Saved Bookmarks
| 1. |
Plants have no circulatory system?then how cell manage intracellular transport? |
|
Answer» Answer Single-celled organisms are in CONSTANT contact with their ENVIRONMENTS, obtaining nutrients and oxygen directly across the cell surface. The same holds true for small and simple PLANTS and animals, such as algae, BRYOPHYTES, sponges, cnidarians, and flatworms. Larger and more complex plants and animals REQUIRE methods for transporting materials to and from cells far removed from the external environment. These organisms have evolved transport system. |
|