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BIOLOGY MCQs

Total Questions : 1207 | Page 118 of 121 pages
Question 1171. . Poison glands of snakes are homologous to
  1.    electric organs of fishes
  2.    stings of rays
  3.    sebaceous glands of mammals
  4.    salivary glands of vertebrates
 Discuss Question
Answer: Option D. -> salivary glands of vertebrates
Question 1172. . Plant bends towards the source of light on account of the movement of curvature known as
  1.    geotropism
  2.    thigmotropism
  3.    chemotropism
  4.    phototropism
 Discuss Question
Answer: Option D. -> phototropism
Question 1173. . Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
  1.    Exact concentration of solution is not given
  2.    Character of semi permeable membrane is not given
  3.    The flow of solution is not possible through semi permeable membrane
  4.    All are incorrect
 Discuss Question
Answer: Option C. -> The flow of solution is not possible through semi permeable membrane
Question 1174. . Photosynthesis is a process
  1.    reductive and exergonic
  2.    reductive and catabolic
  3.    reductive, endergonic and catabolic
  4.    reductive, endergonic and anabolic
 Discuss Question
Answer: Option D. -> reductive, endergonic and anabolic
Question 1175. . Plant have ____ while animals lack it.
  1.    starch
  2.    cellulose
  3.    protein
  4.    fat
 Discuss Question
Answer: Option B. -> cellulose
Question 1176. . On which of the following plants did Gregor Mendal perform his classical experiment?
  1.    Gram
  2.    Maize
  3.    Pea
  4.    Wheat
 Discuss Question
Answer: Option C. -> Pea
Question 1177. . Monocot root differs from dicot root in having
  1.    open vascular bundles
  2.    scattered vascular bundles
  3.    well developed pith
  4.    radially arranged vascular bundles
 Discuss Question
Answer: Option C. -> well developed pith
Question 1178. .  Pigmentation of skin is due to
  1.    lymphocytes
  2.    monocytes
  3.    leucocytes
  4.    melanocytes
 Discuss Question
Answer: Option D. -> melanocytes
Question 1179. . Night blindness is cause by lack of which vitamin?
  1.    Vitamin A
  2.    Vitamin B
  3.    Vitamin C
  4.    Vitamin D
 Discuss Question
Answer: Option A. -> Vitamin A
Question 1180. . Norepinephrine increases
  1.    respiration
  2.    urine production
  3.    saliva production
  4.    blood pressure
 Discuss Question
Answer: Option D. -> blood pressure

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