Select the most accurate of the following statements: Group of answer choices The vascular bundles of gymnosperms contain xylem only, whereas those of angiosperms contain both xylem and phloem Angiosperms produce specialized shoots bearing modified leaves to attract pollinators and protect gametes All gymnosperms have narrow, needle-like leaves whereas all angiosperms have broad, net-veined leaves Gymnosperm embryos are exposed to the elements, whereas the embryos of angiosperms are packaged with a food source inside a seed coat Gymnosperms have substantially more species than angiosperms

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.