Question

1. a. photosynthesis b. chlorophyll c. glucose d. leaves 2. what four things does a tree need for photosynthesis? 3. what causes a trees leaves to appear green? 4. what signals a tree to prepare for winter? a. the days become colder. b. the weather becomes dry. c. there are more rainy days. d. there are fewer hours of sunlight. 5. how does a tree get water? a. it makes water in its leaves. b. it turns glucose into water. c. it absorbs water through its roots. d. it uses photosynthesis. 6. why do a trees leaves change color in the fall? a. the tree has less chlorophyll. b. the tree has less water. c. the tree has no leaves. d. the tree is growing quickly before the winter sets in.

Explanation:

1. Photosynthesis is the process, chlorophyll is the pigment involved, glucose is a product, and leaves are the site. The answer is a as it is the process name.
2. A tree needs sunlight, carbon - dioxide, water and chlorophyll for photosynthesis.
3. Chlorophyll in the leaves absorbs most colors of light but reflects green light, causing the leaves to appear green.
4. As the days get shorter (fewer hours of sunlight), it signals a tree to prepare for winter. This is related to the photoperiodic response.
5. Trees absorb water through their roots from the soil.
6. In the fall, as the days get shorter and temperatures drop, the production of chlorophyll in the leaves slows down and eventually stops, causing the tree to have less chlorophyll and the other pigments (like carotenoids and anthocyanins) to show through, changing the leaf color.

Answer:

1. a. photosynthesis
2. Sunlight, carbon - dioxide, water, chlorophyll
3. Chlorophyll reflects green light.
4. d. There are fewer hours of sunlight.
5. c. It absorbs water through its roots.
6. a. The tree has less chlorophyll.