Plants gg

Question 1

Name the two main transport systems in plants.

Answer 1

Xylem and Phloem

Question 2

What does the Xylem transport?

Answer 2

Water and Minerals

Question 3

What does the Phloem transport?

Answer 3

Food molecules

Question 4

Where does the Xylem carry its contents?

Answer 4

The xylem carries water and mineral salts from the roots up the shoots, to the leaves.

Question 5

Where does the Phloem carry its contents?

Answer 5

From the leaves, (where they are made), to the rest of the plant.

Question 6

Which transport system carries stuff in the transpiration stream?

Answer 6

Xylem

Question 7

Which transport system carries out what is known as translocation?

Answer 7

Phloem

Question 8

What is carried by the phloem?

Answer 8

Sugars; such as sucrose, and amino acids.

Question 9

What is Magnesium used for in plants?

Answer 9

Chlophyll

Question 10

Suggest what happens to plants deprived of magnesium.

Answer 10

The have yellow leaves as they have no chlorophyll, which would die the leaf green.

Question 11

What are the 3 main mineral ions for plant growth?

Answer 11

Nitrates
Phosphates
Potassium

Question 12

What is Potassium used for in plants?

Answer 12

Aids enzymes needed for photosynthesis and respiration.

Question 13

What are Nitrates used for in plants?

Answer 13

Contain Nitrogen for making amino acids / proteins, which are required for cell growth.

Question 14

What are Phosphates used for in plants?

Answer 14

Contain Phosphorus which is used for making DNA and Cell Membranes and are required for respiration / growth.

Question 15

Water is lost through the stoma, which cells control stomatal opening?

Answer 15

Guard cells

Question 16

Leaves are adapted in many ways, they are broad.

Why is this a useful adaptation?

Answer 16

It allows for greater sunlight intake due to greater SA.

Question 17

Which cell is present in the lower epidermis?

Answer 17

Guard Cells (& Stoma)

Question 18

What is the name given to the outer surface of a leaf?

Answer 18

Waxy cuticle

Question 19

Where is the vascular bundle?

Answer 19

Spongy mesophyll layer

Question 20

What organelle is present in the palisade mesophyll layer?

Answer 20

Chlorplasts

Question 21

How is the upper epidermis adapted?

Answer 21

It is transparent to allow light to reach the chloroplasts in the palisade mesophyll layer

Question 22

What is the specialist function of the waxy cuticle?

Answer 22

Prevents loss of water through evaporation.

Question 23

What is contained within the vascular bundle?

Answer 23

Xylem and Phloem

Question 24

In unicellular organisms, why is the diffusion rate quick?

Answer 24

Substances can diffuse directly in and out of the cell across the membrane, the distance of diffusion is very short.

Question 25

Why do multi-cellular organisms need transport systems?

Answer 25

Diffusion is very slow due to the large distances to reach cells.
Therefore, transport systems are required to move substances to and from individual cells quickly.

Question 26

Are roots and shoots positively or negatively Geotrophic?

Answer 26

Roots are positively as they grow towards gravity.

Shoots are negatively as they grow away from gravity.

Question 27

Are roots and shoots positively or negatively Photrophic?

Answer 27

Shoots are positively as they grow towards light.

Roots are negatively as they grow away from light.