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BIOLOGY MCQs

Total Questions : 2561 | Page 5 of 257 pages
Question 41. Normal adult human male has
  1.    10 gram of haemoglobin/100 gram of blood
  2.    14 gram of haemoglobin/100 gram of blood
  3.    18 gram of haemoglobin/100 gram of blood
  4.    24 gram of haemoglobin/100 gram of blood
 Discuss Question
Answer: Option B. -> 14 gram of haemoglobin/100 gram of blood
Question 42. Plants wilt due to excess of
  1.    transpiration
  2.    photosynthesis
  3.    absorption
  4.    None of these
 Discuss Question
Answer: Option A. -> transpiration
Question 43. Monotremes are unique mammals because they
  1.    posses hair
  2.    give birth to live young
  3.    secret milk in a pouch
  4.    lay eggs
 Discuss Question
Answer: Option D. -> lay eggs
Question 44. 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 45. Radical vascular bundles are those in which
  1.    xylem is surrounded by phloem
  2.    phloem is surrounded by xylem
  3.    xylem and phloem occur on the same radius
  4.    xylem and phloem occur on the different radii
 Discuss Question
Answer: Option D. -> xylem and phloem occur on the different radii
Question 46. 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 47. Plant have ____ while animals lack it.
  1.    starch
  2.    cellulose
  3.    protein
  4.    fat
 Discuss Question
Answer: Option B. -> cellulose
Question 48. 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 49. 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 50. 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

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