Biology is an important subject to others. A biology student can get admission to the medical field after passing an intermediate class but he must take the MDCAT exam. In that exam, maximum marks candidates get a chance to be admission to the Medical field. As you know the exams included most of the basic and conceptual questions. The basic biology questions are located in Class 9 Biology textbooks. However, textbooks are vast and have more data, so a lower-level student can’t find conceptual and important points without proper guidance.
So for the ease of students, we are providing Class 9 Biology Notes in PDF at ilmgah.pk. These notes are prepared by college-level associate professors. These teachers also teach the higher level students and they have ideas about student concepts and IQ levels. These notes are made in an easy way so that a normal student can understand each topic and term easily.
To access the 9th Class chapter Biology Notes, you must check the table below.
Chapter Wise 9th Class Biology Notes Summary
Biology is not as a vast subject as Mathematics. However, some of the biology chapters are too lengthy and take more time to complete the syllabus on time. There are a total of 9 chapters of biology. Out of 9, 3 chapters are lengthy and have conceptual data. So let’s discuss all topics of biology.
Chapter 1 – Introduction to Biology: In the first chapter of biology, discussed the Biology definition, its divisions, and branches. Also relate biology with other science subjects like chemistry, Physics, etc. We also have discussed the level of organizations (unicellular, colonial, multicellular) with examples.
Chapter 2 – Biological Method: In Chapter 2 of Biology, you can learn the biological method and find biological problems. This chapter also discusses the steps of biological problems i.e. Observations, Hypotheses, Deductions, Experiments, Theory, and laws. In this chapter, we also learn, about malaria disease, how the experiments got successful results, and how their medicines (cinchona) were discovered.
Chapter 3 – Biodiversity: The biodiversity chapter discusses Classification and its aims and also taxonomic hierarchies. In chapter five kingdom classification is discussed briefly. Here, we also saw Binomial Nomenclature and its significance. At the end of this chapter deforestation and some other organizations are also discussed.
Chapter 4 – Cell: As we know cell is the basic unit of life. In Chapter 4, you can completely understand the cell concept. This chapter also discusses the organelles and cell structures. In this chapter famous animal and plant tissues are also explained.
Chapter 5 – Cell Division: Cell division is an important topic where a student understands the life and growth process. Cell divide in two ways like mitosis and meiosis. In Chapter 5, mitosis and meiosis, their importance is also included.
Chapter 6 – Enzymes: Enzymes speed up the biological process. In enzyme anabolism, catabolism topics are available. You can also see models of enzymes that are lock and key model and induced fit model. Some factors that affect enzyme action are also provided in this chapter.
Chapter 7 – Bioenergetics: Bioenergetics is an important process and here most of the conceptual questions are taken in board exams. So must understand this chapter from our provided notes. In this chapter two types of energies are discussed i.e. K.E and potential energy. The major and important topics of this chapter are photosynthesis and its mechanism and Aerobic, and anaerobic respiration and their mechanism are given in detail with proper diagrams.
Chapter 8 – Nutrition: In the nutrition chapter, the balanced diet plan and the importance of protein, lipids, carbohydrates, minerals, and vitamins are completely discussed. Here, the complete digestion process with proper diagrams is also given in detail. Some disorders like malnutrition and elementary canal disorders are also briefly provided here.
Chapter 9 – Transport in Plants: The last and lengthy chapter of 9th class biology is Transport in Plants. Here, you can learn the plant parts, opening, and closing of stomata, xylem and phloem, water and food transport in plants, and others. The human circulatory system i.e. Blood, heart, Heartbeat, and Blood group systems are briefly discussed in this chapter.