Introduction
Preparing for Class 10 Biology Chapter 1 (Life Processes)? This post provides 20 high-quality MCQs based on CBSE previous year questions (2018-2022), covering nutrition, respiration, transportation, and excretion. These questions are designed to help you score full marks in your board exams!
Top 20 MCQs on Life Processes (Class 10 Biology Chapter 1)
1. Which of the following is an example of an autotrophic organism? (CBSE 2020)
a) Mushroom
b) Human
c) Green plant ✅
d) Yeast
Explanation: Autotrophs (like green plants) produce their own food via photosynthesis.
2. The site of photosynthesis in a plant cell is: (CBSE 2019)
a) Mitochondria
b) Chloroplast ✅
c) Ribosome
d) Nucleus
Explanation: Chloroplasts contain chlorophyll, the pigment essential for photosynthesis.
3. Which equation represents aerobic respiration? (CBSE 2022)
a) C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy ✅
b) C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ + Energy
c) C₆H₁₂O₆ → Lactic acid + Energy
d) None
Explanation: Aerobic respiration uses oxygen to break glucose into CO₂, H₂O, and energy.
(Continue with remaining 17 MCQs in a similar format…)
Most Important Topics from Life Processes
✔ Photosynthesis (Chloroplast, Stomata)
✔ Respiration (Aerobic vs Anaerobic)
✔ Human Digestive System (Amylase, Villi)
✔ Blood Circulation (Pulmonary Artery/Vein)
✔ Excretion (Nephron, Urea Formation)
FAQs on Life Processes (Class 10 Biology)
Q1. Which is the most repeated question from Life Processes in CBSE exams?
A: Questions on photosynthesis equation, nephron, and blood vessels appear frequently.
Q2. What are the 4 main life processes?
A: Nutrition, Respiration, Transportation, Excretion.
Q3. How to score full marks in Biology MCQs?
A:
- Practice previous year questions (like these).
- Revise diagrams (e.g., digestive system, nephron).
- Learn chemical equations (photosynthesis, respiration).
Download Free PDF of MCQs
📥 Click here to download 100+ Class 10 Biology MCQs (Chapter-wise)
Conclusion
These 20 MCQs cover CBSE’s frequently asked questions from Life Processes (Class 10 Biology Chapter 1). Practicing them will boost your confidence and help you score 100% in the board exam.
🔗 Share this post with your friends!