Which tree has leaves that can be 25 metres long What is the largest flower in the world How much carbon dioxide can one tree absorb Find the answers to these questions and many more as you take a closer look at Plant Structures - by numbers From tiny one-celled algae to the tallest trees plants can live in all sorts of different habitats. Learn more about how plant structures enable plants to adapt and survive in the driest of deserts and the coldest windiest tundra. Each part of a plant has a job to do and they all must work together