1. Unit 21 Plants

2. KEY CONCEPTPlant life began in the water and became adapted to land.

4. both are photosynthetic eukaryotes

5. both have the same types of chlorophyll

6. both use starch as a storage product

9. brings water and mineral nutrients up from roots

10. disperses sugars from the leaves

15. KEY CONCEPTPlants can be classified into nine phyla.

22. A fruit is a mature ovary of a flower.

24. D. Seed plants

25. KEY CONCEPTThe largest phylum in the plant kingdom is the flowering plants.

27. Surrounds and protects seed(s)

30. Annuals mature from seed, flower, and die in one year.Biennials take two years to compete life cycle. Foxglove

32. Perennials live more than two years.Big bluestem

33. KEY CONCEPT Humans rely on plants in many ways.

34. Agriculture provides stable food supplies for people in permanent settlements. Botany is the study of plants. Ethnobotany explores how people in different cultures use plants.

36. farming requires people to stay in one place

38. billions of dollars of plant products traded each year