Science 10 Chapter 9.3_student Miss Acorn

Unit C – Cycling of Matter in Living Systems (pages 256 – 359 in your text)

9.3 Water Transport in Plants (pages 331– 340)

In multicellular organisms water must be transported _____________________________.

Some trees can transport water over __________ from the root tips to the highest leaves.

Xylem and Phloem Vessels Vascular plants have a system of vessels that transport

___________________________________ ________________ throughout the plant. These vessels are like the _______________________ in your body. ________________________________ are the specialized tissues that make up this

transport system.

Xylem Recall that the xylem tissue transports ___________________________________ from

the ___________________________________. Xylem vessels are ______________________ consisting of only ________________. At one point xylem tissues are living, in _________________ the xylem tissue is ______. The hollow tubes are _______________________________, forming _______________

_________________________ called xylem vessels. _________________ extend from near the tips of the roots up into the rest of the plant. Without water transport the plant would die! (no photosynthesis)

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Science 10 Chapter 9.3_student Miss Acorn

Phloem Recall that the phloem tissues are responsible for

_____________________________ (the product of photosynthesis) throughout the plant.

Phloem is composed of _____________________ joined end to end to form ___________________.

Phloem is composed of __________________ and have porous walls to exchange materials with neighbouring cells.

_________________ flows down the phloem vessels ______________________ (where it is produced) ________________ (where it is stored)

Vascular Bundles

Xylem and Phloem are grouped together in bundles. These are called ___________________.

Water Uptake in Roots Water and minerals enter the plant from ____________. A the core of the root are _____________________ with

xylem and phloem. Epidermal cells cover the roots and are _____________

_______________ to water. Water enters the cells of the epidermis by ___________. Root hairs increase ________________________ of the

roots for absorbing water and minerals. Each root hair is an outgrowth of a single ___________

________. Water continues diffusing through epidermal cells until

it reaches the _____________________. The water and minerals that collects in the root xylem is

called ________________.

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Science 10 Chapter 9.3_student Miss Acorn

The xylem sap moves _________________ from the roots , through the stem and _________________ ______________.

The vessels branch into many veins once in the leaf.

Mineral Uptake in Roots

Roots must use _____________________ to absorb minerals out of the soil and into the root.

The minerals have a lower concentration in the ________ than in the ___________.

The root must move the minerals _____________ their _________________________________.

Properties of Water

Water is _____________; molecules of water tend to ________________________. Water is _____________; molecules of water tend to _________________________. Cohesion and adhesion allow a column of water in a xylem vessel to move against the

______________________________.

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Soil Roots

Science 10 Chapter 9.3_student Miss Acorn

Root Pressure The ____________________ inside the

root xylem pushes a column of water upwards.

This is called ___________________. As the root actively transports minerals

into the root, __________ ___________ by osmosis.

This increases the _______________, forcing the xylem sap _____________.

Root pressure ____________, cohesion _____________________ __________ together. Adhesion _____ ___________________________ from falling back down.

Sugar Transport in Phloem After water and minerals have been

transported to the leaves the plant is ready for _______________________.

Glucose produced during photosynthesis must be transported for use in _________ ___________________.

As the sugar concentration increases within the phloem cells, ___________________ by osmosis.

The _________________ with an increase in turgor pressure.

The phloem sap (sugar, nutrient, and water mixture) flows down the _______________ ______________ and into the roots.

Summary of Gas and Water Movement in Plants

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Science 10 Chapter 9.3_student Miss Acorn

What to do: label the movement of oxygen, water, carbon dioxide, sugar, and minerals

Homework: Check Your Understanding page 340

▪ # 1 – 7, omit #4 Study for “gas and water transport” quiz tomorrow

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