A 20-foot-tall tree that seemed to have stopped growing was cut down by the forester who was concerned that it might be diseased. She had planted it 43 years earlier. Measurements over the past 10 years had shown that the tree's height varied only 2 or 3 inches each year, some years with a height increase and some years with a height decrease. Other data indicated that the tree had 41 rings of similar width and had produced similar numbers of nuts every year for the last 30 years. Based on these data, which conclusion was most likely a part of the forester's report on the tree's health?
◦ This was a healthy tree that had reached its mature height but otherwise continued normal growth.
◦ Overactivity of the tree's apical meristems likely caused the stunted growth.
◦ The tree did not grow taller because it was putting all of its energy production into nut production.
◦ All growth in this tree stopped 10 years ago.
The family tree of HIV and related viruses
tree-ring data
Phylogenetic Tree
Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world,
Glowing Base Of Tree Made By Arranging Leaves
Bilateral tree stroking across the back.