+1 Second Revision Test 2019

11th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

Time : 02:30:00 Hrs
Total Marks : 70
    16 x 1 = 16
  1. The term "Bacteriophage" is coined by ____________.

    (a)

    Twort

    (b)

    Luria

    (c)

    d' Herelle

    (d)

    Pasteur

  2. When the root is thick and fleshy, but, does not taken a definite shape, it said to be

    (a)

    Nodulose root

    (b)

    Tuberous root

    (c)

    Monilliform root

    (d)

    Fasiculated root

  3. Fused tepaIs are called ______________.

    (a)

    Personate

    (b)

    Ligulate

    (c)

    Apotepalous

    (d)

    Syntepalous

  4. Which organelle is associated in the formation of basal granules, cillia and flagella?

    (a)

    Golgi apparatus

    (b)

    Centrosome

    (c)

    Mitochondria

    (d)

    Lysosome

  5. A living organism is differentiated from non- living structure based on

    (a)

    Reproduction

    (b)

    Growth

    (c)

    Metabolism

    (d)

    Movement

  6. The second largest animal phylum is:

    (a)

    Ctenophora

    (b)

    Arthropoda

    (c)

    Mollusca

    (d)

    Coelenterata

  7. Presence of gills in the tadpole of frog indicates that

    (a)

    fishes were amphibious in the past

    (b)

    fishes involved from frog -like ancestors

    (c)

    frogs will have gills in future

    (d)

    frogs evolved from gilled ancestor

  8. After a long deep breath, we do not respire for some seconds due to

    (a)

    more CO2 in the blood

    (b)

    more O2 in the blood

    (c)

    less CO2 in the blood

    (d)

    less O2 in the blood

  9. What will happen if the stretch receptors of the urinary bladder wall are totally removed?

    (a)

    Micturition will continue

    (b)

    Urine will be continue to collect normally in the bladder

    (c)

    There will be micturition

    (d)

    Urine will not collect in the bladder

  10. Severe hearing loss occurs with frequent or prolonged exposure to sound with intensities greater than _____________

    (a)

    100dB

    (b)

    90dB

    (c)

    120dB

    (d)

    120dB

  11. Spermatogenesis in mammalian testes is controlled by

    (a)

    Luteinising hormone

    (b)

    Follide stimulating hormone

    (c)

    FSH and Prolactin

    (d)

    GH and Prolactin

  12. __________ is not a characteristic of leghorn.

    (a)

    Small size

    (b)

    Meat production

    (c)

    Single comb

    (d)

    Wattles with brown colour

  13. When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?

    (a)

    Xylem would be on top and the phloem on the bottom

    (b)

    Phloem would be on top and the xylem on the bottom

    (c)

    Xylem would encircle the phloem

    (d)

    Phloem would encircle the xylem

  14. Embolism during ascent of sap refers

    (a)

    cavitation in phloem

    (b)

    gas bubble replacing the water in xylem

    (c)

    disappearance of gas from xylem

    (d)

    undisturbed water column

  15. A plant growing in a tree as epiphyte accumulates malic acid in dark and cells contains large storage vacuoles. Identify the of type of pathway that takes place in this plant.

    (a)

    C4pathway

    (b)

    Glycolate Metabolic pathway

    (c)

    Di carboxylic acid pathway

    (d)

    CAM pathway

  16. Seed dormancy allows the plants to

    (a)

    overcome unfavourable climatic conditions

    (b)

    develop healthy seeds

    (c)

    reduce viability

    (d)

    prevent deterioration of seeds

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

  19. Describe the Shapes of apopetalous actinomorphic in corolla.

  20. Define mesokaryotes.

  21. Why are Echinoderms so-called?

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

  23. Which type of WBC increase in its amount during allergic reactions? Write a few words of it.

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

  25. Name the filaments present in the sarcomere.

  26. What happens to the drones after mating flight?

  27. Explain" Sunken Stomata"?

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

  29. What is 'Agent orange'?

  30. 6 x 3 = 18
  31. Who is called as founder of modern bacteriology? Mention his contribution?

  32. Explain the different types of placentation with example.

  33. Write a short note on Chitin.

  34. Give the location of clitellum and spermathecal openings in Lampito mauritii.

  35. Write a note on BMI.

  36. Which segment is the site of secretion and regulated reabsorption of ions and pH homeostasis?

  37. What is the significance of melanin?

  38. What are the Nutritive values of fishes?

  39. How are barks classified?

  40. Name the plant growth regulators?

  41. 4 x 5 = 20
    1. Draw and label the ultra structure of a bacterium.

    2. What is the significance of Molecular taxonomy?

    1. How respiration takes place in cockroach?

    2. What does the following term defines.
      (i) Heart beat, (ii) Systole, (iii) Diastole, (iv) 'Iub' and 'dub' sound of the heart, (v) Cardiac cycle.

    1. 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?

    2. Write the causes for diabetes mellitus and diabetes insipidus.

    1. Explain the process of photo respiration / C2 cycle.

    2. Describe the mechanism of photoperiodic induction of flowering.

*****************************************

TN 11th Standard Biology free Online practice tests

Reviews & Comments about 11th Standard Biology Second Revision Test 2019

Write your Comment