Read This! Inside plant veins are two different types of tissues. Xylem carries water and minerals up from the roots of the plant and phloem carries the sugars (nutricnts) away from the leaf to areas where the plant is growing or to storage areas in the plant. 17. Describe the view of the vein(s) in each model. Top, bottom inside, outside? a. In the leaf in Model 1. 4. Within the leaf cross section in Model 2. 8. How does the placement of veins help to carry out their function of transporting materials to and from the leaf? 9. Which kind(s) of cells have chloroplasts in them? 10. Remembering the function of chloroplasts, in which part(s) of the leaf is photosynthesis taking place? 11. The green color of chloroplasts is due to a pigment in them that absorbs light energy. Knowing this, infer which layer inside a leaf gives the whole leaf its green color. Write one complete sentence to express your reasoning 12. Through which layer(s)does light energy travel to reach the palisade mesophyll? 13. What would be the advantage(s) to having no chloroplasts in the cells of the spongy mesophyll?

Question

Read This! Inside plant veins are two different types of tissues. Xylem carries water and minerals up from the roots of the plant and phloem carries the sugars (nutricnts) away from the leaf to areas where the plant is growing or to storage areas in the plant. 17. Describe the view of the vein(s) in each model. Top, bottom inside, outside? a. In the leaf in Model 1. 4. Within the leaf cross section in Model 2. 8. How does the placement of veins help to carry out their function of transporting materials to and from the leaf? 9. Which kind(s) of cells have chloroplasts in them? 10. Remembering the function of chloroplasts, in which part(s) of the leaf is photosynthesis taking place? 11. The green color of chloroplasts is due to a pigment in them that absorbs light energy. Knowing this, infer which layer inside a leaf gives the whole leaf its green color. Write one complete sentence to express your reasoning 12. Through which layer(s)does light energy travel to reach the palisade mesophyll? 13. What would be the advantage(s) to having no chloroplasts in the cells of the spongy mesophyll?

Answer 1

1. The veins in the leaf in Model 1 are located on the top and bottom of the leaf, running parallel to each other.2. The veins in the leaf cross-section in Model 2 are also located on the top and bottom of the leaf, running parallel to each other.3. The placement of veins helps to carry out their function of transporting materials to and from the leaf by providing a pathway for the movement of water, minerals, and nutrients.4. The cells that have chloroplasts in them are the mesophyll cells.5. Photosynthesis is taking place in the palisade mesophyll of the leaf.6. The layer inside a leaf that gives the whole leaf its green color is the palisade mesophyll.7. Light energy travels through the upper epidermis layer to reach the palisade mesophyll.8. The advantage of having no chloroplasts in the cells of the spongy mesophyll is that it allows for the exchange of gases, such as carbon dioxide and oxygen, which is essential for photosynthesis.

Answer 2

## Step 1The first question asks for the description of the veins in the leaf in Model 1. This requires a detailed observation of the model and understanding of the structure of the leaf.## Step 2The second question asks for the description of the veins in the leaf cross-section in Model 2. This also requires a detailed observation of the model and understanding of the structure of the leaf.## Step 3The third question asks how the placement of veins helps to carry out their function of transporting materials to and from the leaf. This requires an understanding of the role of veins in the leaf and how they contribute to the overall function of the leaf.## Step 4The fourth question asks which kind(s) of cells have chloroplasts in them. This requires knowledge of the structure of plant cells and the role of chloroplasts.## Step 5The fifth question asks in which part(s) of the leaf is photosynthesis taking place. This requires knowledge of the process of photosynthesis and where it occurs in the leaf.## Step 6The sixth question asks which layer inside a leaf gives the whole leaf its green color. This requires knowledge of the structure of the leaf and the role of chloroplasts.## Step 7The seventh question asks through which layer(s) does light energy travel to reach the palisade mesophyll. This requires knowledge of the structure of the leaf and the path of light energy.## Step 8The eighth question asks what would be the advantage(s) to having no chloroplasts in the cells of the spongy mesophyll. This requires knowledge of the role of chloroplasts and the function of the spongy mesophyll.

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