Botany Roots

roots are 1 of 3 vegetative organs that may comprise over 50% of plant
Common functions of roots
- anchorage
- absorption of water and minerals
- conduction
- storage of nutrients and water
- survival during harsh conditions
Taproot system

main root develops from embryonic root
Fibrous root system

no main root
Adventitious roots
- produced from stems or leaves, not the embryonic root.
- above ground
Top to bottom root
- maturation
- elongation
- cell division
- root cap
Cortex
- between epidermis and vascular cylinder
- loosely packed parenchyma
- storage site
Vascular Cylinder
- center of root
- transport to and from stem
Branch roots originate in the pericycle and grow out through the cortex
Root nodules
- nitrogen fixed bacteria
- take nitrogen and provide to plant in exchange for carbs
Mycorrhizal fungi

inside cortex, provide water and soil minerals to plants in exchange or carbs

Author

jo73

315815

Card Set

Botany Roots

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Updated

2016-02-12T02:36:43Z

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