11th Third Revision Exam Question Paper 2019

11th Standard

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Biology

Time : 02:30:00 Hrs
Total Marks : 70
    16 x 1 = 16
  1. How many organisms in the list below are autotrophs?
    » Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces,
    » Trypanosoma, Porphyra, Wolffia.

    (a)

    Four

    (b)

    Five

    (c)

    Six

    (d)

    Three

  2. Example for negatively geotropic roots

    (a)

    Ipomoea, Dahlia

    (b)

    Asparagus, Ruellia

    (c)

    Vitis, Portulaca

    (d)

    Avicennia, Rhizophora

  3. Arrangement of sepals and petals in flower bud is called ________.

    (a)

    adhesion

    (b)

    aestivation

    (c)

    placentation

    (d)

    cohesion

  4. Lysosomes release theirenzymes outer side the cell to digestother cells _________________

    (a)

    Autolysis

    (b)

    Phagocytosis

    (c)

    Exocytosis

    (d)

    Peroxisomes

  5. Who coined the term biodiversity

    (a)

    Walter Rosen

    (b)

    AG Tansley

    (c)

    Aristotle

    (d)

    AP de Candole

  6. The minute pores on the body of sponges are called

    (a)

    oseuliem

    (b)

    ostia

    (c)

    choanocytes

    (d)

    spongocoel

  7. The head region of Cockroach __________________ pairs of _____________ and shaped eyes occur

    (a)

    One pair, sessile compound and kidney shaped

    (b)

    Two pairs, stalked compound and round shaped

    (c)

    Many pairs, sessile simple and kidney shaped

    (d)

    Many pairs, stalked compound and kidney shaped

  8. CO2 is transported through blood to lungs as

    (a)

    carbonic acid

    (b)

    oxyhaemoglobin

    (c)

    carbamino haemoglobin

    (d)

    carboxy haemoglobin

  9. A person who is on a long hunger strike and is , surviving only on water, will have

    (a)

    Less amino acids in his urine

    (b)

    Macula densa cells

    (c)

    Less urea in his urine

    (d)

    More sodium in his urine

  10. __________ is a mixed nerve.

    (a)

    Hypoglossal

    (b)

    Optic

    (c)

    Olfactory

    (d)

    Facial

  11. Which of the given option shows all wrong statements for thyroid gland.
    (i) It inhibits process of RBC formation
    (ii) It helps in maintenance of water and electrolytes
    (iii) Its more secretion can reduce blood pressure
    (iv) It Stimulates osteoblast

    (a)

    (i) and (ii)

    (b)

    (iii) and (iv)

    (c)

    (i) and (iv)

    (d)

    (i) and (iii)

  12. Say True or False.
    A worker bee feeding on Royal Jelly becomes queen bee __________

    (a)

    True

    (b)

    False

  13. In Gymnosperms, the activity of sieve tubes are controlled by

    (a)

    Nearby sieve tube members

    (b)

    Phloem parenchyma cells

    (c)

    Nucleus of companion cells

    (d)

    Nucleus of albuminous cells.

  14. Cobalt chloride strips are used to find ___________

    (a)

    Presence of stomata in leaf

    (b)

    Rate of transpiration

    (c)

    Guttation

    (d)

    All the above

  15. Dicarboxylic Acid pathway refers to

    (a)

    C3 pathway

    (b)

    C4 pathway

    (c)

    C2 pathway

    (d)

    CAM

  16. Select the wrong statement from the following:

    (a)

    Formative phase of the cells retains the capability of cell division.

    (b)

    In elongation phase development of central vacuole takes place.

    (c)

    In maturation phase thickening and differentiation take place.

    (d)

    In maturation phase, the cells grow further.

  17. 8 x 2 = 16
  18. What do you infer from the term pycnoxylic?

  19. What you know about Imperfect or unisexual flower? 

  20. Name any three odoured plastids

  21. What are pseudocoelomates?

  22. How does the male frog attract the female for mating?

  23. What are basophils?

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

  25. Which is the only jointless bone in human body?

  26. Write the peculiar characters of duck.

  27. Differentiate sieve cells and sieve tubes

  28. 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?

  29. What is critical day length?

  30. 6 x 3 = 18
  31. Write the characters of living things.

  32. Differentiate between aggregate fruit with multiple fruit.

  33. Mention the role of Inhibitors of Enzyme.

  34. Head of cockroach is called hypognathous. Why?

  35. Write a note on assimilation

  36. Which part of the autonomic nervous system is involved in micturation process?

  37. Define the two phase's involved in transmission of nervous impulses

  38. Give the economic importance of prawn fishery

  39. Mention two important products obtained from bark.

  40. List the types of Senescence.

  41. 4 x 5 = 20
  42. Give the salient features of the class Deuteromycetes.

  43. Write the Botanical Description of Allium cepa

  44. Explain the reproductive system of frog

  45. What is erythroblastosis foetalis? How is it caused? Can it be treated?

  46. Identify the biological term.
    Homeostasis, excretion, glomerulus, urea, glomerular filtration, ureters, urine, Bowman's capsule, urinary system, reabsorption, micturition, osmosis, glomerular capillaries via efferent arteriole, proteins.
    (a) A liquid which gathers in the bladder.
    (b) Produced when blood is filtered in a Bowman's capsule.
    (c) Temporary storage of urine.
    (d) A ball of inter twined capillaries.
    (e) A process that changes glomerular filtrate into urine.
    (f) Removal of unwanted substances from the body.
    (g) Each contains a glomerulus.
    (h) Carry urine from the kidneys to the bladder.
    (i) Contains urea and many useful substances.
    (j) Blood is filtered through its walls into the Bowman's capsule.
    (k) Scientific term for urination.
    (I) Regulation of water and dissolved substances in blood and tissue fluid.
    (m) Carry urine from the kidneys to the bladder.
    (n) Consists of the kidneys, ureters and bladder.
    (o) Removal of useful substances from glomerular filtrate.
    (p) The process by which water is transported in the proximal convoluted tubule.
    (q) Where has the blood in the capillaries I surrounding the proximal convoluted tubule come from?
    (r) What solute the blood contains that are not present in the glomerular filtrate?

  47. Briefly explain the structure of thyroid gland.

  48. Differentiate photosynthesis in plants and Bacterial photosynthesis.

  49. Describe the mechanism of photoperiodic induction of flowering.

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