Plant structure and functionPresented by : Claire Gui

tissues leaves

vascular tissue system

structure and fuction

ground tissue system

dermal tissue system

stemsroots

woody stemsnonwoody stems

structure & function

What are tissues?• plant's body is made of tis

sues that form organs• vascular plants• 3 types of tissue systems• tissue contains one or mo

re kinds of cells to perform particular functions

structure & function

Dermal tissue system• Structure• the tissue covers outside of

a plant's body• nonwoody parts of the plant form epidermis• made up of a single layer of

flat cells

structure & function

Dermal tissue system• Function• extensions of the epidermal cells on leaves and stems help to slow water loss on root tips help increase water absorption• gas exchange• absorption of mineral nutrients

structure & function

Ground tissue system• Structure• makes up much of the inside of the plants• consists of thin-walled cells remain alive and keep their nucleus after they mat

ure• some thick-walled cells strengthen the stem

structure & function

Ground tissue system• Function• depends on where it is located• leavespacked with chloroplasts specialized for photosynthes

is• stems and rootsstorage of water,sugar and starch• surrounds and supports vascular tissue

structure & function

Vascular tissue system• two kinds of vascular tissues xylem and phloem• contain strands of cells that are stacked end to en

d • carry fluids and dissolved substances

structure & function

Vascular tissue system• Xylem• thick-walled cells• conduct water and mineral nutrients• from roots through its stems to its leaves• lose their cell membranes, nucleus, and cytoplas

m before they can conduct water

structure & function

Vascular tissue system• Phloem• contain cells conduct sugars and other nutrient

s• cell membrane,cell wall and cytopl

asm• cells either lack organelles or have modified organelles

structure & function

Roots• plants are anchored to the spot where they grow b

y roots• roots have characteristic external and internal stru

ctures

structure & function

Stems• Function• support the leaves and house the vascular tissue• transport substances between the roots and leave

s• store water• store nutrient

structure & function

Stems

•non woody stems•woody stems

•What Is The Difference?

structure & function

Stems• non woody stems flexible and usually green buttercup ,corn

• woody stems stiff and non green pines,roses

structure & function

Leaves• primary photosynthetic organs of plants

structure & function

flattened portion blade

blade can be divided into two or more sections leaflet

–Thank you for listening!