Studied by 31 PeopleIndeterminate Growth
Tags & Description
Indeterminate Growth
Grow throughout lifetime (never reaches endpoint)
Determinate Growth
Grow to predetermined adult size
Meristems
Regions of cell devision
Meristem
Results in vertical (primary) growth
Meristem (tip of root)
First structure to emerge from seed and covered by slimy root cap
Apical Meristem
Regions of cell division at tip of plants stem and roots
Zone of elongation
Smooth area behind meristem (cells are enlarging)
Zone of Maturation
Covered by cottony root hairs - cell differentiation is occurring
Cotyledons
Energy source for germination in the seed. Shoot meristem found between cotyledons
Primordia
Structures that are newly developed and not fully formed
Simple
Parenchyma Cells (Simple or Complex)
Simple
Collenchyma Cells (Simple or Complex)
Simple
Sclerenchyma Cells (Simple or Complex)
Complex
Dermal System (Simple or Complex)
Complex
Vascular System (Simple or Complex)
Complex
Ground System (Simple or Complex)
Alive
Parenchyma Cells (Dead or Alive)
Alive
Collenchyma Cells (Dead or Alive)
Dead
Sclerenchyma Cells (Dead or Alive)
Parenchyma Cells
Basic cell type for vascular plants Relatively large Litter differentiation Thin primary cell walls Often function in storage May be photosynthetic
Parenchyma Cells
Found throughout mature tissue and meristems
Progenitor cells of meristems are these cells
Parenchyma Cells
Collenchyma Cells
Support of soft or growing stems
Unevenly thickened cell walls
Collenchyma Cells
Sclerenchyma Cells
Support and structure to plant
Evenly thickened secondary cell walls
Two shapes:
Polygonal Sclereids (fruits and nuts)
Elongated fibers (stems)
Sclerenchyma Cells
Found in fruits, nuts, and stems
Sclerenchyma Cells
Dermal System
Outer Protective Layer
Can be single layered(epidermis) or multi layered (periderm)
Often protected by cuticle
Somata and Guard cells are part of this system
Dermal System
Primary cell type of this system is parenchyma cells
Dermal System
Vascular System
Function: Internal transport and packaged
Vascular System
Contains Xylem and Phloem
Alive
Phloem (Dead or Alive)
Dead
Xylem (Dead or Alive)
Xylem
Transports water from roots to leaves
Long hollow tubes made of stacks of cells
Thick secondary cell walls
Xylem
Phloem
Phloem
Transports sugars for use and storage
Made of stacks of cells (sieve tubes)
Smaller than xylem cells
Thin primary cell walls
Ground System
Function: Majority of plant body structure
Storage, support, and/or metabolism
Ground System
Axillary Bud (bud Primordia)
Precursor of a branch or lateral shoot
Companion Cell
Specialized parenchyma cells in the phloem tissues of the angiosperms
Vascular bundles
Strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the outside and xylem on the inside
Plastids
Class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food
Leucoplast
Colorless organelle found in plant cells, used for the storage of starch or oil
Sclereids
Reduced form of sclerenchyma cells with highly thickened, lignified cellular walls that form small bundles of durable layers of tissue in most plants
Leaf Epidermis
Stoma
Guard cells
