SCIENCE ASSIGNMENT I ( ) CLASS-IX BIOLOGY. Topic - THE FUNDAMENTAL UNIT OF LIFE M.M:25 Q1. Name the scientists who presented cell theory.
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1 SCIENCE ASSIGNMENT I ( ) CLASS-IX Topic - THE FUNDAMENTAL UNIT OF LIFE M.M:25 Q1. Name the scientists who presented cell theory. (1) Q2. Name the cell organelle which acts as Protein factory of the cell. Where is it located? (1) Q3. What are leucoplasts? Give their function. (2) Q4. What is plasmolysis? What happens to a plasmolyzed cell when it is placed immediately in a hypotonic solution? (2) Q5. Why are mitochondria and plastids called semiautonomous organelles? (2) Q6. Why does the skin of your finger shrink when you wash clothes for a long time? (2) Q7. Very briefly describe the following: (3) a) Lysosomes as autophagous organelles during starvation. b) Membrane biogenesis c) Oxysomes of Mitochondria Q8. Differentiate Prokaryotic cell and Eukaryotic cell. (3) Q9. State what happens when: (4) a) Dry apricots are left for sometime in pure water and later transferred to sugar solution? b) A Red blood cell is kept in concentrated saline solution? c) The plasma membrane of a cell breaks down? d) Golgi apparatus is removed from the cell? Q10. Draw a neat diagram of plant cell and label any three parts which differentiate it from animal cell. (5)
2 SCIENCE ASSIGNMENT II ( ) TOPIC - TISSUES M.M:20 Q1. Name the chemical substance which acts as cement and hardens the cell walls of sclerenchyma. (1) Q2. Why is blood considered to be a connective tissue? (1) Q3. Name the tissue which allows the aquatic plants to float. (1) Q4. What are stomata? (1) Q5. Why are skeletal muscles known as striated muscles? (1) Q6. Write any four distinctive features of cardiac muscles. (2) Q7. Differentiate between meristematic and permanent tissue. (2) Q8. Describe the structure and function of different types of epithelial tissues. Draw well labelled diagrams. (3) Q9. Why are xylem and phloem called complex tissue? How are they different from one another? (3) Q10. Draw well labelled diagrams of various types of muscles found in human body. (5)
3 SCIENCE ASSIGNMENT - III ( ) TOPIC - IMPROVEMENT IN FOOD RESOURCES MM:25 Q1. What are the three stages at which improvement of crops can be done? (2) Q2. What are the agricultural seasons in India? Name the crops grown during each of the seasons. (2) Q3. What is Genetically Modified (GM) crop? Name any one such crop which is grown in India. (2) Q4. Define: (2) i) Vermicompost ii) Green manure Q5. Discuss various methods for weed control. (2) Q6. What are macro-nutrients and why are they so called? (2) Q7. Compare the use of manures and fertilisers in maintaining soil fertility. (3) Q8. How do storage grain losses occur? (3) Q9. Differentiate between Layers and Broilers. (3) Q10. Give two examples of each: (4) (a) Cereals (b) Oilseeds (c) Fodder crops (d) pulses
4 SCIENCE ASSIGNMENT - IV ( ) TOPIC: WHY DO WE FALL ILL MM:25 Q1. What is health? (1) Q2. Define vaccination. (1) Q3. Expand - (2) i) WHO ii) HIV iii) AIDS iv) ORS Q4. What is an antibiotic? Give 2 examples. (2) Q5. Identify the target organ of : (2) a) hepatitis b) fits c) pneumonia d) fungus Q6. Differentiate communicable and non-communicable diseases. (3) Q7. Explain various modes of transmission of infectious diseases. (3) Q8. Write a note on the principle of treatment. (3) Q9. Explain the various general ways of preventing diseases. (3) Q10. Name the causal organism of the following diseases. (5) Typhoid, Malaria, Measles, Acne, AIDS, Diarrhoea, Dengue, Sleeping Sickness, Elephantiasis, Ringworm.
5 SCIENCE ASSIGNMENT - V ( ) TOPIC: DIVERSITY IN LIVING ORGANISMS M.M:25 Q1. Define Biodiversity. (1) Q2. Who is known as the Father of Taxonomy? (1) Q3. Why bryophytes are called amphibians of the plant kingdom? (2) Q4. Differentiate between cryptogams and phanerogams. (2) Q5. What is five kingdom classification? Who proposed it? (2) Q6. Differentiate between monocots and dicots. (2) Q7. Define the terms and give one example of each: (3) i) Bilateral symmetry ii) Coelom iii) Triploblastic Q8. Differentiate between annelids and arthropods. (3) Q9. What is notochord? Describe its functions. (3) Q10. Explain all the important characteristics of the given phyla: (6) a) Platyhelminthes b) Coelenterates c) Chordates
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More informationwww.students-resource.com Location Entry Codes As part of CIE s continual commitment to maintaining best practice in assessment, CIE uses different variants of some question papers for our most popular
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