### plant part | root:

Tuberous root
* are actually roots that are specialized to store nutrients.
* grow just below the surface and new ones grow from the old stems.
* is the major storage organ of sweet potato.
* look like tubers, but are actually swollen, nutrient-storing root tissue.

### plant part | root:

Valerian root
* Provides a mild tranquil effect, reduces nervousness.
* contains numerous substances that act on various structures of the nervous system.
* grows in damp places throughout Europe, northern Asia, the U.S. and South America.
* is also good for combating anxiety, high blood pressure, and insomnia
  - one of the most studied plants
  - the natural basis of benzodiazapan - or valium
  - used as a decoction, infusion, fluid extract and tincture
* makes getting to sleep easier and increases deep sleep and dreaming.
* natural sedative, anti-anxiety agent and muscle relaxer.
* powerful relaxant and is often taken to help with sleep.
* remedy for mood swings, and irritability.

### plant part:

Shoot
* Most shoots arise from roots
  - contain leaves
* Most shoots develop from buds
  - lateral buds
  - into stems
* Most shoots emerge from seeds
  - surfaces
* Most shoots form buds
  - dormant buds
* Most shoots grow from fleshy rhizomes
  - underground rhizomes
* Most shoots have foliage
  - originate from roots
  - produce flowers
  - yield plants
* Some shoots become gametophytes
  - mature gametophytes
  - carry flowers
  - develop from rhizomes
  - grow buds
* Some shoots grow from kernels
  - stumps
* Some shoots produce antheridiums
  - bananas
  - stolons
  - protect flowers
  - sprout from roots
* also arise from the nodes, forming roots and new plants.
* are shooting
  - sprouts
* come up from the roots of larger trees.
* consist of stems, leaves, and flowers.
  - green foliage
* have pale foliage
* includes sections.
* originate from bases
* photosynthesize most of the carbohydrate requirement and have a high light requirement.
* turn a black color, droop over, and die.

### plant part | shoot:

Aerial shoot
* Some aerial shoots arise from buds.
* arise from a network of root-like, absorbing strands imbedded in host tissues.

Diseased shoot
* occur singly or as a cluster arising from a node on a buried runner.
* remain on the plant for sometime eventually turning grey.
* turn black, droop over, and die.

Lateral shoot
* Some lateral shoots develop from rhizomes.
* are branches that go off to the sides.

Leafy shoot
* Some leafy shoots produce antheridiums.
* require a mist bed.

New shoot
* can grow from nodes on stolons or rhizomes.
* form at the base of the plant, resulting in dense monocultures.
* grow from buds at nodes of old stems, stolons or rhizomes
  - the top of the rhizomes and grow into banana plants

### plant part | shoot:

Plant shoot
* Most plant shoots have positive phototropism.
+ Phototropism: Plant physiology
  * Phototropism is one of the many plant tropisms or movements which respond to external stimuli. Growth towards a light source is a 'positive phototropism', while growth away from light is called 'negative phototropism'. Most plant shoots have positive phototropism. Roots usually have negative phototropism, though gravitropism may play a larger role in root behavior and growth. Some vine shoot tips exhibit negative phototropism, which allows them to grow towards dark, solid objects and climb them.