ROOTS!! The place where the journey begins. There are 4 jobs that roots do: 1.Anchor – The tree...
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Transcript of ROOTS!! The place where the journey begins. There are 4 jobs that roots do: 1.Anchor – The tree...
ROOTS!!
The place where the journey begins
There are 4 jobs that roots do:
1. Anchor– The tree failed
before the roots.
– Why do most trees fall when it rains?
There are 4 jobs that roots do:
• Absorb– The
main thing they absorb is water
Root structures
• Root hairs – How do you think these help with absorption?
There are 4 jobs that roots do:
• Transport– What needs
to be transported?
Root structures• Central / Vascular cylinder – xylem, phloem
and cambium• What is the job of xylem? Phloem? • Cambium makes more xylem and phloem
There are 4 jobs that roots do:
• Store
Root structures
• Cortex – main site of storage
TurnipsLook in this reading for the sad story of turnips. turnips
Jack o LanternsCheck out this link on the history of jack o lanternsjack o lanterns
Carrots and….http://www.youtube.com/watch?v=LOiKa51ll-k
Read the part under “the partridge familySusan Dey
Read about cartotenemiacarotenemia
CassavaRead the following about the good and bad of cassavacassava
Meristem• Growth regions of the plant– Found at the ends of the root and the stem– What cellular process do you think happens here?
Two types of root systems:
• Fibrous
Two types of root systems:
• Tap
4 Zones of roots
4 Growth regions of the plant
• Root cap– Protects and
produces a slime
4 Growth regions of the plant
• Zone of cell division / meristematic growth
4 Growth regions of the plant
• Zone of elongation– Cells grow but
they are unspecialized
4 Growth regions of the plant
• Zone of maturation / absorption – specialization occurs
Root structures
• Epidermis – outer covering
Specialized roots – Food storage
Specialized roots
• Water storage• Remember this plant?
Specialized roots• Propagative – roots that produce clones by
spreading out and then send up new shoots• Most cherry orchards are produced this way
Specialized roots
• Pneumatophores• Read pneumatophores :
Specialized roots
• Aerial Roots• Read the following Aerial root
Specialized roots
• Buttress roots
Buttress roots
Specialized roots
• Parasitic roots
Specialized roots
• Climbing roots
Nitrogen fixationGo to the bottom of this page to read about and understand nitrogen fixationnitrogen fixation
Legumes