Class 10 Biology MCQs (Grade 10) From Textbook

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Class 10 Biology Competitive Exam MCQs – Practice Test 5 (Chapter 3)

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The Gaseous exchange Multiple Choice Questions (MCQs) with Answers PDF (Gaseous Exchange MCQs PDF e-Book) download Ch. 3-5 to study Class 10 Biology Course. Learn Gaseous Exchange Quiz Questions and Answers to study high school online courses. Download the Class 10 Biology MCQs App – Free Gaseous Exchange App for gaseous exchange in humans, thoracic diseases test prep for taking online classes.

The MCQ: In nostrils, the substance which moistens and keep the incoming air warm is classified as; "Class 10 Biology MCQs" App Download [Free] with answers: larynx, bronchi, mucous, and glottis to study high school online courses. Solve Gaseous Exchange in Humans MCQ Questions, download Google e-Book (Free Chapter) for free online courses.

Gaseous Exchange MCQs – Practice Test 5 PDF Download

MCQ: 21

In nostrils, the substance which moistens and keep the incoming air warm is classified as

  1. bronchi
  2. larynx
  3. mucous
  4. glottis
MCQ: 22

During inspiration the diaphragm is

  1. contracted
  2. dome shaped
  3. relaxed
  4. raised
MCQ: 23

The main cause of lung cancer is

  1. pollutants
  2. smoking
  3. cough
  4. fever
MCQ: 24

The most common cause of cancer-related deaths is

  1. kidney cancer
  2. liver cancer
  3. lung cancer
  4. stomach cancer
MCQ: 25

The cluster of pouches opened from alveolar ducts is called

  1. pulmonary cells
  2. alveoli
  3. bronchus
  4. epithelial cells

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