Fernan Federici & Jim Haseloff, Wellcome images
This amazing image is a described as a “confocal micrograph shows the tissue structures within the leaf of an Arabidopsis thaliana seedling”. However, I have no idea what that is but a quick google search turns up the wiki page which includes a picture of the plant itself.
This scraggly plant to my uneducated eye looks like something that squeezes its way up through the cracks in the pavement and deserves a good dose of weedkiller. However, after seeing the seedling image perhaps I’ll feel differently in future.