11th Public Exam March 2019 Important Creative Questions and Answers

11th Standard

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Biology

Time : 02:30:00 Hrs
Total Marks : 150
    75 x 2 = 150
  1. Differentiate Homoiomerous and Heteromerous lichens.

  2. Write the distinguishing features of Monera.

  3. What is Homeostasis?

  4. What are coprophilic Fungi?

  5. Define Anabolism.

  6. Define bacteriology. Mention the term 'animalcules'.

  7. List out the criteria undertaken for Whittaker's classification.

  8. Why viruses are not included in the category of microorganisms?

  9. What is plectostele? Give example.

  10. Name the sex organs seen in Rhodophyceae.

  11. Define genera. Give reason.

  12. Bryophytes maintain soil texture- comment.

  13. How root climbers differ from stem climber?

  14. Describe the modification of decumbent.

  15. Name the body parts of the following plants which is modified for food storage.

  16. Find out the floral formula for a bisexual flower with bract, regular, pentamerous, distinct calyx and corolla, superior ovary without bracteole.

  17. What are monoecious plants?

  18. What is a Syconus?

  19. Whether parthenocarpic fruits develop endosperm? Why?

  20. Where will you place the plants which contain two cotyledons with cup shaped thalamus?

  21. Name the timber yielding plants of Fabaceae.

  22. Describe the structure of Fabaceae family based on root, stem and leaf.

  23. State the protoplasm theory.

  24. Define 'magnification' of a Microscope.

  25. Define magnification. How will you calculate it?

  26. What does'S' refer in a 70S and an 80S ribosomes?

  27. Write any three significance of mitosis.

  28. What are APC?

  29. Define C- Value.

  30. Distinguish between nitrogenous base and a base found in inorganic chemistry.

  31. What is macromolecules?

  32. Why mule is sterile in nature?

  33. Compare closed and open circulatory system.

  34. List three features that characterise bony fishes

  35. Distinguish between open type of circulation and closed type of circulation.

  36. What are ctenidia?

  37. Why blood is considered as a typical connective tissue?

  38. Name two heritable connective tissue disorders

  39. Classify multicellular exocrine glands based on their structure.

  40. What are earthworm casts?

  41. Comment on the functions of alary muscles?

  42. What is Vermicomposting?

  43. Why is the blood of cockroach not responsible for transporting respiratory gases?

  44. What is succus entericus?

  45. Mention the names of Pancreatic enzymes.

  46. Name the enzyme that catalyses the bicarbonate formation in RBCs.

  47. What is Tidal volume?

  48. How does gaseous exchange take place in the alveoli?

  49. Distinguish between mitral valve and semi lunar valve.

  50. What will happen if the number of platelets is less in the blood?

  51. What vessels carry blood to the kidneys? Is this blood arterial or venous?

  52. Why are aquatic animals mostly ammonotelic in nature?

  53. Name the filaments present in the sarcomere.

  54. What is SMGA?

  55. Which myofilament has the binding sites for calcium?

  56. Cornea transplant in humans is almost never rejected. State the reason.

  57. What is the significance of pineal body?

  58. What is the role of antidepressants?

  59. Write the role of oestrogen in ovulation.

  60. Name the hormones produced by Neurohypophysis.

  61. What is seed lac?

  62. Mention the advantages of MOET.

  63. What is harvesting in fish culture?

  64. Mention the most significant function of Bundle sheath.

  65. Apical meristem of Root is subterminal. Why?

  66. Differentiate Porous or Hard wood and Non porous or Soft wood ?

  67. How phosphorylase enzyme open the stomata in starch sugar interconversion theory?

  68. Differentiate channel protein and carrier protein.

  69. Differentiate Osmotic pressure and Osmotic ' potential.

  70. Plant A in a nutrient medium shows whiptail disease plant B in a nutrient medium shows a little leaf disease. Identify mineral deficiency of plant A and B?

  71. Name the roots produced by parasites to obtain nourishment from host.

  72. A tree is believed to be releasing oxygen during night time. Do you believe the truthfulness of this statement? Justify your answer by giving reasons?

  73. Name the types of fermenation.

  74. What are the parameters used to measure growth of plants?

  75. What is critical day length?

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