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Plant and Tree Trivia Quiz
Why are leaves green, and what were cactus spines once? From the largest flower and the oldest tree to the fungal network beneath forest roots — this quiz has 25 questions about plants and trees.
PlantsTreesNatureScience
Sample questions
22 more questions in this quiz.1. What do we call the process by which plants use the energy of sunlight to make nutrients from water and carbon dioxide?
- A. Photosynthesis
- B. Fermentation
- C. Digestion
- D. Distillation
2. What pigment makes most plant leaves look green?
- A. Melanin
- B. Chlorophyll
- C. Hemoglobin
- D. Keratin
3. What are the circular rings seen when a tree trunk is cut across, usually forming one each year and revealing the tree's age?
- A. Tree rings
- B. Leaf veins
- C. Sepals
- D. Root hairs