Plant Transport

Question 1

What are autotrophic plants?

Answer 1

Plants that make their own food through photosynthesis

Question 2

What does plant metabolism refer to?

Answer 2

Photosynthesis, respiration, cell division, growth and reproduction

Question 3

How is water absorbed by root hairs?

Answer 3

Osmosis

Question 4

What are adaptations of root hairs for absorption?

Answer 4

• thin walls
• not covered by cuticle
• very numerous, provides a large surface area

Question 5

How does water move from root hair cells into the root?

Answer 5

By diffusion

Question 6

What two scientists first described the upwards movement of water in plants?

Answer 6

Henry Dixon and John Joly

Question 7

What is an example of a modified root?

Answer 7

Carrot tap roots

Question 8

What is an example of a modified stem?

Answer 8

Potato tubers

Question 9

What is an example of a modified leaf?

Answer 9

Onion bulbs

Question 10

What are openings in the stems of plant for gas exchange called?

Answer 10

Lenticels

Question 11

What diffuses inwards through the stomata?

Answer 11

Carbon dioxide

Question 12

What diffuses outwards through the stomata?

Answer 12

Oxygen and water vapour

Question 13

What is the controlling factor in gas exchange in leaves?

Answer 13

Carbon dioxide

Question 14

What are the things needed to be mentioned in the cohesion-tension model?

Answer 14

TACT- Tension, Adhesion, Cohesion, Transpiration

Question 15

What prevents xylem from collapsing inwards?

Answer 15

Lignin