GK Biology Questions and Answers

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Q21
Other than spreading malaria, anopheles mosquitoes are also vectors of
  • A dengue fever
  • B filariasis
  • C encephalitis
  • D yellow fever
Answer: Option B
Q22
Plants that grow in saline water are called
  • A halophytes
  • B hydrophytes
  • C mesophytes
  • D thallophytes
Answer: Option A
Q23
Pyorrhoea is a disease of the
  • A nose
  • B gums
  • C heart
  • D lungs
Answer: Option B
Q24
Placenta is the structure formed
  • A by the union of foetal and uterine tissue
  • B by foetus only
  • C by fusion of germ layers
  • D None of these
Answer: Option A
Q25
Plants hormone that induces cell division is
  • A auxins
  • B gibberellins
  • C kinins
  • D domins
Answer: Option C
Q26
Neurospora is used as genetic material because
  • A it has short life cycle of 10 days
  • B the product of single meiosis can be easily analysed
  • C meiotic products are linearly arranged in the form of ordered tetrads
  • D is a diploid fungus
Answer: Option A
Q27
Neurospora is used as genetic material because
  • A it has short life cycle of 10 days
  • B the product of single meiosis can be easily analysed
  • C meiotic products are linearly arranged in the form of ordered tetrads
  • D is a diploid fungus
Answer: Option A
Q28
out of proteins, lipids and carbohydrates present in a cell membrane, what is true?
  • A Lipids are maximum
  • B Carbohydrates are minimum
  • C Carbohydrates are maximum
  • D All three are in equal proportion
Answer: Option B
Q29
Potato is a modified form (outgrowth) of
  • A root
  • B stem
  • C fruit
  • D leaf
Answer: Option B
Q30
Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
  • A Order
  • B Subspecies
  • C Class
  • D Genus
Answer: Option C

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