সপ্তম অধ্যায় : গ্যাসীয় বিনিময়

Biology Chapter 7: Exchange Gases - This note discusses the gaseous exchange of plants and animals. Creative questionnaires and multiple choice questionnaires have been discussed on plant propagation and animal lungs.In addition to the student's text book, reading this note can help you to master the subject. Creative and multiple choice questionnaires will play a vital role in skill development.