1. Which special roots grow down from the stem or branches to help hold a plant steady, like extra legs?

2. Which Thai plant is a good example of using prop roots to stand strong in wet mud?

3. What is the main job of Storage Roots (รากสะสมอาหาร)?

4. Which of these is an example of a Storage Root that we often eat?

5. Yam Beans (มันแกว) and Tapioca (มันสำปะหลัง) are examples of plants with...?

6. What are the two main jobs of a plant's stem (ลำต้น)?

7. Inside the stem, tiny tubes that carry liquids are grouped together. What are these groups called?

8. Which tubes inside the stem carry WATER and minerals UP from the roots?

9. Which tubes inside the stem carry FOOD (sugar) made in the leaves DOWN and AROUND to other plant parts?

10. If you put a celery stalk in colored water, which tubes will show the color first as water moves up?

11. A tall Teak tree (ต้นสัก) in Thailand has what kind of stem?

12. Orange Jasmine (แก้ว) and Ixora (เข็ม) have woody stems but are shorter than trees... What are they called?

13. Marigolds (ดาวเรือง) and Sugar cane (อ้อย) have soft, green stems that are not woody. What type are they?

14. Why do plants like Carrots have thick storage roots?

15. Imagine a plant growing on a windy hill. What kind of roots might help it stay upright the most?

16. Xylem and Phloem work together in the stem. What is their combined main function?

17. What is the biggest difference between a Tree (ไม้ต้น) stem and an Herb (ไม้ล้มลุก) stem?

18. If you look closely at a stem, how does water get from the roots all the way to the top leaves?

19. Why are Vascular Bundles (Xylem and Phloem) so important for a plant?

20. A Desert Rose (ชวนชม) might have roots growing from its lower stem into the soil... These are...?