Plant Transport

Question 1

What is a dicot ?

Answer 1

Plants that produce seeds that contain 2 cotyledons act as food stores for developing embryo to form first leaves after germination

Question 2

What are cotyledons?

Answer 2

In the embryo and provide nutrients

Question 3

What is the parenchyma in the xylem?

Answer 3

Packs around xylem vessels and stores food containing tannin deposits

Question 4

What is tannin?

Answer 4

Toxic to insects

Question 5

What are companion cells in phloem?

Answer 5

Large nucleus and lots of mitochondria needed to help load assimilates into sieve tubes

Question 6

What is plasmodesmata in phloem?

Answer 6

Little channels that connect sieve tube members and companion cells that allow movement of glucose in sap for photosynthesis

Question 7

What is endodermis in roots?

Answer 7

Layer of cells that surround vascular bundle

Question 8

What is the cambium in the stem?

Answer 8

Meristems that divide to produce new xylem and phloem

Question 9

Is is the Collenchyma in the leaf?

Answer 9

Provides structure and flexibility to leaf to allow bending in wind without breakage

Question 10

What is the role of epidermal tissue in leaf?

Answer 10

Covered with waxy cuticle to reduce water loss by evaporation

Question 11

What is the role of palisade mesophyll in leaf?

Answer 11

Contain most chloroplasts and on upper side of leaf which gets most light

Question 12

What is the role of spongy mesophyll in leaf?

Answer 12

Lots of air spaces to increase rate of diffusion

Question 13

What is the role of lower epidermis in leaf?

Answer 13

Lots of stomata for gas exchange

Question 14

Function of xylem in plants?

Answer 14

-vascular tissue carries dissolved minerals and water up the plant
-structural support
-food storage

Question 15

Where are xylem vascular bundles found in roots?

Answer 15

-centre where centre core is xylem tissue
-helps roots withstand pulling strains when plants transports water upwards and grows

Question 16

Where are xylem vascular bundles found in stems?

Answer 16

-vascular bundles are located around the outside
-xylem tissue is found on the inside
-supports the plant

Question 17

Where are xylem vascular bundles found in leaves?

Answer 17

-vascular bundles form the midrib and veins
-xylem tissue found on the side of bundles (closest to upper epidermis)

Question 18

What is the function of phloem in plants?

Answer 18

-transport organic compound from source to the sink
-UP AND DOWN

Question 19

What is poem made up of ?

Answer 19

-sieve tube elements
-companion cells
-parenchyma -> storage
-strengthening fibres

Question 20

Where are phloem vascular bundles found in roots?

Answer 20

-in the centre

Question 21

Where is phloem tissue found in roots?

Answer 21

Edges of the centre core

Question 22

Where are phloem vascular bundles found in stems?

Answer 22

-around the outside

Question 23

Where is phloem tissue found in stems?

Answer 23

On the outside (closest to the epidermis)

Question 24

Where are phloem vascular bundles found in leaves?

Answer 24

-form the midrib and veins

Question 25

Where is phloem tissue found in leaf?

Answer 25

Lower side of bundles (closest to epidermis)