10th Standard English Medium Science Subject Breeding and Biotechnology Book Back 1 Mark Questions with Solution Part - I

10th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. Pusa Komal is a disease resistant variety of _________.

    (a)

    sugarcane

    (b)

    rice

    (c)

    cowpea

    (d)

    maize

  2. The miracle rice which saved millions of lives and celebrated its 50th birthday is _______.

    (a)

    IR 8

    (b)

    IR 24

    (c)

    Atomita 2

    (d)

    Ponni

  3. We can cut the DNA with the help of

    (a)

    scissors

    (b)

    restriction endonucleases

    (c)

    knife

    (d)

    RNAase

  4. DNA fingerprinting is based on the principle of identifying _______ sequences of DNA

    (a)

    single stranded

    (b)

    mutated

    (c)

    polymorphic

    (d)

    repititive

  5. In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes respectively are

    (a)

    n = 7 and x = 21

    (b)

    n = 21 and x = 21

    (c)

    n = 7 and x = 7

    (d)

    n = 21 and x = 7

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