Biology Practice Paper
Time: 1 hour 30 minutes Maximum Marks: 70
Section A: Multiple Choice Questions (1 mark each)
1. Which organelle is known as the powerhouse of the cell?
a) Nucleus b) Mitochondria c) Ribosome d) Endoplasmic Reticulum
2. The genetic material in most organisms is:
a) RNA b) Protein c) DNA d) Lipids
3. Which of the following is a reflex action?
a) Writing b) Sleeping c) Blinking of eyes d) Talking
4. Photosynthesis occurs in:
a) Mitochondria b) Ribosomes c) Chloroplasts d) Nucleus
5. Which blood group is called the universal donor?
a) A b) B c) AB d) O
Section B: Short Answer Questions (3 marks each)
6. Explain the structure and function of the cell membrane.
7. Describe the differences between aerobic and anaerobic respiration.
8. What is osmosis? Explain its importance in plants.
9. Define homeostasis and give two examples.
10. Draw a labeled diagram of the human heart.
Section C: Long Answer Questions (5 marks each)
11. Describe the process of digestion in humans with a neat labeled diagram of the digestive system.
12. Explain Mendel's laws of inheritance with the help of a Punnett square.
13. What are the different types of reproduction? Explain with examples.
14. Discuss the effects of deforestation on biodiversity and the environment.
15. Explain the nitrogen cycle with the help of a diagram.
Time: 1 hour 30 minutes Maximum Marks: 70
Section A: Multiple Choice Questions (1 mark each)
1. Which organelle is known as the powerhouse of the cell?
a) Nucleus b) Mitochondria c) Ribosome d) Endoplasmic Reticulum
2. The genetic material in most organisms is:
a) RNA b) Protein c) DNA d) Lipids
3. Which of the following is a reflex action?
a) Writing b) Sleeping c) Blinking of eyes d) Talking
4. Photosynthesis occurs in:
a) Mitochondria b) Ribosomes c) Chloroplasts d) Nucleus
5. Which blood group is called the universal donor?
a) A b) B c) AB d) O
Section B: Short Answer Questions (3 marks each)
6. Explain the structure and function of the cell membrane.
7. Describe the differences between aerobic and anaerobic respiration.
8. What is osmosis? Explain its importance in plants.
9. Define homeostasis and give two examples.
10. Draw a labeled diagram of the human heart.
Section C: Long Answer Questions (5 marks each)
11. Describe the process of digestion in humans with a neat labeled diagram of the digestive system.
12. Explain Mendel's laws of inheritance with the help of a Punnett square.
13. What are the different types of reproduction? Explain with examples.
14. Discuss the effects of deforestation on biodiversity and the environment.
15. Explain the nitrogen cycle with the help of a diagram.
