Plant Breeding MCQs | Plant Breeding Multiple Choice Questions and Answers

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Questions
1 Breeding for disease resistance requires
A a good source of resistance
B Planned hybridisation
C Diseases test
D all of these

Answer: all of these
2 Polyploidy is induced through
A Irradiation
B Mutagenic chemicals
C Ethylene
D Colchicine

Answer: Colchicine
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3 Pure line breed refers to
A Heterozygosity Only
B Homozygosity Only
C Homozygosity And Self Assortment
D Heterozygosity And Linkage

Answer: Homozygosity Only
4 Bagging is done to
A Avoid cross pollination
B Avoid self pollination
C Achieve desired pollination
D Prevent contamination from foreign pollen

Answer: Prevent contamination from foreign pollen
5 A technique of micropropagation is
A Multiple root production
B Somatic embryogenesis
C Growth of micro organisms on culture medium
D Multiple shoot production and embryo rescue

Answer: Somatic embryogenesis
6 A mating is expected to produce 50% heterozygotes and homozygotes is
A BB X Bb
B BB x Bb
C both a and b
D bb xbb

Answer: both a and b
7 The codons which collectively code for the same amino acid
A Synonymous codons or Degenerate codons
B Initiation codons
C Termination codons
D None Of The Above

Answer: Synonymous codons or Degenerate codons
8 How many triplet codons can be made from the four nucleotides A, U, G na d C containing one or more uracils?
A 27/64
B 17/64
C 37/64
D 47/64

Answer: 37/64
9 Given the antisense DNA codon 3'TAC5', the anticodon that pairs with corresponding mRNA codon could be
A 3'CAT5'
B 5'AUG3'
C 3'UAC5'
D None of the Above

Answer: 3'UAC5'
10 The highest number in Ophioglossum reticulatum
A 2n=1260
B 2n=1206
C 2n=1026
D 2n=1620

Answer: 2n=1260
11 What is LD 50?
A Mutagen kills 50% treated materials
B Mutagen kills 50% un-treated materials
C Lose of 50% chemicals
D Low dose of semi mutagen

Answer: Mutagen kills 50% treated materials
12 The method of section of plants from population by their Phenotype
A Mass Selection
B Pureline Section
C Clonal section
D Both a and b

Answer: Mass Selection
13 The process of transfer of hereditary character from one generation to another is known as...........?
A Genes
B Mutation
C Variation
D Genetics

Answer: Genetics
14 Which term of genetics represents the potential ability of a plant cell to grow into a complete plant?
A Pluripotency
B Totipotency
C Cloning
D Variation

Answer: Pluripotency
15 What do you mean by law of dominance?
A When offspring shows the characters of generation
B When Offspring of cross breed parent only show dominant characters in F1 generation
C When offspring of cross breed parent only show dominant characters in F2 generation
D In F2 generation both the character which is governed by gene are separated

Answer: When Offspring of cross breed parent only show dominant characters in F1 generation
16 Which of the following process is an exception of Mendel Law?
A Mutation
B Variation
C Linkage
D None of the above

Answer: Linkage
17 Which plant Gregor Mendel had cross breed for his experiment?
A Onion plant
B Carrot plant
C Pea plant
D Lily plant

Answer: Pea plant
18 A sudden change in the gene which is heritable from one generation to other is known as?
A Variation
B Cloning
C Totipotency
D Mutation

Answer: Mutation
19 Name the chromosome found in the cells which are responsible for characters other than sex chromosomes?
A Autosomes
B Genome
C Mitochondrial chromosome
D Y chromosome

Answer: Autosomes
20 Who is known as father of genetics?
A Gregor Mendel
B Augustinian friar
C Norman Borlaug
D M.S Swaminathan

Answer: Gregor Mendel

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