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Uttarakhand Board Class 10 Class10 Life Nutrition Respiration — practice questions

Explore 2 free Class10 Life Nutrition Respiration questions in Uttarakhand Board Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.

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Class10 Life Nutrition Respiration questions and exercises with answers

Showing questions 1–2 of 2.

Photosynthesis overall reaction is:Read the answer and worked solution →Anaerobic respiration in muscle produces:Read the answer and worked solution →

Worked practice questions

Photosynthesis overall reaction is:

  1. Light + CO₂ + H₂O → glucose + O₂
  2. Glucose + O₂ → CO₂ + H₂O
  3. Water + salt → glucose
  4. Glucose → CO₂ + O₂
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Correct answer: A. Light + CO₂ + H₂O → glucose + O₂

Photosynthesis: light energy converts CO₂ and water into glucose and O₂ inside chloroplasts.

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Anaerobic respiration in muscle produces:

  1. 38 ATP and CO₂
  2. 2 ATP and lactic acid
  3. 12 ATP and ethanol
  4. No ATP at all
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Correct answer: B. 2 ATP and lactic acid

Without oxygen, glucose breaks down into lactic acid releasing only ~2 ATP, far less than aerobic respiration's ~38 ATP.

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More Science topics

Light - Reflection and RefractionLife ProcessesScienceOur EnvironmentChemical Reactions and EquationsThe Human Eye and the Colourful WorldElectricityCarbon and its Compounds