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NEET-XII-Biology

Previous Year Paper year:2022

with Solutions - page 5
 
  • Qstn #45
    What is the role of large bundle shealth cells found around the vascular bundles in `` C _{4} `` plants ?
    (A)To protect the vascular tissue from high light intensity
    (B)To provide the site for photorespiratory pathway

    (C)To increase the number of chloroplast for the operation of Calvin cycle
    (D)To enable the plant to tolerate high temperature
    digAnsr:   C
    :
  • Qstn #46
    Transposons can be used during which one of the following ?
    (A)Gene sequencing
    (B)Polymerase Chain Reaction

    (C)Gene silencing
    (D)Autoradiography
    digAnsr:   C
    :
  • Qstn #47
    Match the plant with the kind of life cycle it exhibits :
    List I List II
    a Spirogyra i Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte
    b Fern ii Dominant haploid free-living gametophyte
    c Funaria iii Dominant diploid sporophyte alternating with reduced gametophyte called prothallus
    d Cycas iv Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte
    Choose the correct answer from the options given below:
    (A)
    (a) - (ii),
    (b) - (iv),
    (c) - (i),
    (d) - (iii)
    (B)
    (a) - (iv),
    (b) - (i),
    (c) - (ii),
    (d) - (iii)

    (C)
    (a) - (ii),
    (b) - (iii),
    (c) - (iv),
    (d) - (i)
    (D)
    (a) - (iii),
    (b) - (iv),
    (c) - (i),
    (d) - (ii)
    digAnsr:   C
    :
  • Qstn #48
    Addition of more solutes in a given solution will :
    (A)not affect the water potential at all
    (B)raise its water potential

    (C)lower its water potential
    (D)make its water potential zero
    digAnsr:   C
    :
  • Qstn #49
    The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood. (a) It is also called as the earlywood (b) In spring season cambium produces xylem elements with narrow vessels (c) It is lighter in colour (d) The springwood along with autumnwood shows alternate concentric rings forming annual rings (e) It has lower density Choose the correct answer from the options given below:
    (A)
    (c),
    (d) and
    (e) Only
    (B)
    (a),
    (b),
    (d) and
    (e) Only

    (C)
    (a),
    (c),
    (d) and
    (e) Only
    (D)
    (a),
    (b) and
    (d) Only
    digAnsr:   C
    :
  • Qstn #50
    Match List - I with List - II.
    List I List II
    a Metacentric chromosome i Centromere situated close to the end forming one extremely short and one very long arms
    b Acrocentric chromosome ii Centromere at the terminal end
    c Sub-metacentric iii Centromere in the middle forming two equal arms of chromosomes
    d Telocentric chromosome iv Centromere slightly away from the middle forming one shorter arm and one longer arm
    Choose the correct answer from the options given below:
    (A)
    (a) - (i),
    (b) - (ii),
    (c) - (iii),
    (d) - (iv)

    (B)
    (a) - (iii),
    (b) - (i),
    (c) - (iv),
    (d) - (ii)
    (C)
    (a) - (i),
    (b) - (iii),
    (c) - (ii),
    (d) - (iv)
    (D)
    (a) - (ii),
    (b) - (iii),
    (c) - (iv),
    (d) - (i)
    digAnsr:   B
    :
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