GUSTOIMAGES / SCIENCE PHOTO LIBRARY GUSTOIMAGES / SCIENCE PHOTO LIBRARY
Ivy leaves on a vine. Ivy (Hedera sp.) is a plant that forms woody climbing or trailing vines. The leaves are lobed and evergreen (they are not lost in the winter). Several developing leaves are seen alongside the mature leaves. The leaves contain the green pigment chlorophyll that is used to trap the energy of sunlight during photosynthesis. A network of veins carries water and nutrients in and out of the leaves.
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