transport in plants

Describe the distribution of phloem and xylem in the roots

The xylem and phloem are found at the center of the root hair cell

Describe the distribution of phloem and xylem in the stem

• The xylem is located on the inner side of the vascular bundle, providing support and transporting water and ions from the roots to the leaves

• phloem is located on the outer side of the vascular bundle, involved in the transport of sugars from leaves to the rest of the plant.

How does the structure of the xylem relate to its function

• The xylem is composed of specialized cells that form continuous tubes allowing efficient water transport

• The thick lignified wall provides structural support enabling the plant to maintain upright growth and withstand enviromental stresses

How does the structure of the phloem relate to its functions?

• The sieve tube elements have thin walls and lack a nucleus

• Sieve tube elements contain pores that allow for the movement of sap between adjacent cells

• Parenchyma cells are used as storage cells

How does the structure of the companion cell relate to its function?

• They are specialized cells that transport food such as sugars which are produced during photsynthesis

• The nucleus in the companion cells control the activities of the sieve tube element

What substance can be transported within plants dissolved in water

Some mineral ions and organic compounds

How does water move from the soil to the xylem through the apoplast pathway

1. Water moves into root hair cells by osmosis down a concentration gradient from a high water potential to a low water potential