Bio 130

Name some roots

Root that has 20X the sugar
licorice
good and plenty

Root that is 3rd in worlds diets
grows in poor soil
we use as tapioca pudding

First organ from seed:

* dicot common
* 1st main root
* reaches deeper H2O

* monocot common
* shallow
* dryer places for rain

* forms at part of plant that comes out at a place not expected
* like stems & petiole

3 regions of young stem

* collection of apical meristem cells
* protection
* mucigel, lubercation
* senses gravity by root cap cells

*developes from inside of young stem

What the young stem flakes off

Root Cap description

Root Tip regions and what developes there

What are root hairs used for?

* controls flow and passage
* symplastic- through cell membranes via plasmodasmada
* apoplastic- btwn cellular spaces
* casparian Strip-H2O proof

* between cellualr spaces to endodermis membrane, must be accepted

Through cells membranes plasmodasmada bridges

* only in roots
* 1st main function is lateral roots generation
* 2nd main function is vascular cambium
* 3rd main function is cork cambium creation

* divides cells btwn sylem & phloem
* pericycle divides in other spaces
* continous growth
* pushes phloem out
* cortex & epidermis lost

* division of pericycle lateral roots @ protosylem poles
pushes cells out

* biannual life cycle
* propagative
* aerial roots
* Roots above ground
* Pneumatophores

*forms adventitious buds
* buds develop into suckers

epiphytes
-above ground
-can carry out photosynthesis
-can form roots is leaves

*support structure
* prop roots ie corn
* aerial roots - baryan
* buttress roots

* breathing roots
* black mangrove
* air sacks conduct air breathing

Initmate long term relationship btwn organisms
-parasitism
-mutualism
-commonsalism

Example of parasitism:

* mycorrhizae
* fungus feeds roots
* transfers photosynthetic nutrients