Which of these is not a tree?

A transverse section of the trunk of a tree shows concentric rings which are known as growth rings. How aree these rings formed? What is the significance of these rings?

Why root pressure is not an important factor for upward movement of water in the tall trees.

Solve the following: People of Sundargram planted trees in the village garden. Some of the trees were fruit trees. The number of non-fruit trees were two more than three times the number of fruit trees. What was the number of fruit trees planted if the number of non-fruit trees planted was 77?

A tree stands vertically on the bank of a river. From a point on the other bank directly opposite the tree, the angle of elevation of the top of the tree is 60^@ . From a point 20 m behind this point on the same bank, the angle of elevation of the top of the tree is 30^@ . Find the height of the tree and the width of the river.

An orchid plant Is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?

What is difference between the stems of shrub nad tree?