Photosynthesis and Respiration is one of 9 topics in the Grade 8 Natural Sciences CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What is photosynthesis?
The process plants use to make their own food using sunlight
The process of a plant losing water through its leaves
The process of a plant absorbing minerals from soil
The process of a seed growing into a plant
Answer: The process plants use to make their own food using sunlight — Photosynthesis is the process plants use to capture light energy from the Sun and use it to make their own food (glucose).
Easy
2. Which green substance in a leaf absorbs sunlight for photosynthesis?
Chlorophyll
Glucose
Cellulose
Oxygen
Answer: Chlorophyll — Chlorophyll is the green substance in leaves that absorbs sunlight, making photosynthesis possible.
Medium
3. Name the TWO substances a plant takes in from its environment to carry out photosynthesis.
Answer: carbon dioxide and water — A plant takes in carbon dioxide from the air and water from the soil to carry out photosynthesis.
