Class 9 Biology MCQs (Grade 9) From Textbook

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Class 9 Biology MCQs – Certification Test 469

Cell Organelles Trivia (Question 469) – App & e-Book Download

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MCQ: 469

The lysosomes were discovered by

  1. Ernst James
  2. Rachel Hackel
  3. John Watson
  4. Christian Rene De Duve
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