+1 First Revision Test Model

11th Standard

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Biology

Time : 02:30:00 Hrs
Total Marks : 70
    I.Choose the suitable best answer:
    16 x 1 = 16
  1. ___________ sps is an endophyte in coralloid roots of Cycas.

    (a)

    Gloeocapsa

    (b)

    Scytonema

    (c)

    Nostoc

    (d)

    Azolla

  2. Bryophyllum and Dioscorea are example for

    (a)

    Foliar bud, apical bud

    (b)

    Foliar bud, cauline bud

    (c)

    Cauline bud, apical bud

    (d)

    Cauline bud, foliar bud

  3. Match the following

    A)Samara i)Strawberry
    B)Utricle ii)Acer
    C)Cremocarp iii)Abutilon
    D)Carcerulus iv)Helianthus
    E)Achene v)Chenopodium
    F)Cypsela vi)Carrot
    (a)

    A - i), B- ii), C- Hi), D- iv), E- v), F- vi)

    (b)

    A-vi), B-v), C-iv), D-iii), E-ii), F-i)

    (c)

    A - iv), B- vi), C- iii), D- i), E- v), F-ii)

    (d)

    A - ii), B-v), C- vi), D- iii), E- i), F- iv)

  4. The carbohydrate molecules of cell membrane are:

    (a)

    Long chain polysaccharides

    (b)

    Short chain polysaccharides

    (c)

    Long chain glyco proteins

    (d)

    Short chain glycolipids

  5. Every unit of classification regardless of its rank is

    (a)

    Taxon

    (b)

    Variety

    (c)

    Species

    (d)

    Strain

  6. Johnston's organ is present in

    (a)

    antenna of insect

    (b)

    head of cockroach

    (c)

    abdomen of housefly

    (d)

    abdomen of spider

  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. During inspiration, the diaphragm

    (a)

    expands

    (b)

    unchanged

    (c)

    relaxes to become dome-shaped

    (d)

    contracts and flatten

  9. Concentration of urine depends upon which part of the nephron

    (a)

    Bowman's capsule

    (b)

    Length of Henle's loop

    (c)

    P.C.T.

    (d)

    Network of capillaries arising from glomerulus

  10. 'Lazy gates' condition is seen in _____________

    (a)

    Repolarization

    (b)

    Hyperpolarization

    (c)

    Depolarization

    (d)

    Synapse

  11. The structure which connects the hypothalamus with anterior lobe of pituitary gland is the

    (a)

    Dendrites of neuro hypophysis

    (b)

    Axon's of neurohypophysis

    (c)

    Bands of white fibers from cerebellar region

    (d)

    Hypophysial portal system

  12. Assertion (A): The cocoons of silkworm are soaked in hot water.
    Reason (R) : The gum that binds the silk threads is softened.

    (a)

    A and R are right

    (b)

    R explains A

    (c)

    A and R are wrong

    (d)

    R does not explain A

  13. Refer to the given figure and select the correct statement

    i. A, B, and C are histogen of shoot apex. 
    ii. A Gives rise to medullary rays.
    iii. B Gives rise to the cortex. 
    iv. C Gives rise to epidermis

    (a)

    i and ii only

    (b)

    ii and iii only

    (c)

    i and iii only

    (d)

    iii and iv only

  14. _________ observed correlation between respiration and anion absorption.

    (a)

    Lundegardh

    (b)

    Donnan

    (c)

    Bennet

    (d)

    Overton

  15. All carotenoid pigments have ___________carbon atoms.

    (a)

    30

    (b)

    40

    (c)

    50

    (d)

    20

  16. If the diameter of the pulley is 6 inches, length of the pointer is 10 inches and distance travelled by pointer is 5 inches. Calculate the actual growth in length of plant.

    (a)

    3 inches

    (b)

    6 inches

    (c)

    12 inches

    (d)

    30 inches

  17. II. Answer any four in both (Bio-Zoo and Bio-Bot)
    4 x 2 = 8
  18. What do you infer from the term pycnoxylic?

  19. Describe the shapes of Apopetalous zygomorphic in Corolla.

  20. What is Tonoplast?

  21. Give some examples for bony fishes coming under Osteichthyes.

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

  23. What is the significance of biconcave shape of RBC?

  24. Which vessels drain filtered blood from the kidneys?

  25. How is rigor mortis happened?

  26. Name the following.
    1. The largest bee in the colony.
    2. The kind of flight which the new virgin queen takes along with the drones out of the hive.

  27. Explain Bast fibres?

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

  29. What is Scarification?

  30. II. Answer any Three in both (Bio-Zoo and Bio-Bot) Q.No 32,37 is compulsory

    6 x 3 = 18
  31. Name the three components of gram negative cell wall.

  32. Differentiate between aggregate fruit with multiple fruit.

  33. Mention the Test for Proteins.

  34. Differentiate between peristomium and prostomium in earthworm.

  35. What is the function of the cardiac sphincter?

  36. If the afferent arteriole of the nephron constricts, what happens to the GFR in that nephron? If the efferent arteriole constricts what happens to the GFR in that nephron? Assume that no auto regulation takes place.

  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. What is sigmoid curve? Mention their phases

  41. IV. Answer all in details :
    4 x 5 = 20
    1. Describe the Respiration life processes in Bacteria.

    2. Explain 'Geocarpic fruit' with an example.

    1. How respiration takes place in cockroach?

    2. Explain the process of coagulation of blood.

    1. Identify the following structures and explain their significance in renal physiology?
      (a) Juxtaglomerular apparatus
      (b) Podocytes
      (c) Sphincters in the bladder
      (d) Renal cortex

    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.

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