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Name___________________________________________ Period_____ Adaptations in Plants Reading Activity Read the Class Set on Seed Plants and answer the following questions. Structural Adaptations 1. What are the four basic components of seed plant? a. ___________________________________ b. ___________________________________ c. ___________________________________ d. ___________________________________ 2. Why do seeds contain stored food? ______________________________________________________________________________ What is the main function of leaves? ______________________________________________________________________________ 3. Describe how carbon dioxide, water, and oxygen travel in and out of leaves. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 4. Look at Figure 14. The cuticle and epidermis of leaves are transparent. Why would this be an important characteristic? ______________________________________________________________________________ ______________________________________________________________________________ 5. What are the two main functions of a stem? a. ________________________________________________________________________ b. ________________________________________________________________________ 6. A cactus has a specialized stem that stores water and also carries out photosynthesis. Why would this be beneficial for the cactus? ______________________________________________________________________________ ______________________________________________________________________________ Name___________________________________________ Period_____ 7. What are the three functions of roots? a. _______________________________________________________________________ b. _______________________________________________________________________ c. _______________________________________________________________________ 8. Why would the root system of the tree in Figure 16 need to be so large? ______________________________________________________________________________ ______________________________________________________________________________ 9. What are the three types of tissue in a vascular plant and give their functions. a. _______________________________________________________________________ b. _______________________________________________________________________ c. _______________________________________________________________________ Plant Responses 10. What is a stimulus? 11. What is a tropism? _______________________________________________________________ 12. A plant’s response to light is called a phototropism. Explain why a plant bends towards a light source. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 13. Describe gravity’s effect on plant growth in terms of positive and negative responses. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________