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BIOLOGY MCQs

Total Questions : 2561 | Page 4 of 257 pages
Question 31. Out of proteins, lipids and carbohydrates present in a cell membrane, what is true?
  1.    Lipids are maximum
  2.    Carbohydrates are minimum
  3.    Carbohydrates are maximum
  4.    All three are in equal proportion
 Discuss Question
Answer: Option B. -> Carbohydrates are minimum
Question 32. Potato is a modified form (outgrowth) of:
  1.    root
  2.    stem
  3.    fruit
  4.    leaf
 Discuss Question
Answer: Option B. -> stem
Question 33. Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?
  1.    Order
  2.    Subspecies
  3.    Class
  4.    Genus
 Discuss Question
Answer: Option C. -> Class
Question 34. Prothrombin which helps in clotting of blood is released by
  1.    lymphocytes
  2.    erythrocytes
  3.    monocytes
  4.    blood platelets
 Discuss Question
Answer: Option D. -> blood platelets
Question 35. Myopia is connected with
  1.    ears
  2.    eyes
  3.    lungs
  4.    None of these
 Discuss Question
Answer: Option B. -> eyes
Question 36. Most of the red, blue and purple colours of plants are due to a pigment called
  1.    anthocyanin
  2.    carotene
  3.    chlorophyll
  4.    xanthophylls
 Discuss Question
Answer: Option A. -> anthocyanin
Question 37. Plants developing in dry conditions are
  1.    xerophytes
  2.    mesophytes
  3.    lithophytes
  4.    hydrophytes
 Discuss Question
Answer: Option A. -> xerophytes
Question 38. Plants growing on sand are called as
  1.    chasmophytes
  2.    oxylophytes
  3.    lithophytes
  4.    psammophytes
 Discuss Question
Answer: Option D. -> psammophytes
Question 39. Our skin, when exposed to excess sunlight, becomes dark. This is because of our skin pigments called
  1.    flavoxanthin
  2.    melanin
  3.    carotene
  4.    Xanthophyll
 Discuss Question
Answer: Option B. -> melanin
Question 40. Ramapithecus and Cro-Magnon man are considered
  1.    ancestors of modern man
  2.    ancestors of monkey
  3.    ancestors of lion
  4.    None of the above
 Discuss Question
Answer: Option A. -> ancestors of modern man

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