AP BIOLOGY

PLANTS

ROOTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If you cut down a tree and look inside, the xylem will tell you:
A
what type of tree it is
B
how healthy the tree is
C
how old the tree is
D
what fruits the tree grows
Explanation: 

Detailed explanation-1: -The girth of a tree can be used to estimate its age, as roughly a tree will increase it’s girth by 2.5cm in a year. So, simply measure around the trunk of the tree (the girth) at about 1m from the ground. Make sure you measure to the nearest centimetre. Then divide the girth by 2.5 to give an age in years.

Detailed explanation-2: -As woody plants grow in diameter a new layer of wood is produced each year by the cambium. This layer is called as annual ring or growth ring. By counting the rings, the age of a tree can be determined. This use of tree-ring dating to find the age of a tree is also known as dendrochronology.

Detailed explanation-3: -Every year, trees form new cells arranged in concentric circles. These concentric circles are called annular rings. By counting these rings, the age of a tree can be estimated.

There is 1 question to complete.