Transports In Plants

Question 1

What is the relationship between the size of an organism and SA:V ratio

Answer 1

As something gets bigger the SA: V ratio decreases

Question 2

Why do larger multicellular organism require transport systems

Answer 2

They have a small SA: V ratio and diffusion is no longer efficient

Question 3

Xylem

Answer 3

Transpiration system
Water and minerals
Transports substances up the stem from the roots

Question 4

Phloem

Answer 4

Translocation system
Sugars and amino acids
Leaves -> stem -> stored as starch
Leaves -> growing tissues ->respiration

Question 5

Xylem structure

Answer 5

Made up of dead cells
Continuous tube
Thick walls made of lignin the help strengthen plant

Question 6

Phloem structure

Answer 6

Made up of living cells
Cell walls have holes called sieve plates

Question 7

Transpiration

Answer 7

Loss of water from a plant

Question 8

^ light intensity ^ transpiration up until a point

Answer 8

^ light ^ photo
Stomata open for CO2 to move in so water is also lost

Question 9

^ temp ^ transpiration

Answer 9

^ temp ^ evaporation from surface of leaf because water has more KE

Question 10

^ wind speed ^ transpiration

Answer 10

^ wind moves H2O vapor away from outside of leaf
Dec WP ^ WP gradient so more water is also lost

Question 11

^ humidity dec transpiration

Answer 11

^ hum ^ moisture in air ^ WP outside of leaf dec WP gradient so less water is lost

Question 12

Osmosis

Answer 12

The net movement of water from an area of higher water potential to an area of lower water potential across a partially permeable membrane

Question 13

Hypotonic solution

Answer 13

Turgid
Water moves in by osmosis
High water potential

Question 14

Hypertonic solution

Answer 14

Flaccid
Water moves out by osmosis
Low water potential