Botany-CPMT MCQ Questions and Answers

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Q51
In the nucleoplasm there occurs a conspicuous body of spherical shape attached to a particular chromosome on a definite position. This is called-
  • A Plasmid
  • B Nucleolus
  • C Centromere
  • D Karyolymph
Answer: Option B
Q52
Restorer gene for fertility is present in-
  • A Ribosome
  • B Nucleus
  • C Endoplasmic reticulum
  • D Polyribosome
Answer: Option B
Q53
The points at which crossing over occurs between homologous chromosomes are called-
  • A Chromonemata
  • B Chromomere
  • C Chiasmata
  • D All of the above
Answer: Option C
Q54
The process in which the amount of DNA, RNA and protein can be known at a time is called-
  • A Autoradiography
  • B Cellular fractioning
  • C Phase-contrast microscopy
  • D All of the above
Answer: Option B
Q55
The diploid number of chromosomes in rice is-
  • A 12
  • B 24
  • C 36
  • D 48
Answer: Option B
Q56
Inflorescence in coconut is-
  • A Compound spadix
  • B Hypanthodium
  • C Cyathium
  • D Strobile
Answer: Option A
Q57
Which of the following antibiotics blocks the synthesis of bacterial cell wall ?
  • A Streptomycin
  • B Tetracycline
  • C Penicillin
  • D Erythromycin
Answer: Option C
Q58
A technique used for studying the effect of deficiency or toxicity of mineral nutrients on plant growth and metabolism is called-
  • A Hydroculture
  • B Hydroponics
  • C Solution culture
  • D All of the above
Answer: Option C
Q59
Which of the following enzymes recognizes particularly common DNA lesions ?
  • A RNA polymerase
  • B DNA polymerase
  • C DNA glycolysase
  • D All of the above
Answer: Option C
Q60
The efficient oil eating ‘super bug’ developed through genetic engineering used in cleaning of oil spills polluted sites is a species of-
  • A Citrobacter
  • B Pseudomonas
  • C Arthrobacter
  • D Thiobacillus
Answer: Option B

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