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The importance of respiration in the life of any organism is immense. The process of respiration continues in every living cell of the plant or animal.Stopping the process of respiration means the death of the organism or the cells of that organism. The importance of respiration in plant life is briefly described below: 1. Energy supply to the organism: Energy is needed to manage every process of life (which is a feature of life), and this energy comes through the process of respiration. So the real importance of the respiratory process in the life of any organism lies in conducting all the biological processes of the organism through energy production. 2. Food preparation:  The carbon dioxide emitted in the process of respiration is used directly or indirectly in photosynthesis and produces food. Food that protects plants as well as the entire animal kingdom. 3. Mineral salt absorption : Plants play an important role in the process of respiration in the absorption...

Pavlov completed this groundbreaking study from 1891 to 1900.He used to put meat powder in the dog's mouth in a special way at a certain time every day.If meat powder was put in the dog's mouth, saliva would be excreted. This is a normal process.He would then ring the bell a few seconds before putting the meat powder in the dog's mouth.At first the dog would raise its ears when it heard the bell. But it would not salivate.From then on, when the dog rang the bell, he realized that he would be fed now, and when he heard the sound of the bell, saliva came out of his mouth.The dog became accustomed to this process and was seen salivating only when the bell rang.He saw this as a combination of physiology and psychology. Pavlov was awarded the Nobel Prize in Medicine in 1904 for his research. Any one natural stimulus can naturally create a stimulus.But if an animal is accustomed to associating a neutral stimulus with this natural stimulus, then only a neutr...

One of the legendary actors of this subcontinent. Salman Shah (1971-1996) was a Bangladeshi actor and model.His career begins with television drama.One of the most popular actors of the 90s decade became.One of his reasons was his veteran style, for extraordinary performance.Salman Shah's acting was absolutely different. Did you know? Salman Shahs Style copyed by Bollywood Superstar Salman Khan and Shahrukh Khan . In 1993, his first film was released 'keyamoth theke keyamoth' .In just five years he worked in 27 films.All the films were business well.One of them is the ' heart ' (1994), ' affection ' (1994), ' Danemohar ' (1995).In this, the film ' Danamohar ' earns 28 million US $. Sadly, Salman Shah died on September 6, 1996.Her body was recovered while hanging with his house's ceiling fan.There are many mystery about his death.Salman Shah's news of death Salman Shah's some crazy fan also commit...

O  F    T  O   P  I  C 5.Karachi,Pakistan : This is the former capital of Pakistan and the largest city.It is Pakistan's most populous city and fifth most populous city in the world.Located in the center of Pakistan's art, trade, cultural, economic, education, politics.Karachi area is 3001 square kilometers. Karachi's population is 22 million.Another name of Karachi is 'Light City'.This city lives 98% Muslims.The main languages of this city are Sindhi, Urdu. Karachi has an average literacy rate of 75%. 4.Kolkata,India : Kolkata is Cultural capital of India.This city is the east-india main center of education, Economic and cultural.The population of kolkata is 15 million. The area of Kolkata  is 1986.68 sq km.This city 88% of Hindus , 7% of Muslims, 5% of other religions live in people.The main language of Kolkata is Bengali.kolkata has an average literacy rate of 88.3%. 3.Delhi,India : Delhi is the second largest city and c...

[ বাংলায় পড়তে নিচের দিকে স্ক্রল করুন ] The details about vaccinations are mentioned below: Vaccination are called a way to protect the body from external germs (viruses, bacteria) infections.In 1976,Dr. Edward Jenor discovered the first cottage vaccin of the spring.If any disease is caused by the germs, the part of the disease is weakened by the body and entering the body of the biological body, the organism can create disease resistance to the body of that germs. Vaccination or vaccine is not a medication. It is only a suburbs to strengthen our body's defense system.Through the vaccine, we can easily recognize our defense system to our defense system of disease microbes.As a result, our body is not easily infected by germs. READ MORE----------- (1)Bangladesh national parks (2)What is 'Darwinism'and Darwinism theory? (3)Migration of winter bird টিকা বা ভ্যাক্সিনেশন সম্পর্কে বিস্তারিত নিম্নে উল্লেখ করা হলো: বহিরাগত জীবাণু (ভাইরাস, ব্যাক্টেরিয়া) সংক্রমন থেকে দেহকে...

[ বাংলায় পড়তে নিচের দিকে স্ক্রল করুন ] Migration of winter bird To achieve food breeding and optimal environment, animals go from one place to another and later called migration.When the snow falls in winter in the Winter-chief country, the lack of food.As a result, those birds go to a nearby country to survive.Winter birds travel through thousands of miles in search of food and favorable environment.Later, when the environment crisis cut, he returned to the land again. In winter, the birds came from the septicipation of Siberia and other winter-chief countries in Bangladesh .At this time, these birds made the house at home, lay eggs, increase the dynasty. These birds again went to their country if the arrival of the summer.Mother's birds are also with their children leave our country in their country. ---------- Bangladesh National parks ---------- ---------- বাংলাদেশের জাতীয় উদ্যানসমূহ-- ------ শীতের পাখির মাইগ্রেশন খাদ্য প্রজনন ও অনুকূল পরিবেশ প্রাপ্তির লক্ষ্যে প্রা...

If you want to read in ENGLISH  CLICK HERE   ইংরেজি প্রকৃতি বিজ্ঞানী চার্লস রবার্ট ডারউইন(১৮০৯-১৮৮২) ১৮৫৮-৫৯ সালে তার "আরজিন অব স্পিশিজ বাই মিনস অব ন্যাচারাল সিলেকশন" বইতে বিবর্তন সম্পর্কিত তাঁর মতবাদ প্রকাশ করেন।বিবর্তন সম্পর্কে ডারউইনের এই মতবাদকে ডারউইনিজম বলে। কয়েকটি তও্ব ও তথ্যের উপর ডারউইনিজম প্রতিষ্টিত।নিম্নে এগুলো উল্লেখ করা হলো : (১)বংশবৃদ্ধির উচ্চাহার : একটি জীব প্রজননের সময় প্রচুর সংখ্যয় বংশবৃদ্ধি করে।কিন্তু এরা সবাই বাঁচে না।যেমন একটি ইলিশ মাছ প্রজনন ঋতুতে বিশ লক্ষ ডিম পাড়ে। (২)প্রাকৃতিক সম্পদের সীমাবদ্ধতা : একটি জীবের জন্মহারের তুলনায় তার খাদ্য, বাসস্থান ও অন্যান্য প্রকৃতিক সম্পদ কম। (৩)জীবন সংগ্রাম: প্রাকৃতিক সম্পদ সীমাবদ্ধতার কারণে জীবন সংগ্রাম অনিবার্য হয়ে ওঠে।নিজ নিজ অস্তিত্ব রক্ষার লক্ষ্যে এ প্রতিযোগিতাকে জীবন সংগ্রাম বলে।জীবন সংগ্রাম তিন ধরনের হয়,নিম্নে এহুলো উল্লেখ করা হলো: (ক)অন্তঃজাতী সংগ্রাম: খাদ্য ও বাসস্থানের নিয়ে নিজের প্রজাতির মধ্যে যে সংগ্রাম হয় তাকে অন্তঃপ্রজাতী সংগ্রাম বলে।যেমন~ হরিণে হরিণে সংগ্রাম। (খ)আন্তঃজাতী সংগ্রাম: ভিন্ন প্রজাতির জীবদের মধ্...