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PLANTS Chapters 23 and some of 24 - Coggle Diagram
PLANTS Chapters 23 and some of 24
Types
woody due to lignin - hard eg Ash tree
herbaceous - soft tissue eg grass
MONOCOT
1 cotyledon (seed leaf food store)
parallel veins
vascular bundles scattered
DICOT
2 cotyledons
net veins
vascular bundles in a ring
ACT 17 Pg 273
Diagram 23.20 Pg 272
:
STEMS
Summer
Node = point where leaf joins stem
Internode = space between nodes on stem
bud = new growth from here
Winter
Diagram 23.8 Pg 267
apical bud = top/ highest bud
leaf scar = scar where leaf fell off
girdle scar = distance between these equals one years growth
Function
Transport minerals
Support
Transport water
LEAVES
Petiole = leaf stalk
Lamina = leaf blade
DRAW TS of leaf Pg 279 24.4
VEINS
Parallel eg grass (moncot)
Net = buttercup (dicot)
Functions
Photosynthesis
Gas exchange = CO2 in and O2 out
Transpiration via stomata and guard cells
Night = dark = no photosynthesis so CO2 builds up = stomata close
Day = light = photosynthesis uses CO2 = CO2 drops = stomata open
ROOTS
Tap = long tap root = dandelion
Fibrous = short equal length = grass
Adventitious = ivy roots sticking to walls
ZONATION - LS diagram Pg 266 23.5
Protection zone = root cap
Meristematic zone = mitosis for growth
Elongation = cells grow longer
Differentiation = new tissues form
TS of root diagram - tissues Pg 271 23.18
Function
Absorb water
Absorb minerals
Store food
STORAGE
Modified root = TAP ROOT = carrot
Modifies stem (underground) = TUBER = potato
Modified leaves = BULB = Onion