Botany MCQ Exam Question Paper Answer collection – 4

Updated on Mon, 22 September 2014 at 18:53 IST
 

Botany MCQ Exam Question Paper Answer collection – 4

1 Which of the following is not a property of the genetic code?
(1) Universal
(2) Non-overlapping
(3) Ambiguous
(4) Degeneracy

2 Genetic variation in a population arises due to
(1) Mutations only
2) Recombination only
(3) Mutations as well as recombination
(4) Reproductive isolation and selection

3 Satellite RNAs are present in some
(1) Plant viruses
(2) Viroids
(3) Prions
(4) Bacteriophages

4 One of the most frequently used techniques in DNA fingerprinting is
(1) AFLP
(2) VNTR
(3) SSCP
(4) SCAR

5 Which one of the following vectors is used to replace the defective gene in gene therapy?
(1) Ti plasmid
(2) Adenovirus
(3) Cosmid
(4) Ri plasmid

6 Which of the following statements is not true about somatic embryogenesis?
(1) A somatic embryo develops from a somatic cell
(2) The pattern of development of a somatic embryo is comparable to that of a zygotic embryo
(3) Somatic embryos can develop from microspores
(4) Somatic embryo is induced usually by an auxin such as 2, 4-D

7 Genes of interest can be selected from a genomic library by using
(1) Restriction enzymes
(2) Cloning vectors
(3) DNA probes
(4) Gene targets

8 During the process of isolation of DNA, chilled ethanol is added to
(1) Remove proteins such as histones
(2) Precipitate DNA
(3) Break open the cell to release DNA
(4) Facilitate action of restriction enzymes

9 RNA interference involves
(1) Synthesis of mRNA from DNA
(2) Synthesis of cDNA from RNA using reverse transcriptase
(3) Silencing of specific mRNA due to complementary RNA
(4) Interference of RNA in synthesis of DNA

10 Benthic organisms are affected most by
(1) Water-holding capacity of soil
(2) Light reaching the forest floor
(3) Surface turbulence of water
(4) Sediment characteristics of aquatic ecosystems

Answer

1-3 , 2-3 , 3-1 , 4-2 , 5-2 , 6-3 , 7-3 , 8-2 , 9-3 , 10-4

 
 
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