"We are very familiar with two things found in large woody plants, wood and bark. The wood is essentially made of and the bark is essentially made of ."

Xylem;phloem and cork

Explanation:

Wood is mainly known as secondary xylem found in trees

Xylem is basically the vascular tissue which is responsible for the conduction of water and nutrients from the roots to shoots and leavesSecondary xylem is formed from secondary growth and is associated with lateral growth and grows from the vascular cambium Its cell walls are thickened by deposition of lignin which provides mechanical support to plants and consists of tracheids and vessels that are shorter and widerIn large woody plants secondary xylem get differentiated into heartwood and sapwood

Bark is essentially made of phloem and cork

Bark sole purpose is to provide protection to treesThe inner bark is produced by vascular cambium which consists of secondary phloem whose innermost layer transports food from the leaves to rest of the plantThe outer bark is a dead tissue which is the product of cork cambium

The answer would be

Hydrosphere is the correct answer