Question

please respond to the following questions in writing, using complete sentences. comprehension questions 1) why are leaves green during most of the year? 2) what is the process of turning sunlight into energy in trees called? 3) what causes leaves to change color in the fall? writing prompt why do you think trees lose their leaves in the fall, and how does it help them survive the winter?

Explanation:

1. Leaves are green for most of the year because they contain chlorophyll, a pigment that absorbs red and blue - light for photosynthesis and reflects green light.
2. The process of turning sunlight into energy in trees is called photosynthesis. In this process, trees use sunlight, carbon - dioxide, and water to produce glucose and oxygen.
3. In the fall, leaves change color because as the days get shorter and cooler, the tree stops producing chlorophyll. Other pigments like carotenoids and anthocyanins that were previously masked by chlorophyll become visible, causing the color change. Trees lose their leaves in the fall as a survival mechanism. Losing leaves reduces water loss through transpiration, which is important in winter when water is scarce and may be frozen. Also, it reduces the weight on branches, preventing damage from snow and ice.

Answer:

1. Leaves are green during most of the year because they contain chlorophyll which reflects green light while absorbing red and blue light for photosynthesis.
2. The process of turning sunlight into energy in trees is called photosynthesis.
3. Leaves change color in the fall because the production of chlorophyll stops as days shorten and temperatures drop, revealing other pigments like carotenoids and anthocyanins. Trees lose their leaves in the fall to reduce water loss through transpiration and the weight on branches, helping them survive winter when water is scarce and there may be snow and ice.