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MCQs

Total Questions : 275 | Page 8 of 28 pages
Question 71. Pancreatic juice helps in the conversion of proteins to polypeptides, through enzyme known as
  1.    pepsin
  2.    erepsin
  3.    trypsin
  4.    enterokinase
 Discuss Question
Answer: Option C. -> trypsin
Answer: (c).trypsin
Question 72. Energy pyramid is broader at base and narrower at apex, as the energy
  1.    increases along the food chain
  2.    decreases along the food chain
  3.    remains same along the food chain
  4.    may increase or decrease along the food chain
 Discuss Question
Answer: Option B. -> decreases along the food chain
Answer: (b).decreases along the food chain
Question 73. To grow, repair and reproduce, which is needed more?
  1.    cytoplasm
  2.    protoplasm
  3.    centrioles
  4.    chromatins
 Discuss Question
Answer: Option B. -> protoplasm
Answer: (b).protoplasm
Question 74. Transference of food from one trophic level to the next is accompanied with
  1.    an energy gain
  2.    energy loss
  3.    macronutrients only
  4.    micronutrients only
 Discuss Question
Answer: Option B. -> energy loss
Answer: (b).energy loss
Question 75. More energy is available if the man feeds
  1.    directly on plants
  2.    on cattle
  3.    on meat
  4.    on quaternary consumers
 Discuss Question
Answer: Option A. -> directly on plants
Answer: (a).directly on plants
Question 76. Population growth is checked by
  1.    competition
  2.    no competition
  3.    no polymorphism
  4.    polymorphism
 Discuss Question
Answer: Option A. -> competition
Answer: (a).competition
Question 77. Adaptation is caused by
  1.    Darwin's natural selection
  2.    Lamarck's ideas
  3.    Hardy
  4.    Weinberg
 Discuss Question
Answer: Option A. -> Darwin's natural selection
Answer: (a).Darwin's natural selection
Question 78. The genetic change in a population caused by natural selection is called
  1.    polymorphism
  2.    adaptation
  3.    specialization
  4.    gene linkage
 Discuss Question
Answer: Option B. -> adaptation
Answer: (b).adaptation
Question 79. Adaptation of traits to better fill a niche is called
  1.    polymorphism
  2.    gene linkage
  3.    specialization
  4.    replication
 Discuss Question
Answer: Option C. -> specialization
Answer: (c).specialization
Question 80. Two species can avoid competition, and better use the environment's resources by occupying different
  1.    adaptations
  2.    polymorphism
  3.    nitches
  4.    specialization
 Discuss Question
Answer: Option C. -> nitches
Answer: (c).nitches

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