Tropical forests are likely to have broadleaf trees. These trees are also known as angiosperms and are characterized by their large, flat leaves. Broadleaf trees are very common in tropical forests due to the warm and humid climate, which provides ideal growing conditions for this type of tree. They are able to photosynthesize efficiently in the low light conditions of the forest floor, which allows them to thrive in the dense canopy of the forest. Coniferous trees are typically found in cooler climates and tend to have needle-like leaves. Saguaro cacti are found in deserts and not in tropical forests. Deciduous trees, which lose their leaves in the winter, may be found in some tropical forests, but broadleaf trees are generally the dominant type.