Plant Cells, tissues, and organs Flashcards
Cell Specialization
Process by which cells develop similar cells into cells that have specific functions within a multi-cellular organism
Cell Differentiation
Process where a cell changes from one type to another
What is responsible for making specialized cells in plants?
Meristem (Meristematic cells)
Meristematic cells
“Plant” Stem Cells. Unspecialized plant cells that produce new cells that differentiate into the specialized cells that make up different plant tissues.
Hierarchy of Plant
Cells—>Tissues—>Organ—>Organ System—>Organism
Types of plant cells
Xylem
Phloem
3 types of plant tissue
Dermal
Vascular
Ground
4 types of organs
[Roots
Stems
Leaves] Help plant live and grow
Flowers (reproductive organ)
2 organ systems
Root (Below ground)
Shoot (Above ground)
Leaf
Provide surface area where photosynthesis can occur.
Stores starch
Excess glucose turns into…
Starch stored in the leaf
Dermal Tissue (Epidermis)
“barrier”
protects inside
controls exchange of water + gases
Vascular tissue function + consists of
Transports water + sugar (glucose)
Consists of:
Xylem [transports water]
Phloem [transports sugar]
Cuticle
Outermost layer,
waxy,
non cellular
Waterproof coating
Prevent H2O loss
Epidermis
One cell layer thick
Protect inner cells
Palisade cells
Column shaped cells
Site of photosynthesis
Spongy Parenchyma Cells
Loose spaces
Site of Oxygen and Carbon Dioxide
Veins
Xylem + Phloem
Guard Cells
Contain Stomata
Controls gas exchange through stoma (allows CO2 into plant; O2 + H2O out)
Function of male structures in flower
[Stamen]
Anther: Pollen production
Filament: Stalk containing anther
Function of female structures in flower
[Carpel]
Stigma: Sricky top, receptive surface for pollen
Style: Stalk of Carpel
Ovary: Contains ovule. Matured to become fruit
Sepal: Leaf like structure. Protects flower bed
Functions of all organs
Roots: Absorb H2O. Anchor plant
Stem: Support leaves + flowers. Transport H2O + sugar. Store food
Leaves: Photosynthesis
Flowers: Reproductive organs. Produce seeds
Photosynthesis
Process used to convert light energy into chemical energy.
6CO2 + 6H2O ——> C6H12O6 + 6O2
Sunlight energy I(the arrow meaning “in the presence of”)
Ground tissue
Photosynthesis + Storage