Plants Flashcards
(11 cards)
Purpose of flower
Reproduction
Role of the stem
Transportation
2 organ systems in plants
Shoot and root system
Top layer of leaf
Function and adaptation
Waxy cuticle
Protects leaf, reduces transpiration
Waterproof
Second layer of leaf
Function
Adaptation
Upper Epidermis
Protects leaf, reduces transpiration
Transparent to allow light through
Third layer of a leaf
Function
Adaptation
Palisade Mesophyll
Photosynthesis
Lots of chloroplast
Pushed to the edges by vacuole
4th layer of the leaf
Function
Adaptations
Spongy mesophyll
Some photosynthesis
Air spaces for gas exchange, some chloroplast
Bottom layer of the leaf
Function
Adaptation
Lower epidermis
Gas exchange, allow light in, reduce transpiration
Guard cells - open and close stomata to allow light in for photosynthesis and reduce transpiration
Stomata - allows diffusion of gases in and out the leaf
What mineral ions do plants need
Nitrate
Phosphate
Potassium
Magnesium
What are magnesium ions needed for
Chlorophyll
What are nitrate ions needed for
Amino acids for proteins to make enzymes
