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Vein provide (a) to the leaf blade and a...

Vein provide (a)____ to the leaf blade and act as channels of (b)_____

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**Step-by-Step Solution:** 1. **Understanding the Function of Veins in Leaves:** - Veins in leaves are part of the vascular system. They provide structural support to the leaf blade and help maintain its shape. 2. **Identifying the First Blank (a):** - The primary role of veins is to provide support and rigidity to the leaf structure. Therefore, for the first blank (a), we can fill it with the word "support." 3. **Identifying the Second Blank (b):** - Veins also serve as channels for the transport of essential substances within the leaf. They facilitate the movement of water, minerals, and food (sugars) throughout the plant. The specific tissues involved in this transport are xylem (for water and minerals) and phloem (for food). Thus, for the second blank (b), we can fill it with the word "transport." 4. **Finalizing the Answer:** - Combining our findings, we conclude that the complete sentence is: "Veins provide (a) support to the leaf blade and act as channels of (b) transport." **Final Answer:** Vein provide (a) **support** to the leaf blade and act as channels of (b) **transport**. ---
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