Plants need water to make their own food. This is called photosynthesis. It happens in plant leaves. Plants also need carbon dioxide from air and sunlight to make their food. Slide 1 of 3 ...

How does water move through plants to get to the top of tall trees? Here we describe the pathways and mechanisms driving water uptake and transport through plants, and causes of flow disruption.

These take in oxygen when above water and allow water into the plant and filter out salt when under water. Leaves which store salt and then drop off. All plants need light for photosynthesis.