When the abscission layer of a plant grows, it cuts off the circulation of nutrients, sugar and water to the leaves, which causes the chlorophyll that gives the plant its green color to disintegrate and makes carotene sh... More »

Leaves fall from trees because the tree begins to prepare itself for the winter season. Trees seal the spots where the leaves are attached, cutting off water to the leaves. The leaves then change color and fall from the ... More »

"Leaves" is the plural form of the word "leaf," and it has two meanings as a noun. Leaves are foliage that grow on a tree or plant. Less often, "leaves" describes additions to a dinner table that are put in to expand the... More »

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Plants produce food in their leaves through photosynthesis, a process that uses chlorophyll to synthesize sustenance through carbon dioxide, sunlight, water and mineral-related nutrients. Chemical energy from photosynthe... More »

A plant's organ system works with the roots anchoring the plant and absorbing water and nutrients, while the shoots transfer the nutrients to the leaves, which transfer light into energy via photosynthesis. A plant’s roo... More »

Photosynthesis can only occur when a plant has access to water, carbon dioxide, sunlight and chlorophyll. Plant cells naturally produce chlorophyll, and they draw carbon dioxide directly from the air. Water and sunlight ... More »

The longer night as summer turns into fall is responsible for the changing color of leaves in the autumn. As days grow shorter, the longer and cooler nights trigger biochemical changes in the leaves that turn them differ... More »

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