GS Biology Questions and Answers

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Q161
Outer covering of virus made up of protein is
  • A capsid
  • B coat
  • C virion
  • D viriod
Answer: Option A
Q162
Number of chromosomes in Down's syndrome is
  • A 46
  • B 47
  • C 48
  • D 49
Answer: Option B
Q163
 Mutation is
  • A a factor responsible for plant growth
  • B a change which affects the offspring of F2 generation only
  • C a change that is inherited
  • D a change which affects the parents
Answer: Option C
Q164
Ptyalin is an enzyme produced in the
  • A salivary glands
  • B pituitary glands
  • C thyroid glands
  • D pancreas
Answer: Option A
Q165
Norepinephrine increases
  • A respiration
  • B urine production
  • C saliva production
  • D blood pressure
Answer: Option D
Q166
 Our major foods, fibres, spices, fruits and beverage crops are
  • A flowering plants
  • B gymnosperms plants
  • C pteridophytes
  • D bryophytes
Answer: Option A
Q167
Most of the red, blue and purple colours of plants are due to a pigment called
  • A anthocyanin
  • B carotene
  • C chlorophyll
  • D xanthophylls
Answer: Option A
Q168
Most abundant tissues of our body are
  • A muscular
  • B connective
  • C epithelial
  • D nervous
Answer: Option A
Q169
One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?
  • A Having waited a day, it is too late to take an antibiotic
  • B You need an antiseptic, not an antibiotic
  • C You need to be vaccinated instead of taking an antibiotic
  • D You are infected by a virus
Answer: Option D
Q170
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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