Heart: O Level Biology MCQ App | IGCSE O Level Biology MCQ e-Book PDF
IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 58

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Free "Heart: O Level Biology MCQ" App Download (iOS & Android): Semilunar valves are present at the bases of; MCQ with answers: aorta only, pulmonary artery only, pulmonary artery and aorta, and pulmonary veins. Practice Transport in Mammals Questions and Answers, Google Book to download free chapter to explore scientific topics.

Heart: O Level Biology MCQ – Mock Test 58 PDF Download

MCQ 286: Semilunar valves are present at the bases of:

  1. pulmonary artery only
  2. aorta only
  3. pulmonary veins
  4. pulmonary artery and aorta

MCQ 287: If the trees are cleared, annual rain fall:

  1. increases causing flood
  2. decreases and the area becomes dry
  3. decreases but increases moisture
  4. increases but decreases moisture

MCQ 288: First use of pure microbiological process in an industrial procedure was made by Chaim Weizmann in:

  1. 1921
  2. 1925
  3. 1917
  4. 1907

MCQ 289: In brain hypothalamus forms the:

  1. walls of medulla oblongata
  2. floor of the cerebral hemispheres
  3. base of the cerebellum
  4. top of the medulla

MCQ 290: To hydrolyze Tristearin, the enzyme used is:

  1. sucrose
  2. lipase
  3. maltase
  4. amylase

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