আউফবাউ নীতি পরমাণুতে ইলেকট্রনসমূহ বিভিন্ন অরবিটালে তাদের শক্তির উচ্চক্রম অনুসারে প্রবেশ করে। অর্থাৎ ইলেকট্রনসমূহ প্রথমে নিম্নশক্তির অরবিটাল পূর্ণ করে এর পরে ক্রমান্বয়ে উচ্চশক্তির অরবিটালে… Read More »আউফবাউ নীতি কী? আউফবাউ নীতির ব্যাখ্যা
হুন্ডের নীতি একই শক্তিসম্পন্ন বিভিন্ন অরবিটালে ইলেকট্রনগুলো এমনভাবে অবস্থান করবে যেন তারা সর্বাধিক সংখ্যায় অযুগ্ম বা বিজোড় অবস্থায় থাকতে পারে। এই সব অযুগ্ম ইলেকট্রনের… Read More »হুন্ডের নীতি কি? হুন্ডের নীতি ব্যাখ্যা।
ছোট গল্প ২০৫০ সাল ……! – দাদু একটা সমস্যায় পরে গেছি । – কী সমস্যা দাদু? – আমার কাছে কিছু পুরাতন বই আছে … –… Read More »স্বরবর্ণ ডট কম নিয়ে নির্বাচিত ছোট গল্প – Swarborno.কম
Encystment in Euglena is a protective mechanism adopted by the organism in response to unfavorable environmental conditions. When conditions become unfavorable, such as scarcity of… Read More »Encystment of Euglena
Hermit crabs are fascinating and incredible creatures that are loved by both kids and adults alike. With their unique habits and behaviors, they have earned… Read More »10 Fun Facts About Hermit Crabs
Hermit crabs are crustaceans that are used as pets also. These crabs lack shells on their abdominal portion and that’s why they need an extra… Read More »Hermit Crabs’ Tank Setup (Step by Step) 2023
The Indian bullfrog (Hoplobatrachus tigerinus) is a large and robust species of frog native to South Asia, including India, Bangladesh, Nepal, and Pakistan. Previously its… Read More »Hoplobatrachus tigerinus (Previously Rana tigrina) | Indian Bull Frog
Labeo rohita, commonly known as the Rohu or Rui, is a freshwater fish species belonging to the family Cyprinidae. It is native to the Indian… Read More »Labeo rohita – Rohu / Rui
The major classes of vertebrates are Cyclostomata, Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves, and Mammalia. The general characteristics of these phyla are given below: Cyclostomata The… Read More »General Characters of All Classes of Vertebrates.
Hermit crabs are decapod crustaceans. They have adapted to live in empty gastropod shells. In this article, we will learn about the general characteristics of… Read More »General Characteristics of Hermit Crabs
Hirudinaria is a genus of medicinal leeches that belong to the phylum Annelida. These leeches are hermaphroditic and possess a complex digestive system adapted for… Read More »The Digestive System of Hirudinaria | Leech | Diagram
Hirudinaria granulosa, also known as the Indian cattle leech, is a species of leech that is found in freshwater habitats in Bangladesh, India, Pakistan, Myanmar,… Read More »External Morphology of Hirudinaria granulosa | Leech | Diagram
Amoeba proteus is a single-celled organism that moves by a process called amoeboid movement. This type of movement is achieved through the extension and retraction… Read More »Locomotion or Movement of Amoeba proteus | Diagram
Systematic Position / Classification Phylum: Retaria Class: Globothalamea Order: Rotaliida Family: Elphidiinae Genus: Elphidium Species: Elphidium crispum Habit and Habitat It is a free-living, marine,… Read More »Characteristics, Habit & Habitat of Elphidium crispum
What is the Placoid Scale? Placoid scales, also known as dermal denticles, are a type of scale that is found on the skin of cartilaginous… Read More »Structure, Development & Homology of Placoid Scales | Shark | Scoliodon