Important Notes of Biology Class 9
Full Book Important Notes of Biology Class 9 written by Honorable Sir Mr. Shazam Khanzada Suib. These notes are very helpful in the preparation for students of the 9th class Biology Urdu Medium and these are according to the paper patterns of all Punjab boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Full book important Short Questions with Answers of Biology in Urdu Medium.
- By Reading Important Notes of Biology Class 9 explore detailed explanations and examples to enhance your understanding.
- Full book important Multiple Choice Questions (MCQs), Short Questions with Answers of Biology in Urdu Medium.
- How would you distinguish the biomolecules from other molecules?
- What is the criterion for
classifying a biomolecule as micromolecule or macromolecule?
- Describe the levels of organization of life.
- Define biotechnology.
- What do you mean by horticulture and how is it related to agriculture?
- Justify mathematics as an integral part of the scientific process.
- Differentiate between theory and law.
- Quantitative observations are better in biological method. How?
- Describe some of the programs running in Pakistan for the conservation of biodiversity.
- What is the difference between the modes of nutrition of fungi and animals?
- It is difficult to use the criterion of interbreeding to define species of unicellular organisms. Why?
- How are taxonomy and systematics related?
- Differentiate between the terms “extinct” and “endangered”.
- What are the contributions of Whittaker, Margulis and Schwartz in taxonomy?
- Explain the phenomena involved in the passage of matter across cell membrane.
- Describe how turgor pressure develops in a plant cell.
- State the relationship between cell function and cell structure.
- Describe the differences in prokaryotic and eukaryotic cells.
- How is mitosis significant?
- Describe the events that occur during the phases of meiosis-I.
- Describe the significance of meiosis.
- Describe necrosis and apoptosis.
- How does pH affect enzyme activity?
- What characteristic of enzymes makes them specific for substrates?
- Briefly describe the factors that affect the activity of enzymes.
- Describe the lock and key mechanism of enzyme action.
- Outline the processes involved in photosynthesis?
- State how the varying light intensity carbon dioxide concentration and temperature affect the
rate of photosynthesis?
- Draw a comparison of aerobic and anaerobic respiration.
- How will you compare respiration and photosynthesis?
- Which foods contain calcium and iron and what role these minerals play in our bodies?
- Why are water and dietary fibres considered important in our diets?
- Define balanced diet. How would you relate it with age, gender and activity?
- Describe how protein energy malnutrition, mineral deficiency diseases and over intake of
nutrients are the major forms of malnutrition?
- How would you advocate the unequal distribution of food as the major factor that contribut
to famine.
- What are the health risks if we take more saturated fatty acids in our diet?
- How can the deficiency of vitamin A cause blindness?
- How will you differentiate between bolus and chyme?
- Which sphincters play role in the movement of food in and out of stomach?
- Stomach is an organ of the digestive system, but it also secretes a hormone. What hormone is
it and what function it performs?
- What four chambers make the human heart and how blood flows through these chambers?
- Compare the structure and function of an artery, a vein and a capillary.
- Draw diagrams which can illustrate the origins, locations and target areas of the main arteries
in human blood circulatory system.
- Draw diagrams which can illustrate the areas and locations of the main veins in human blood
circulatory system.