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All Chapter 2 Marks

11th Standard

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Biology

Time : 04:00:00 Hrs
Total Marks : 252
    Answer All The Following Question:
    126 x 2 = 252
  1. Write the distinguishing features of Monera.

  2. Why do farmers plant leguminous crops in crop rotations/mixed cropping?

  3. Compare the two forms of holocarpic and eucarpic thallus.

  4. What is mycorrhiza?

  5. Mention two characters shared by gymnosperms and angiosperms?

  6. Do you agree with the statement 'Bryophytes I need water for fertilization'? Justify your answer.

  7. List out the ways of vegetative propagation by Pteridophytes.

  8. Associate the following features with groups in which they first appeared.
    (a) Vascular tissues
    (b) Seeds inside fruits
    (c) Heterospore production

  9. How root climbers differ from stem climber?

  10. Compare sympodial branching with monopodial branching.

  11. What is Aquatic plants?

  12. Musa is a monocarpic perennial. Give possible reason.

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

  14. Give the technical terms for the following:
    (a) A sterile stamen
    (b) Stamens are united in one bunch
    (c) Stamens are attached to the petals

  15. What do you know about Helicoid?

  16. Write a note on Balausta fruit.

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

  18. Classify gamopetalae.

  19. Describe Karyotaxonomy.

  20. Bring out the significance of phase contrast microscopy.

  21. State the protoplasm theory.

  22. What is Holocentric Chromosomes?

  23. List out the enzymes of lysosomes.

  24. Write any three significance of mitosis.

  25. What are APC?

  26. What is closed mitosis?

  27. Why is meiosis essential in sexually reproducing organisms?

  28. Define the term haploid.

  29. Define Amitosis.

  30. List out various stages of prophase of Meiotic cell division.

  31. What is meant by metaphase plate?

  32. Define interkinesis

  33. Explain the term 'Mitogen'

  34. Define Anastral condition in cell division.

  35. What are the Drawbacks of Amitosis?

  36. What is equational division?

  37. What is metaphase plate?

  38. What is cell plate?

  39. Name the two types of nuclear division.

  40. What do you mean by G0 stage?

  41. What is the role of MPF in Cell cycle?

  42. List out the disadvantages of Amitosis.

  43. Enumerate the stages of mitosis

  44. What do you understand by independent assortmment?

  45. Define Mitogen. Give an example.

  46. What are mitotic poisons.

  47. Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown & one blank component" X" in it.

    CATEGORY COMPOUND
    Cholesterol Guanine
    Amino acid NH2
    Nucleotide Adenine
    Nucleoside Uracil
  48. Distinguish between nitrogenous base and a base found in inorganic chemistry.

  49. Why proteins undergo conformational changes after its synthesis?

  50. Draw the structure of transfer RNA.

  51. Differentiate between probiotics and pathogenic bacteria

  52. Why mule is sterile in nature?

  53. What is INOTAXA

  54. Define family?

  55. Choose the term that does not belong in the following group and explain why it does not belong? Notochord, cephalisation, dorsal nerve cord and radial symmetry.

  56. List the functions of air bladder in fishes.

  57. Define moulting or ecdysis.

  58. Name some flightless birds.

  59. Some epithelia are pseudostratified. What does this mean?

  60. Differentiate white adipose tissue from brown adipose tissue.

  61. Why Areolar connective tissue is called tissue fluids.

  62. Differentiate Simple epithelium and Compound epithelium.

  63. How do earthworms breathe?

  64. Name the visual units of the compound eyes of cockroach.

  65. Define the following: (i) Morphology, (ii) Anatomy

  66. Define "vermiculture."

  67. Why are villi present in the intestine and not in the stomach?

  68. Name the endocrine part of the pancreas.

  69. Why does our mouth becomes watery when we eat the food of our choice?

  70. Name the respiratory organs of flatworm, earthworm, fish, prawn, cockroach and cat.

  71. Resistance in the airways is typically low. Why? Give two reasons.

  72. What is inspiration?

  73. What are the cells of the squamous epithelial cells of the alveoli?

  74. Distinguish between mitral valve and semi lunar valve.

  75. Right ventricular wall is thinner than the left ventricular wall Why

  76. What is Pus?

  77. Explain the role of Rh factor.

  78. Differentiate cortical from medullary nephrons

  79. What is the effect of aldosterone on kidneys and where is it produced?

  80. Why are aquatic animals mostly ammonotelic in nature?

  81. Write the name of the cycle which converts amino acid to urea?

  82. Name the filaments present in the sarcomere.

  83. How is rigor mortis happened?

  84. The pelvic girdle is a heavy, strong girdle. How does its structure reflect its function?

  85. How are joints classified?

  86. Why are we getting running nose while crying?

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

  88. Name the meninges.

  89. Name the parts of the organ of equilibrium involved in the following functions.
    Linear movement of the body.

  90. Comment on homeostasis.

  91. Write the functions of CCK.

  92. Mention two functions of cortisol.

  93. Why is the effect of peptide hormones short lived?

  94. Name any two trees on which lac insect grows.

  95. What are the advantages of artificial insemination?

  96. Name the two types of bee hives,

  97. Name some methods employed in aquaponics.

  98. Why the cells of sclerenchyma and tracheids become dead?

  99. What are albuminous cells?

  100. What is "bundle cap" or "hard bast"?

  101. In a forest, if the bark of a tree is damaged by the horn of a deer, How will the plant overcome the damage?

  102. In which season the vessels of angiosperms are larger in size, why?

  103. Why do anatomists use the word 'porous' to describe wood?

  104. What is the unique feature of wood as a raw material?

  105. If the concentration of salt in the soil is too high and the plants may wilt even if the field is thoroughly irrigated. Explain

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

  107. Give examples of imbibition

  108. Draw a schematic diagram to show reverse osmosis.

  109. 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?

  110. Write the role of nitrogenase enzyme in nitrogen fixation? 

  111. What are NPK fertilizers?

  112. What is unique about Neottia and Monotropa.

  113. Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450nm & Group B to the light of the wavelength of 500- 550nm. Compare the photosynthetic rate of the 2 groups giving reasons.

  114. When there is plenty of light and the higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.

  115. Define action spectrum.

  116. Why are plants that consume more than the usual 18ATP to produce one molecule of glucose in the tropical regions?

  117. Respiratory quotient is zero in succulent plants. Why?

  118. Where does citric acid cycle take place? Why?

  119. Explain the RQ of respiratory substrates in case of anaerobic respiration.

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

  121. What is the significance of abscission?

  122. How does ABA reduce the rate of transpiration?

  123. Write the normal values of total RBC and WBC

  124. What does a pace maker do?

  125. What is modern electronic stethoscope? And write its uses

  126. What is the purpose of using barium and iodine in X-rays?

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