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Latest ICAR AIEEA PG Plant Biotechnology Exam Question (Objective Questions), MCQ in English

Subjects : Plant Biotechnology

Question Bank ICAR PG Plant Biotechnology Exam - English
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Plant Biotechnology

Question 1Single Answer
The cell was first discovered by
  1. A
    Robert Brown
  2. B
    Robert Hooke
  3. C
    Flemming
  4. D
    None of these
Question 2Single Answer
 Nucleus was first discovered by
  1. A
    Robert Hooke
  2. B
    Robert Brown
  3. C
    Flemming
  4. D
    Anderson
Question 3Single Answer
Nucleus consists of
  1. A
    Nuclear envelope
  2. B
    Nucleolus
  3. C
    Chromatin
  4. D
    All of these
Question 4Single Answer
Primary constriction is also called
  1. A
    Centromere
  2. B
    Kinetochore
  3. C
    Chromomere
  4. D
    a & b above 
Question 5Single Answer
The sub stages of Interphase are
  1. A
    G1 & G2
  2. B
    G1 & S
  3. C
    G1, G2, &S
  4. D
    G2 & S
Question 6Single Answer
Nucleolus reappears at the end of
  1. A
    Prophase
  2. B
    Metaphase
  3. C
    Anaphase
  4. D
    Telophase
Question 7Single Answer
Meiosis provides opportunities for
  1. A
    Crossing over
  2. B
    Recombinations
  3. C
    Segregation
  4. D
    All of these
Question 8Single Answer
Chromosomes become shorter and thicker during
  1. A
    Prophase
  2. B
    Metaphase
  3. C
     Anaphase
  4. D
    Telophase
Question 9Single Answer
Maximum length of Chromosomes is observed during
  1. A
    Interphase
  2. B
    Prophase
  3. C
    Metaphase
  4. D
     Anaphase
Question 10Single Answer
The gametic Chromosome number of a true diploid
  1. A
    Basic number
  2. B
    Haploid number
  3. C
    Somatic number
  4. D
    None of these
Question 11Single Answer
Crossing over occurs at meiotic phase
  1. A
    Pachytene
  2. B
    Zygotene
  3. C
    Diplotene
  4. D
    Dikinesis
Question 12Single Answer
If one strand of DNA has sequence CATTAGCAT, then its complementary RNA will base sequence
  1. A
    GTAATCGTA
  2. B
    GTAATGATE
  3. C
    TAGATGGTA
  4. D
    GUAAUCGUA
Question 13Single Answer
When F1, is crossed with recessive parent, it is called
  1. A
    Reciprocal cross
  2. B
    Monohybrid cross
  3. C
    Dihybrid cross
  4. D
    Test cross
Question 14Single Answer
An individual having two copies of the same allele is called
  1. A
    Heterozygous
  2. B
    Homozygous
  3. C
    Allelomorph
  4. D
    None of the above
Question 15Single Answer
Double helix structure of DNA was deduced by
  1. A
    Watson & Crick
  2. B
    Watson & Morgan
  3. C
    Watson & Rosalind
  4. D
    Watson & Pauling
Question 16Single Answer
Triticale is a hybrid between
  1. A
    Wheat & Chickpea
  2. B
    Wheat & Rye
  3. C
    Wheat & Barley
  4. D
    Wheat & Rice
Question 17Single Answer
A Nullisomic individual is represented by
  1. A
    2n-1
  2. B
    2n + 1
  3. C
    2n - 2
  4. D
    2n + 2
Question 18Single Answer
In a triplet code, three RNA bases code for
  1. A
    I amino acid
  2. B
    2 amino acid
  3. C
    3 amino acid
  4. D
    Several amino acid
Question 19Single Answer
Within a gene, a unit of mutation is called
  1. A
    Hot spot
  2. B
    Cistron
  3. C
    Muton
  4. D
    Recon
Question 20Single Answer
Which of the following mutagens is a base analogue?
  1. A
    EMS
  2. B
    5 BU
  3. C
    EES
  4. D
    MMS
Question 21Single Answer
In plant breeding, undesirable linkages can be broken by
  1. A
    Recurrent selection
  2. B
    disruptive mating
  3. C
    Diallel selective mating
  4. D
    All of the above
Question 22Single Answer
Multiline variety is deliberate mixture of
  1. A
    Closly related lines
  2. B
    Isogenic lines
  3. C
    Unrelated lines
  4. D
    All of the above
Question 23Single Answer
Male sterility promotes
  1. A
    Autogamy
  2. B
    Homogamy
  3. C
    Allogamy
  4. D
    Dichogamy
Question 24Single Answer
Concept of crop ideotype was developed by
  1. A
    Adams (1982)
  2. B
    Donald (1968)
  3. C
    Jennings (1964)
  4. D
    None of the above
Question 25Single Answer
The difference between mean phenotypic values of the progeny of selected plants and original population is referred to as
  1. A
    Genetic advance
  2. B
    Selection differential
  3. C
    Genetic gain
  4. D
    None of the above
Question 26Single Answer
Callus refers to
  1. A
    A group of cells
  2. B
    A mass of unorganized cells
  3. C
    A mass of organized cells
  4. D
    all of the above
Question 27Single Answer
