(A)______plants have a higher temperature optimum than the plants adapted to (B)_____ climates.

Answer

To answer the question, we need to fill in the blanks with the appropriate types of plants and climates based on their temperature optima.

**Step 1: Identify the types of plants.**
- We know that there are two main types of photosynthetic plants: C3 and C4 plants. C4 plants are known to thrive in higher temperatures, while C3 plants are more suited to cooler temperatures.

**Step 2: Identify the climates associated with these plants.**
- C4 plants are typically found in tropical climates where temperatures are generally higher throughout the year.
- C3 plants are found in temperate climates, which have lower average temperatures compared to tropical climates.

**Step 3: Fill in the blanks.**
- For (A), we can conclude that "C4" or "tropical" plants have a higher temperature optimum.
- For (B), we can conclude that "C3" or "temperate" climates are adapted to lower temperatures.

**Final Answer:**
(A) C4 plants have a higher temperature optimum than the plants adapted to (B) temperate climates.

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