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The spines on these plants are modified leaves. Cacti also experiences dormancy, given the
environment where they live. That is, they stopped growing in the summer and resume growing in
the fall. Based on the information above:
1. What is the purpose of spines on cacti? What will happed if cacti experiences mutations that
modified the spines to true leaves (broad leaves)? Why do you think so?
2. What is the purpose of staying dormant in the summer? Why do you think so?
3. What will happen if they failed to go dormant in the summer? Why do you think so?
4. Cacti stems are actually the part that primarily serve as photosynthetic site (not the leaves, they
don't have leaves). Briefly describe what's unique about cacti photosynthesis. Are they C3, C4,
CAM? Why do they employ that adaptation strategy?

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The spines on these plants are modified leaves Cacti also e.pdf

  • 1. The spines on these plants are modified leaves. Cacti also experiences dormancy, given the environment where they live. That is, they stopped growing in the summer and resume growing in the fall. Based on the information above: 1. What is the purpose of spines on cacti? What will happed if cacti experiences mutations that modified the spines to true leaves (broad leaves)? Why do you think so? 2. What is the purpose of staying dormant in the summer? Why do you think so? 3. What will happen if they failed to go dormant in the summer? Why do you think so? 4. Cacti stems are actually the part that primarily serve as photosynthetic site (not the leaves, they don't have leaves). Briefly describe what's unique about cacti photosynthesis. Are they C3, C4, CAM? Why do they employ that adaptation strategy?