Xylem and Phloem

What facet of transport was most diffucult to you?

• Water cohesion and adhesion

• active transport

• pressure

• passive transport

What facet of transport was the easiest to you?

• Water cohesion and adhesion

• active transport

• pressure

• passive transport

Give a scenario of the aspect of transport in the xylem and phloem that you find most difficult. Note the part you have a issue with

Now using the scenario someone already used, fill in the parts they had the most difficulty with.

Tags

NGSS.HS-LS1-2

Why do you think the solutes (the little yellow circles) are going into the roots?

• The solutes are charged and as such pass right into the roots

• The solute concentration outside the plants roots is lower so the solutes are passively transported into the plant roots

• The plant actively transports the solutes into its roots due to there being a higher concentration of solutes already in the plant

• The plant roots are naturally porous and the solutes get in through holes in the roots

Tags

NGSS.MS-LS1-4

NGSS.MS-LS1-5

Why do you think the water is following the solutes(minerals) up into the plant?

• The solutes lower the water potential inside the plant creating a gradient that allows passive transport

• The water is being pumped by in by the plant

• The solutes open up channels that allow the water to enter the plant

• The water potential in the plant is higher than outside it so the water is diffusing into the plant

What force is transporting the water up towards the leaves?

• The sun is pulling it up by evaporating water in the leaves

• The roots are pushing it up by pumping in water

• The leaves are pulling it open by opening and closing to pull in air

• The water is being pumped up from the stem

Tags

NGSS.MS-ESS2-4