Online Biology Notes for students
Well developed and concentrated nervous system. Consists of 3 parts: the central, peripheral, and sympathetic nervous system. Figure: Nervous System of Earthworm. Image Source: Meridian Technical Charter High School. 1. Central nervous system It comprises of the anterior nerve ring or brain ring and the posterior ventral nerve cord. Nerve ring Comprises of cerebral ganglia … Read more Nervous System of Earthworm
Earthworms are simple, commonplace creatures, are of greater economic value to human beings in different ways. Our earth would be an afar different place without them. They have both useful and harmful aspects of mankind. Useful effects of Earthworm In Agriculture They are beneficial but sometimes they may damage the young and tender plants. They … Read more Economic Importance of Earthworm
Earthworms have well-developed sense organs or receptor organs. Simple in structures. Reacts to a number of stimuli with the help of 3 types of sense organs: epidermal receptor, buccal receptor, and photoreceptor. Figure: Sense organs of Earthworm. Image Source: Studio Biology. Epidermal receptors Distributed all over the epidermis but more abundant on lateral sides and … Read more Sense Organs of Earthworm
The three-domain system was first introduced by Carl Woese in 1990 that is why its called Carl Woese’s Classification. This classification system also is known as the Six Kingdoms and Three Domains Classification because it divides the life forms into three domains and six kingdoms. The three-domains of Carl Woese’s Classification system include archaea, bacteria, … Read more Three-domain system (Carl Woese’s Classification)
What is the Plague? Plague, a term originally applied to any widespread disease which causes great mortality. The name is now confined to Bubonic Plague, an infectious disease of animals and humans caused by the bacterium Yersinia pestis. History In AD 541, the first great plague pandemic spread throughout the world from its origins in … Read more Plague and its forms caused by Yersinia pestis
What are Aspirins? Aspirin is the precursor of traditional Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) and is the most commonly used salicylic acid derivative. Aspirin is considered as a standard to compare other anti-inflammatory agents. NSAIDs are a group of different chemical agents, that show differences in their antipyretic, analgesic, and anti-inflammatory activities. The mechanism of action … Read more Aspirin and other salicylic acid derivatives
Digestive System of Earthworm consists of the alimentary canal and the digestive glands. Image Source: https://digestivesystemgroup2.weebly.com/earth-worm-lumbricus-terrestris.html Earthworm Alimentary Canal Complete straight tube throughout the length of the body from mouth to anus. Mouth constitutes its anterior and anus its posterior openings receptively. Functionally regionated into various parts i.e. mouth and buccal chamber, pharynx, esophagus, gizzard … Read more Digestive System of Earthworm
Medical Disclaimer: The information presented on this page is only for academic and study purposes and must not be used for the purpose of treatment. If you are not feeling well, please consult with your physician or doctor. Today, the world is still under the threat of pandemic COVID-19. Different countries are in an attempt in … Read more Use of Convalescent Plasma to treat COVID-19 patients (FAQs)
Toxin manufacturing is the potential of microorganisms known as toxigenesis. It is used by microbes especially by bacteria to induce disease. Bacterial toxins have two types on the basis of their chemical composition called endotoxin, exotoxin. Endotoxin are part of Gram-negative bacteria cell wall and exotoxin are secreted out of a cell by diffusion. These … Read more Endotoxin and Exotoxin with its types
Aerobic respiration refers to the concept of the breakdown of nutrients and the production of energy. Any organism, when consuming any nutritive material, the material goes through a series of biochemical reactions by which simple form of carbohydrates, proteins, and lipids are produced. After that, these produced compounds are further degraded and produces the energy … Read more Glycolysis 10 Steps with Diagram and ATP Formation