Fundamental unit of life : Assignments SA-1–IX Biology
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Q1 Write the main function of leucoplast.
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Q2 What is the function of SER in liver cells of vertebrates?
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Q3 Why the RER appears rough?
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Q4 Why viruses are not supposed to be living?
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Q5 What is a nucleoid?
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Q6 Why dry raisins placed in water swell up?
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Q7 In which part of a plant chromoplasts are found?
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Q8 Where are genes located?
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Q9 What will happen if we keep a plant cell or animal cell in a (i) Hypotonic solution (ii) Hypertonic solution iii) Isotonic solution.
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Q10 Explain the importance of osmosis for living beings?
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Q11 Give the historical development of cell theory.
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Q12 Who coined the term “cell “ and how?
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Q13 Write the contribution of (a) Robert Hooke, (b) Leeuwenhoek (c) Robert Brown
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Q14 Draw a large diagram of an animal cell as seen through aan electron microscope. Label the parts that carry on the function of Respiration, secretion, protein synthesis, transport of material.
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Q15 Which substance is responsible for transfer of characters from one generation to another?
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Topic – Tissues Assignments SA-1–IX Biology
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Q1 Which cells can contract and relax?
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Q2 Name the substance that makes cork compact.
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Q3 What are root hair?
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Q4 What is transpiration?
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Q5 What is aerenchyma?
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Q6 Name the parenchyma tissue which has chlorophyll.
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Q7 Where is meristemetic tissue found in plants?
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Q8 What is the difference between bone and cartilage?
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Q9 Where are tendons and ligaments found?
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Q10 Describe the functions of xylem. Write the function of each component.
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Q11 What are complex tissues? Write their different kinds.
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Q12 What are cork cells?
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Q13 What are stomata? Write about their structure and function?
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Q14 What are protective tissues?
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Q15 Write the characteristics and functions of collenchyma.
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Q16. On the basis of structural and functional difference, write the characteristics of plant and animal tissues.
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Topic - Improvement in food resources :Assignments SA-1–IX Biology
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Q1. What are milch animals?
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Q2. Name two cattle breeds which show excellent resistance of diseases.
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Q3. Mention two signs of a healthy animal.
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Q4. Name any two local varieties of bees that are used for commercial honey production in India.
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Q5. How is the use of manures beneficial for our environment?
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Q6. List the important preventive measures to control weeds.
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Q7. What are the advantages of bee keeping?
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Q8. What are the main elements of animal husbandry?
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Q9. Give the merits and demerits of fish culture?
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Q10. Write the modes by which insects affect the crop yield.
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Q11. Why is excess use of fertilizers detrimental for the environment?
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Q12. Define the terms hybridization and photoperiod.
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Q13. Differentiate between compost and vermicompost?
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Q14. What is green manure?
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Q15. What do you understand by organic farming?
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Related Post: 9th Biology Cell- the fundamental unit of life
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