Transport In Water

Question 1

How is the xylem adapted for their function

Answer 1

They are made up of dead cells
Contains no organelles, no cells wall made up of a continuous hollow tube allowing easiness and fastest possible flow of water
Contains lignin which prevent xylem from collapsing inwards
Contains outs allowing water to enter into the xylem
Transport and water and minerals from he root hair cells to the stem up to the leaf

Question 2

How is the phloem adapted for thei function

Answer 2

Contains sieve tube allowing flow and transport of sapphire
No nucleus to maximise space for sap
Contains living cells
Contains little cytoplasm
Companion cells which Contains mitochondria which produces ATP for the transport of water up the xylem vellsels via translocation

Question 3

Apopalst pathway

Answer 3

Water diffuses into the cell wall of the epidermis and moves through the cell wall of the epidermis, cortex, endothermic whre it reaches the campaign strip it then joins the sympathy pathway

Question 4

Symplast pathway

Answer 4

Water moves through the partially permeable membrane of epidermis by osmosis then travels through the cytoplasm of epidermis then the cortex and then the encoders where the water from the apoplast pathway joins the symplast pathway then it reaches the pericycle where it moves into the xylem by diffusion through their pits

Question 5

Cohesion tension theory

Answer 5

Based on the idea that water molecules stick together by cohesive forces, so that when a water molecules evaporates it puts tension on the column thus pulling another water molecule up to replace it

Question 6

Temperature rate of trnapsiration

Answer 6

As temperature increases the rate of movement of the molecules increases which increase the rate of diffusion of water vapour out the leaf increasing rate of transpiration

Question 7

Air movment

Answer 7

Increase she rate of transpiration as it reduces the size of the shell around the stomata

Question 8

Air humdity

Answer 8

Hugh air humidity decrease the rate of trnapsiration as it decreases the concentration gradient to the inside of the leaf and the air

Question 9

Define transpiration

Answer 9

Loss of water vapour from surface of the plant. Water evaporated from the spongy mesophyll cells

Question 10

Translocatijn

Answer 10

The movmwnt of substances around the plant