Plant Photosynthesis and Respiration Multiple Choice Questions 5 PDF Download

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Science multiple choice questions (MCQ) on largest percentage composition in air is of with options oxygen, argon, nitrogen and carbon dioxide, what is respiration quiz for competitive exam prep, viva interview questions with answers key. Free science study guide to learn what is respiration quiz to attempt multiple choice questions based test.

MCQs on Plant Photosynthesis and Respiration Quiz PDF Download Worksheets 5

MCQ. Largest percentage composition in air is of

  1. argon
  2. oxygen
  3. nitrogen
  4. carbon dioxide

C

MCQ. At midday, leaves

  1. respiration
  2. photosynthesis
  3. mainly photosynthesis and some respiration
  4. none of them

C

MCQ. Number of factors that affect rate of photosynthesis are

  1. four
  2. three
  3. two
  4. five

A

MCQ. Products of photosynthesis are oxygen and

  1. Starch and Sucrose
  2. Glucose
  3. Starch
  4. water

B

MCQ. Balance of two gases is very important for all communities, these two gases are

  1. nitrogen & oxygen
  2. carbon dioxide and oxygen
  3. argon & nitrogen
  4. none of them

B