Class 10 Science Chapter 5: Life Processes — practice questions with answers
Free practice for Class 10 Science, Chapter 5: Life Processes. Try the solved questions below, then take a free test with instant marking and explanations.
49 questions22 easy, 21 medium, 6 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Which process makes food in green plants using sunlight?
- Photosynthesis
- Respiration
- Transpiration
- Translocation
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Answer: A. Photosynthesis
Why: CO₂ + H₂O → carbohydrates in the presence of chlorophyll and sunlight. [p.81]
Why: CO₂ + H₂O → carbohydrates in the presence of chlorophyll and sunlight. [p.81]
Q2. Tiny pores on the surface of leaves through which gases are exchanged are called ______.
- stomata
- lenticels
- alveoli
- villi
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Answer: A. stomata
Why: Guard cells control their opening. [p.83]
Why: Guard cells control their opening. [p.83]
Q3. The enzyme in saliva that breaks down starch into sugar is salivary ______.
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Answer: amylase
Why: It acts on starch in the mouth. [p.85]
Why: It acts on starch in the mouth. [p.85]
Q4. Which enzyme in gastric juice digests proteins?
- Pepsin
- Lipase
- Amylase
- Trypsin
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Answer: A. Pepsin
Why: Gastric glands secrete HCl, pepsin and mucus. [p.85]
Why: Gastric glands secrete HCl, pepsin and mucus. [p.85]
Q5. The finger-like projections of the small intestine that increase surface area for absorption are called ______.
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Answer: villi
Why: They are richly supplied with blood vessels. [p.86]
Why: They are richly supplied with blood vessels. [p.86]
Q6. In which part of the cell is pyruvate broken down using oxygen?
- Mitochondria
- Cytoplasm
- Nucleus
- Chloroplast
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Answer: A. Mitochondria
Why: Aerobic respiration releases much more energy. [p.87]
Why: Aerobic respiration releases much more energy. [p.87]
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Frequently asked questions
How many practice questions are there for Class 10 Science Chapter 5: Life Processes?
49 questions (22 easy, 21 medium, 6 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 10 Science syllabus, used by CBSE and many state boards.