Fill in the blanks with the correct words: 1. Green plants use.........and.........to make food. 2. Plant nutrition is......... 3. Starch can be tested by......... 4. Carbon dioxide is necessary for......... 5. The chemicals used to test the presence of starch in a leaf is......... 6. In photosynthesis solar energy is converted into.........

Here are the completed sentences:

1) Green plants use carbon dioxide and water to make food.

$$\boxed{\text{carbon dioxide, water}}$$

2) Plant nutrition is autotrophic.

$$\boxed{\text{autotrophic}}$$

3) Starch can be tested by iodine solution.

$$\boxed{\text{iodine solution}}$$

4) Carbon dioxide is necessary for photosynthesis.

$$\boxed{\text{photosynthesis}}$$

5) The chemical substance used to test the presence of starch in a leaf is iodine solution.

$$\boxed{\text{iodine solution}}$$

6) In photosynthesis solar energy is converted into chemical energy.

$$\boxed{\text{chemical energy}}$$