One goes up... and one goes down. I was a college freshman in Botany 101 when I first learned about xylem and phloem, the two transport tissues which carry water and nutrients up and down a tree's ...

Plant and Soil, Vol. 155/156, Selected papers from the PROCEEDINGS OF THE TWELFTH INTERNATIONAL PLANT NUTRITION COLLOQUIUM (October 1993), pp. 273-276 (4 pages) Xylem sap of sinker (tap) root, cluster ...

It turns out that the biggest fruit from giant pumpkin plants has a lot more phloem than other large squashes, allowing them to take up plenty of sugar, and so providing the pumpkins with enough of ...

Journal of Tropical Ecology, Vol. 29, No. 6 (NOVEMBER 2013), pp. 467-476 (10 pages) We documented one of the most species-rich assemblages of tropical rain-forest Auchenorrhyncha, comprising 402 ...

When plants evolved a vascular system containing cells that facilitate the transport of water and nutrients, this not only allowed them to conquer land, but also provided the structural stability that ...

Plants come in all shapes and sizes, allowing them to fit into unique niches in the landscape, but they can be quite complex organisms. In order to select the most appropriate plants for a given ...

I love winter and have been hoping for a lot more snow, which we got last week, but only after an unseasonably (record-smashing) warm spell. Much as I love winter and want to stay in the moment, that ...

For the first time, researchers have characterized the genome arrangement of tree ferns, which sheds new insight into how ferns evolved. Land plants evolved 470 million years ago from algae and have ...

The xylem and phloem cells produced by the fusiform initials have their long axes oriented vertically and make up what is known as the axial system of the secondary vascular tissue. The ray initials ...