Admission Tests: Botany MCQs (Practice Test 1 of 104)

  1. Nucleotides are linked to one another in mRNA by

    1. Hydrogen bonds

    2. Hydmphobic bonds

    3. Glycoside bonds

    4. Phosphodiester bonds

  2. Is chromosomes are the chromosomes with

    1. Identical sizes

    2. Identical arms

    3. Identical gene content

    4. Identical shapes

  3. Match List I (Distinguishing feature based on chromosomal appearance) with List II (Stage of meiosis) and select the correct answer:

    List-I List-II
    1. Terminal zed chiasmata

    2. Exchange of segments of chromatids

    3. Synopsis of homologous chromosomes

    4. Appearance of chiasmus

    1. Pachytene

    2. Zygotene

    3. Diakinesis

    4. Leptotene

    • A
    • B
    • C
    • D
      • 4
      • 2
      • 3
      • 1
      • 3
      • 1
      • 2
      • 4
      • 2
      • 4
      • 1
      • 3
      • 2
      • 4
      • 3
      • 1
  4. Which one of the following vectors can accommodate the largest size of DNA?

    1. Plasmid

    2. Cosmid

    3. Lambda phage

    4. Yeast artificial chromosomes

  5. Which one of the following statements about meiosis in plants is NOT correct?

    1. The cytomictic channels in the medicates of higher plants permit passage of a number of cytoplasm components from on cell to the other to maintain the meiotic synchrony

    2. There is a conspicuous reappearance of a large proportion of ribosome population during zymogene in the meiocyte

    3. During early prophase, the chromosomes condense a clump onto one part of nuclear envelop to constitute the so-called synizesis stage

    4. Synaptonemal complex of zymogene is the structure responsible for chromosomal alignment and pairing

  6. Crossing of F1 heteizygous with the homozygous recessive parent is known as

    1. Test cross

    2. Poly cross

    3. Reciprocal process

    4. Top cross

  7. A diploid population having individuals with different chromosome numbers ranging from 2N + 3 to 2N − 3 is a

    1. Polyploidy

    2. Ditriploid

    3. Ancuploid

    4. Trainload

  8. Consider the following features:

    1. Population consists of interbreeding groups of individuals

    2. Population does not form the basic unity of study in population genetics.

    3. Gene frequency is the important single index characterizing the population

    Which of these are characteristic of a

    Mendel Ian population?

    1. 1 and 2

    2. 1 and 3

    3. 2 and 3

    4. 1, 2 and 3

  9. Match List I with List II and select the correct answer:

    List-I List-II
    1. Recombinant DNA

    2. Agro bacterium

    3. Sticky ends

    4. Plasmids

    1. Marker gene-reporter gene

    2. DNA lipase

    3. T DNA

    4. Restriction enzymes

    • A
    • B
    • C
    • D
      • 3
      • 4
      • 1
      • 2
      • 3
      • 4
      • 2
      • 1
      • 4
      • 3
      • 1
      • 2
      • 4
      • 3
      • 2
      • 1
  10. Which one of the following is NOT a PCR-based molecular marker?

    1. RAPD

    2. AP-PCR

    3. DAF

    4. RELP

  11. Gamma garden is used for

    1. Growing plantlet produced by tissue culture

    2. Eradicating pathogens from infecting. Plants

    3. Growing genetically engineered plants on trail basis

    4. Mutation breeding for crop improvement

  12. Which one of the following enzymes is NOT made up of polypeptides?

    1. Ligase

    2. Ribosome

    3. Lysozyme

    4. Chemotropism

  13. Primary transcript processing the involves axons originating in primary transcripts of different genes being legated together is

    1. Trans-splicing

    2. Primary splicing

    3. Intone-splicing

    4. Exon-splicing

  14. Consider the following statements: Hybrid plants can show

    1. Sterility

    2. Mosaicism

    3. Crossing over

    4. Vigour

    5. Homozygosis

    Which of the above statements are correct?

    1. 2, 3 and 5

    2. 2, 4 and 5

    3. 1, 2 and 4

    4. 1, 3 and 4

  15. Which one of the following condition/set of conditions is essential for successful exploitation of heterocyst?

    1. High heterolysis effect

    2. Male sterility

    3. Male sterility and high heterocyst

    4. High heterocyst and a method for commercial production of hybrid seeds

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