Question

1. a trees mass mainly comes from _, which through the process of photosynthesis is turned into _, a molecule that store the energy from the sun. (hint: each answer is a molecule!) 6. the light energy from the sun that comes into photosynthesis is trapped as chemical energy in ___ at the end of photosynthesis. hint: this is a molecule that the plant needs to survive. 7. lyric and kayla are doing a leaf disc experiment. they have 2 beakers. they sink 5 leaf discs in each beaker. they know that baking soda is a source of carbon dioxide. they put a normal amount of baking soda in beaker #1. in beaker #2, they put extra baking soda. they guess the leaf discs in beaker #2 will start to float faster. why? a. the carbon dioxide will attach to the leaves and cause them to float. b. the extra carbon dioxide will lead to more photosynthesis which will make even more carbon dioxide which will float the leaves. c. the extra carbon dioxide will lead to more photosynthesis which will make oxygen which will float the leaves.

Explanation:

1. During photosynthesis, a tree's mass mainly comes from carbon - dioxide ($CO_2$) which is converted into glucose ($C_6H_{12}O_6$). 6. The light energy from the sun is trapped as chemical energy in glucose at the end of photosynthesis, and glucose is essential for plant survival. 7. In the leaf - disc experiment, carbon dioxide is a reactant for photosynthesis. More carbon dioxide (from extra baking soda in Beaker #2) leads to more photosynthesis, which produces oxygen gas. The oxygen accumulates in air spaces in the leaf discs, causing them to float.

Answer:

1. Carbon - dioxide; Glucose
2. Glucose
3. c. The extra carbon dioxide will lead to more photosynthesis which will make oxygen which will float the leaves.