CET-BIOLOGY-JNK-2008 Questions and Answers

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Q61
The theory of use and disuse of organ was proposed by :
  • A Darwin
  • B Lamarck
  • C De Vries
  • D Hooker
Answer: Option B
Q62
One of the following theories were proposed by Weissman :
  • A Law of inheritance
  • B Theory of inheritance of acquired characters
  • C Theory of natural selection
  • D Theory of germplasm
Answer: Option D
Q63
Ontogeny recapitulates phylogeny— this theory is called :
  • A Biogenetic law
  • B Law of embryology
  • C Law of acquired characters
  • D Law of Bridges
Answer: Option A
Q64
The brain capacity of Homoerectus is :
  • A 800 cc
  • B 900 cc
  • C 1200 cc
  • D 1400 cc
Answer: Option B
Q65
An example of Innate immunity is :
  • A PMNL-neutrophils
  • B T-lymphocytes
  • C B-lymphocytes
  • D TH cells
Answer: Option A
Q66
Cocaine is extracted from :
  • A Erythroxylum coca
  • B Cannabis sativa
  • C Papaver somniferum
  • D Atropa belladonna
Answer: Option A
Q67
The enzyme that cuts DNA is :
  • A DNA-polymerase
  • B DNA-ligase
  • C DNA-lyase
  • D Restriction endonuclease
Answer: Option D
Q68
In the association between two organisms, if one organism is benefited and the other is not benefited, this relationship is known as :
  • A Symbiotism
  • B Mutualism
  • C Commensalism
  • D Parasitism
Answer: Option C
Q69
Opiate narcotics drugs are :
  • A Antianxiety
  • B Analgesic
  • C Hypnotic
  • D Antihistamine
Answer: Option B
Q70
The drug useful to increase cardiovascular effects in human beings is :
  • A Cocaine
  • B Barbiturate
  • C Benzodiazetine
  • D Insulin
Answer: Option A

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