The Structure Of Flowering Plants (chpt. 23)

Question 1

Herbaceous plants

Answer 1

Do not contain wood (or lignin)

→ green

Question 2

Woody plants

Answer 2

Contain wood (or lignin)

→ brown

Question 3

Node

Answer 3

Point on stem at which a leaf is attached

Question 4

Internode

Answer 4

Region on a stem between 2 nodes

Question 5

Bud

Answer 5

A potential growth point that may develop into a shoot / leaf / flower

Question 6

Lenticel

Answer 6

An opening on a stem for gas exchange

Question 7

Meristem

Answer 7

A plant tissue capable of mitosis

Question 8

Functions of the root

Answer 8

• anchor plant in soil
• absorb & transport water and minerals
• store food eg. Carrots

Question 9

Functions of the stem

Answer 9

• Transport food and water
• gas exchange (lenticles)
• protection (thorns)

Question 10

Veination

Answer 10

Pattern of veins in a leaf

Question 11

Function of leaves

Answer 11

• Photosynthesis
• gas exchange
• transpiration

Question 12

Name plant tissues

Answer 12

Dermal tissue

Ground tissue

Vascular tissue → xylem & phloem

Question 13

Function of dermal tissue

Answer 13

Protection, gas exchange

Question 14

Function of ground tissue

Answer 14

Photosynthesis, storage, support

Question 15

Function of vascular tissue

Answer 15

Transport water & nutrients

Question 16

Function of xylem

Answer 16

Transport water & nutrients

Question 17

Function of phloem

Answer 17

Transport food (glucose)

Question 18

Cotyledon

Answer 18

Seed leaf

Question 19

Monocotyledon

Answer 19

• One seed leaf
• parallel veination
• scattered vascular bundles

E.g. Grass, tulips

Question 20

Dicotyledon

Answer 20

• Two seed leaves
• net veination
• vascular bundles arranged in a ring

E.g. Roses, beans, peas

Question 21

DRAW:
LS of a root
TS of a root
LS of a dicot stem
TS of a dicot stem
LS of tracheids & vessels
LS & TS of phloem

Question 22

Give two structural differences between xylem and phloem

Answer 22

Xylem has pits, phloem does not
Xylem has lignin, phloem does not
Phloem has companion cells, xylem does not
Phloem has sieve plates, xylem does not

Question 23

Name the pores found in the bark of plants that allow for gaseous exchange

Answer 23

Lenticels

Question 24

Name the mineral required by plants to photosynthesise

Answer 24

Magnesium

Question 25

In which zone of the plant is water absorbed from the soil

Answer 25

Zone of differentiation

Question 26

Name the tissue that transports water in roots

Answer 26

Xylem

Question 27

State one function of dermal tissue in plants

Answer 27

Protection

Question 28

Differences between xylem vessels and xylem tracheids

Answer 28

Tracheids are tapered at both ends, vessels have no end walls
Tracheids are narrower than vessels

Question 29

Zone of elongation vs Zone of differentiation

Answer 29

Elongation - where cells increase in size

Differentiation - where cells become specialised