These are real past-paper questions. Think of your answer first, then open the explanation.
2023 Annual · 9th · Introduction to Biology
The career most associated with the study of plants grown for beautification is:
- Agriculture
- Botany
- Forestry
- Horticulture
Show answer and explanation
Answer: D. Horticulture
Horticulture is the branch concerned with growing ornamental and beautification plants.
2023 Annual · 9th · Cells and Tissues
Maheen has learned that the brain, spinal cord and peripheral nerves work together. She combined all parts to form:
- A cell
- A tissue
- An organ
- An organ system
Show answer and explanation
Answer: D. An organ system
Different organs (brain, spinal cord, nerves) working together form an organ system — the nervous system.
2023 Annual · 9th · Biodiversity
A good classification system does all of the following EXCEPT:
- Showing relationships
- Showing evolutionary trends
- Creating confusion
- Use one name for an organism
Show answer and explanation
Answer: C. Creating confusion
Classification aims to remove confusion, not create it — it standardises naming and shows relationships.
2023 Annual · 9th · Solving a Biological Problem
What is a hypothesis? State the characteristics of a good hypothesis.
Show model answer
A hypothesis is a tentative, testable explanation for an observation, proposed before experimentation.
Characteristics: (1) it must be testable by experiment, (2) it should be based on prior observations/knowledge, (3) it should be simple and specific, and (4) it must be falsifiable (capable of being proved wrong).