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Horticulture topic 3 > Plant body > Flashcards

Flashcards in Plant body Deck (59)
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1

Vegetative organs

-root
-stem
-leaf

2

reproductive organs

-flower
-fruit
-seed

3

root functions:

-absorb water and nutrients
-ancher and support plant
-storage for photosynthate
-propigation

4

epidermis

outer layer of root

5

cortex

just below epidermis, mostly storage parenchyma cells

6

endodermis

only in roots, surrounded by a waterproof Casparian strip

7

pericycle

outermost layer of the central core, meristematic region producing lateral roots

8

Vascular cylinder

includes xylem, phloem, vascular cambiam, and pith

9

root cap

protects root apical meristem

10

meristematic region

actively dividing cells that produce primary tissue

11

region of cell elongation

cells elongate, make roots longer

12

region of maturation

cells differentiate, root hairs formed here, active absorption zone

13

Primary root type

developes from radicle, vertical growth

14

secondary root type

arise from primary root, horizontal growth

15

tap

primary root that retains dominance

16

fibrous

lateral roots growing near surface

17

adventitious

roots that form anywhere other than radicule or its extensions

18

fleshy storage

turnip, carrot

19

The stem

-arises from the epicotyl or a bud
-transport of water, nutrients and photosynthate
-storage
-support/structure (trunk, branches)
-protection (thorns)
-propagation (bulbs, rhizomes

20

stem tissues

-epidermis, cork, phelloderm
-cortex: between epidermis and vascular tissue
-vascular system
-meristematic tissue

21

Anatomical differences: monocots

-primary growth ONLY
-scattered vascular bundles
-no vascular cambium

22

Anatomical differences: Herbaceous

-vascular bundles arranged in a ring

23

Anatomical differences: woody

Vascular rings

24

trunk

main axis of stem system

25

branch

lateral portion of a tree

26

shoot

stem with current season growth on it

27

twig

stem with current season growth, after leaf abscision

28

spur

stem with short internodes on some fruit plants

29

water sprouts

vertical shoot arising from latent buds on branches

30

thorn

for protection