The process of producing several identical copies of gene sequence is referred to as
  1. A
    Gene cloning
  2. B
    Gene sequencing
  3. C
    Gene splicing
  4. D
    Micro cloning
Question 28Single Answer
Substitution of one purine by another purine is called
  1. A
    Addition
  2. B
    Deletion
  3. C
    Transition
  4. D
    Transversion
Question 29Single Answer
A process of synthesis of mRNA from a DNA template is known as
  1. A
    Translation
  2. B
    Transcription
  3. C
    Transduction
  4. D
    Transformation
Question 30Single Answer
The one gene one enzyme hypothesis was proposed by
  1. A
    Beadle & Ephrussi
  2. B
    Beadle & Tatum
  3. C
    Brenner
  4. D
    Crick
Question 31Single Answer
Existence of more than two alleles at a locus is referred as
  1. A
    Pseudo alleles
  2. B
    Multiple alleles
  3. C
    Iso alleles
  4. D
    None of the above
Question 32Single Answer
The terms exons and introns are related to
  1. A
    Overlapping genes
  2. B
    Jumping genes
  3. C
    Split gene
  4. D
    Pseudo gene
Question 33Single Answer
The quickest method for developing an improved variety is
  1. A
    Mass selection
  2. B
    Primary introduction
  3. C
    Domestication
  4. D
    Hybridization
Question 34Single Answer
Inbreeding of cross pollinated species leads to increase in
  1. A
    Homozygocity
  2. B
    Heterozygocity
  3. C
    Population mean
  4. D
    all of the above
Question 35Single Answer
The process of DNA synthesis from RNA is called
  1. A
    Reverse translation
  2. B
    Reverse transcription
  3. C
    Transcription
  4. D
    Transformation
Question 36Single Answer
What is the major function of the mitochondrion?
  1. A
    Produces proteins
  2. B
    Produce ATP
  3. C
    Serves as a system of tubules for
  4. D
    None of these transport of materials within the cell
Question 37Single Answer
Which of the following is not a part of the structure of DNA?
  1. A
    Phosphate
  2. B
    Thymine
  3. C
    Cytosine
  4. D
    Ribose
Question 38Single Answer
During which phase of mitosis does sister chromatids move away from each other and migrate to the poles of the spindle?
  1. A
    Prophase
  2. B
    Metaphase
  3. C
    Anaphase
  4. D
    Telophase
Question 39Single Answer
Spindle fibres attach to chromosomes at their:
  1. A
    Telomeres
  2. B
    Chromeres
  3. C
    Centromeres
  4. D
    Centrioles
Question 40Single Answer
The plant cell plate forms during which of these?
  1. A
    Prophase
  2. B
    Metaphase
  3. C
    Anaphase
  4. D
    Telophase
Question 41Single Answer
In a simple monohybrid cross with complete dominance, what is the genotypic ratio of dominant to recessive individuals in the offspring?
  1. A
    3:1
  2. B
    1:2:1
  3. C
    1:1
  4. D
    9:3:3:1
Question 42Single Answer
Which of the best describes polygenic inheritance? stom
  1. A
    One gene controls several characters
  2. B
    Several genes control one character
  3. C
    Sex hormones control the expression of the gene
  4. D
    There are many alleles for a single gene in a population of individuals
Question 43Single Answer
How many different genotypes are possible when there is a cross of two individuals may
are each heterozygous for two genes (a dihybrid cross)?
  1. A
    Three
  2. B
    Nine
  3. C
    Seven
  4. D
    Sixteen
Question 44Single Answer
If an individual contains two alleles for a particular gene and the two alleles are different from each other, the individual is said to be
  1. A
    Homozygous dominant
  2. B
    Homozygous recessive
  3. C
    Heterozygous
  4. D
    None of these
Question 45Single Answer
The physical location of a gene on a chromosome is the:
  1. A
    Locus
  2. B
    Allele
  3. C
    Centromere
  4. D
    Chiasmata
Question 46Single Answer
Crossing over takes place during
  1. A
    Leptotene
  2. B
    Zygotene
  3. C
    Pachytene
  4. D
    Diplotene
Question 47Single Answer
Metroglyph analysis is based on estimates of
  1. A
    Correlation
  2. B
    Mean
  3. C
    Variance
  4. D
    Covariance
Question 48Single Answer
Presence of linkage lead to high frequency of
  1. A
    Parental types
  2. B
    Recombination
  3. C
    New recombinants
  4. D
    None of these
Question 49Single Answer
Chromosome map is also known as
  1. A
    Genetic map
  2. B
    Linkage map
  3. C
    a & b above
  4. D
    None of these
Question 50Single Answer
Isogenic lines are easily produced by which of the following methods
  1. A
    Back cross method
  2. B
    Bulk method
  3. C
    Pedigree method
  4. D
    SSD method
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