plant structure & function. main plant tissues dermal tissue - covers the outside of the plant...
TRANSCRIPT
Plant Structure & Function
Main Plant Tissues• Dermal Tissue - covers the outside of
the plant & protects it• Ground Tissue - inside the dermal
tissue; provides support, stores materials & is the site of photosynthesis
• Vascular Tissue - transports water & nutrients throughout the plant– Xylem transports water– Phloem transports food
Roots• Roots anchor plants & absorb mineral
nutrients from the soil
root cap
1. Root cap covers the tip &
protects the growing part of the root
Root Parts
Apical meristem
.
2. Apical meristem is where growth occurs.
3. Vascular cylinder is in the center of the root & contains xylem and phloem
Vascular Cylinder
.4. Root hairs
increase surface area to absorb water & nutrients.
Stems• Stems support plants, transport
materials & provide storage
• Primary Growth• Occurs in apical meristem• Lengthens roots & stems
Secondary Growth• Occurs in lateral meristems• Adds to the width of roots and stems
Leaves• Leaves collect sunlight for
photosynthesis• The top of a leaf contains most of the
chloroplasts & is where most photosynthesis takes place
Leaves–Gases are exchanged through openings
called stomata, which are opened & closed by surrounding cells called guard cells
sepal
FlowersFlowers contain sepals and petals, which are
often brightly colored to attract animal pollinators
• A stamen is the male structure of the flower.
– anther produces pollen grains – filament supports the anther
stamen
filament anther
pistil style
stigma
ovary
• The innermost layer of a flower is the female pistil.
– stigma is sticky tip – style is tube leading from stigma to ovary – ovary produces egg cells