Question

A) Use the differences in stem morphology, primary and secondary growth to explain why eudicots are also called woody plants. B) Why do trees die when the bark is removed from the circumference of the tree?

Answer 1

A) Stems connects the roots to the leaves, provides support, stores food and hold the leaves,flowers and buds.

The increase in the shoot and root is referred to as primary growth. It is the result of cell division in the shoot apical meristem. Secondary growth is characterized by an increase in thickness or girth of the plant. It is caused by cell division in the lateral meristem.

Eudicots are abundant group of angiosperm plants.asthey are angiosperms they are seed bearing, vascular plants that produce flowers, fruit and pollen. They are also often woody plants and can grow into giant, long living trees. Eudicots are most evolutionary and most advanced plants on earth. Eudicots have two cotyledons, petal and floral parts in the multiples of four or fives, distinct petals and sepals, net like pattern of veins in leaves and tap roots rather than fibrous roots.

B) completely removing the bark from the tree will kill the tree. Removing of bark known as girdling of tree. The reason for damage due to girdling is the Phloem the layer of tissue which below the bark is responsible for carrying food produced in the leaves by photosynthesis to roots. If this is removed the tree will starve and die. Without these food, the roots ultimately die and cease sending water and minerals to the leaves.