literally means “Pore Bearers”. The animals of this phylum have tiny pores in their body walls, and this characteristic feature is the basis of the name of this phylum.

Porifera includes very primitive multi-cellular animals having only the cellular level of body organization with no tissues and organs. In Porifera (sponges), only cells show division of labor for the purpose of performing specialized functions. All Poriferans, animals of the phylum Porifera, are aquatic with most of them being marine. Sponges are sessile (not mobile) organisms including both solitary and colony-forming types.

Continue reading →

This entry was posted in animals, Biology, biology education, Education, marine life, Science, Science education, zoology and tagged alteration of generations, Amebocytes, Ammonia, amoeba-like cells, Amoebocytes, Amphiblastula, Aplysinidae, Apopyles, Archaeocytes, Ascon type of Canal System, Asconoid sponges, asexual, Asexual Reproduction, asymmetrical, bath-sponge, Biology of Sponges, body organization, Body Wall, Branching, bristles, bud, Budding, Calcarea, calcareous, Calcite, Calcium Carbonate, Canal System, Choanocytes, Choanoderm, Chromocytes, classification of Sponges, collar cells, Collencytes, colloidal Silica, colony-forming, complex type of canal system, cross-fertilization, croup, Crown Sponge, Demospongiae, Dermal Pores, Development, diffusion, diffusion of gases, Digestion, division of labor, egg mother cell, endopinacoderm, endoskeleton, Euspongia, Excretion, excretory organs, Excurrent Canals, Exopinacoderm, female reproductive gametes, female sex cell, Fertilization, Fission, Flagellated Chambers, Flow of water, food vacuoles, freshwater, Gametogenesis, Gastral Epithelium, Gastrodermis, gemma, Gemmules, generation of sponges, Geodia, Germ cells, Gland cells, Grantia, haploid gametes, herbal doctors, hermaphrodite, Hexactinellida, in situ fertilization, Incurrent Canals, Internal buds, internal fertilization, intracellular, invertebrate, Iodine, larva, Leucon type of Canal System, Leuconoid sponges, Leucosolenia, life history, line of weakness, male reproductive gametes, male sex cells, marine sponges, meiosis, Mesenchyme, metabolic wastes, metamorphosis, methods of reproduction, Microscopic organisms, Monaxon spicules, Morphology, multi-cellular animals, muscle cells, Myocytes, nervous system, Nutrition, Oocyte, Oogenesis, Oscarella, oscula, Oscular Fringe, Osculum, Ostia, Ostium, ova, Ovum, Paragastric Cavity, Parenchymula, Pinacocytes, Pinacoderm, Plakina, planktons, Polyaxon spicules, Pore Bearers, pores, Porifera, Poriferans, Prosopyles, Radial Canals, radially symmetrical, Reduction Bodies, reduction body, regeneration, Reproduction, Respiration, respiratory organs, Scleroblasts, scleroprotein, Scypha, sessile, sex organs, sexual, Sexual Reproduction, siliceous, silicon, Skeleton of Sponges, sperm mother cell, Spermatocytes, Spermatogenesis, Spermatogonium, Spermatozoa, sperms, spica, spicules, spines, splitting, sponges, Spongia, Spongiidae, Spongilla, Spongin, Spongin fibers, Spongocoel, stolons, sulphur containing scleroprotein, Sycon, Sycon type of Canal System, Syconoid sponges, Tetraxon spicules, Thesocytes, treatment of Croup, Triaxon spicules, types of larvae, Urn Sponge, Zygote on 31/12/2013 by Dr. Aditya Sardana.

The Hedgehog – the Spiny Ball!!

5 Replies

The Hedgehog – the Spiny Ball!!

A Piece of Poetry, from the Pen of an Earnest Biologist (Aditya Sardana aka Adidarwinian), dedicated to The Hedgehog – the Spiny Ball!!

“Look out under the log,
There lives a hedgehog,
It does not appear when the Sun shines,
Only to appear in the night as a ball of spines.”

Hedgehogs are found in the Europe, Africa, and Asia. Hedgehogs are the insectivorous (feeding on insects; insectivores) animals belonging to the subfamily Erinaceinae of the family Erinaceidae of the order Erinaceomorpha of the class Mammalia. Other members of the family Erinaceidae include the gymnures (subfamily Galericinae). The name “hedgehog” comes from its occurrence in the hedges or hedgerows, the pig-like (hog-like) snout, and the pig-like deep guttural sound made by it while searching for food.

Continue reading →

This entry was posted in animals, biological marvels, Biology, Education, Original Quotes by Adidarwinian, Poems, Science, Science education, zoology and tagged adaptation, adult hedgehogs, Africa, African pygmy hedgehog, Amur hedgehog, animals, Asia, Atelerix albiventris, Atelerix algirus, Atelerix frontalis, Atelerix sclateri, auricle, back or upper surface, ball of spines, band of muscles, barbless spines, bare-bellied hedgehog, birds, body of a hedgehog, Brandt's hedgehog, breeding seasons, breeding time, burrows, bushes, carrion, class Mammalia, cultivated fields, Daurian hedgehog, dead and decaying flesh, deep guttural sound, desert habitat, desert hedgehog, dorsal surface, dunes, ear, earnest Biologist, eastern European hedgehog, eating both plants and animals, Erinaceidae, Erinaceids, Erinaceinae, Erinaceomorpha, Erinaceus amurensis, Erinaceus concolor, Erinaceus europaeus, Erinaceus roumanicus, Europe, European hedgehog, external projecting part, feed on insects, four-toed hedgehog, front or lower surface, fruits, full protection to the body, Galericinae, gardens, globular in shape, grasslands, gymnures, heat radiation, Hedgehog, hedgehog is immune, Hedgehogs, hedgerows, hedges, Hemiechinus auritus, Hemiechinus collaris, hibernate, hibernate in the winter, hog-like, Hugh's hedgehog, immune to the snake bite, Indian hedgehog, Indian long-eared hedgehog, insect-eating mammals, insectivores, insectivorous, insectivorous mammals, insects, interesting point, into a ball, Jhau Chua, long-eared hedgehog, mammalia, Mesechinus dauuricus, Mesechinus hughi, modified hairs, Natural habitats, nocturnal, nocturnal mammals, north African hedgehog, northern white-breasted hedgehog, omnivorous, outwardly projected spines, Paraechinus aethiopicus, Paraechinus hypomelas, Paraechinus micropus, Paraechinus nudiventris, pastures, Piece of Poetry, pig-like, pinna, pinnae, pins in a pincushion, poetry, pointed, projecting spines, recognized species, reptiles, rolls up its body, roots, sand dunes, scrubs, semi-desert, sharp projecting spines, slugs, snails, snake bite, snakes, snout, soft fur, soft spines, solitary life, Somali hedgehog, southern African hedgehog, species of hedgehogs, sphincter, spines, spiny area, Spiny Ball, steppe, subterranean channels, temperate fields, terrestrial animals, tubular, under the logs, ventral surface, western European hedgehog, young ones of hedgehogs on 29/09/2013 by Dr. Aditya Sardana.

Patients’ Reviews

Gentle & Prompt Cure Without Side Effects

Dr. Aditya Sardana listened to my problem very patiently, analysed my reports carefully and then gave me best Electro-Homeopathic medicine accordingly.

My problem was successfully treated by him within few days of starting the treatment. Moreover, there were no side effects.

I highly recommend this gentle Electro-Homeopathic herbal treatment provided by Dr. Aditya Sardana to all patients seeking prompt cure without side effects.

Lakshita Bisht

Lakshita Bisht