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Class 8 Science MCQs (Grade 8) From Textbook

Class 8 Science MCQs – Certification Test 436

Micro-organisms and Viruses Quiz (Question 436) – App & e-Book Download

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MCQ 436: Systems which open to external environment are protected from bacteria by presence of:

  1. mucus membranes
  2. HCl
  3. hairs
  4. plug
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Class 8 Science Quiz App & e-Book – Micro-organisms and Viruses Exam Prep

Free Micro-organisms And Viruses Textbook App – Download from Play & App Store

The App: Micro-organisms and Viruses Quiz App to learn Micro-organisms and Viruses Notes, 8th Grade Science Quiz App, and Earth Science Quiz App. The "Micro-organisms and Viruses Quiz" App Download – Free 8th Grade Science App (iOS & Android) to learn online certification courses. Download App Store & Play Store Learning Apps with all functionalities for school certificate.

Micro-organisms and Viruses Quiz App (iOS & Android)

Micro-organisms and Viruses Quiz App

8th Grade Science Quiz App (Android & iOS)

8th Grade Science Quiz App

Earth Science Quiz App (Android & iOS)

Earth Science Quiz App

7th Grade Science Quiz App (Android & iOS)

7th Grade Science Quiz App

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