Plants: Root and Shoot system/transport through plant

Question 1

Plant structure and function

Function of veins

Answer 1

provides efficient transport route for necicarry materials for the leaf

Question 2

Plants structure and function

Function of Shoot system

Answer 2

Transportation of nutrients and help with structure of plant

Question 3

Plants structure and function

Function of Root system

Answer 3

Absorb water and minerals and transport to stems

Question 4

Plants structure and function

Function of Flower

Answer 4

reproduction of plant and help union of male and female gametes

Question 5

Plant structure and function

Function of Primary root

Answer 5

Used for structure of the plant

Question 6

Structure of leaf

Recall all structures of a leaf on a diagram in your head

Answer 6

Question 7

Transport through a plant

What tubes do water get transported in a plant

Answer 7

The xylem

Question 8

Transport through the plant

Explain how water enters the xylem

Answer 8

Water moves into the roots using osmosis due to low water potential in the roots. Alkso when transportation occusr it creates tention pulling water into the xylem.

Question 9

Transport through the plant

Outline how water is transported from the root to the leaf

Answer 9

It is transported using xylem tubes. Tention created by transpiration such the water upwards in the xylem. Water is cohesiv with strong hydrogen bonds so it creates a trail up defying gravity

Question 10

Transport through the plant

Explain the process whereby water is lost from the leaf

Answer 10

Evaporation is where water exits the l;eaf in gas form causing nearly 90% water loss when traveling through the plant

Question 11

Transport of the plant

How does the composition of the transport medium change as it moves around the plant

Answer 11

1.First they load the sacrose into the phloem via the companion cell

2.Then water is added to the sucrose from the xylem tubes

3.The water sucrose mixture moves down the hydrostatic pressure gradient in the phloem tubes/siev tubes.

4.The sucrose water mixture is then unloaded into the sink via the companion cell and water moves back into the xylem via osmosis

Question 12

Transport of the plant

Explain why roots can be both a source and a sink of sucrose

Answer 12

Roots can act as sources of sucrose when they recieve excess sugars from leaves during active photosynthesis.

They become sinks when they store and provide sucrose to other parts of the plant during periouds of low photosynthesis or to support growth and metabolic activities

Question 13

Transport of the plant

Compare xylem and phloem tissue

Answer 13

• Phloem uses active process of translocation and xylem use a passive progess driven by transpiration

Question 14

Transport of the plant

Explain why phloem and xylem tissue are found in close association

Answer 14

Because water needs to diffuse through each tube to move sugars through the phloem