Download Structural Adaptations

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?
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What is the main function of leaves?
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3. Describe how carbon dioxide, water, and oxygen travel in and out of leaves.
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4. Look at Figure 14. The cuticle and epidermis of leaves are transparent. Why would this be an
important characteristic?
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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?
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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?
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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.
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13. Describe gravity’s effect on plant growth in terms of positive and negative responses.
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