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MCQs

General Biology

Total Questions : 1232 | Page 5 of 124 pages
Question 41. Xylem tissues are also called as
  1.    wood
  2.    supportive
  3.    lignin
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 42. Absence of cross-walls and protoplasm enable the water to move through
  1.    xylem
  2.    phloem
  3.    epithelial tissues
  4.    mesophyll layer
 Discuss Question
Answer: Option A. -> xylem
Answer: (a).xylem
Question 43. To make their own food, green plants take in
  1.    organic food substances
  2.    raw materials
  3.    water
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 44. Movements from one place to another is called as
  1.    sensitivity
  2.    irritability
  3.    adaptability
  4.    locomotion
 Discuss Question
Answer: Option D. -> locomotion
Answer: (d).locomotion
Question 45. Continuous exchange of energy and materials are characteristic of
  1.    transparent systems
  2.    open systems
  3.    hybrid systems
  4.    closed systems
 Discuss Question
Answer: Option B. -> open systems
Answer: (b).open systems
Question 46. Amount of water (H₂O) in blood is increased due to
  1.    lesser tissue respiration
  2.    more protein-rich diet
  3.    more glucose in blood
  4.    more water intake
 Discuss Question
Answer: Option D. -> more water intake
Answer: (d).more water intake
Question 47. Blood pressure rises due to
  1.    decrease in blood volume
  2.    increase in diameter of blood vessels
  3.    decrease in diameter of blood vessels
  4.    inability of pituitary gland to produce hormones
 Discuss Question
Answer: Option C. -> decrease in diameter of blood vessels
Answer: (c).decrease in diameter of blood vessels
Question 48. More water is reabsorbed in the blood due to
  1.    more anti-diuretic hormone
  2.    lesser anti-diuretic hormone
  3.    active functioning of pancreas
  4.    inactivity of pituitary gland
 Discuss Question
Answer: Option A. -> more anti-diuretic hormone
Answer: (a).more anti-diuretic hormone
Question 49. Kidneys do not help in
  1.    osmoregulation
  2.    maintaining body temperature
  3.    maintaining composition of blood plasma
  4.    regulation of blood pH
 Discuss Question
Answer: Option B. -> maintaining body temperature
Answer: (b).maintaining body temperature
Question 50. Osmoregulators refers to regulating
  1.    salt concentration in blood only
  2.    water concentration in blood only
  3.    mineral concentration in blood
  4.    salt and water concentration in blood
 Discuss Question
Answer: Option D. -> salt and water concentration in blood
Answer: (d).salt and water concentration in blood

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