Card Set Information
What determines the porosity of wood tissue?
species-specific arrangement of tracheids and vessels
porosity influences its density, permeability and acoustical properties
Describe the porosity of angiosperms and softwoods
Angiosperms: contains tracheids and vessels in diffuse porous, ring porous or semi-ring porous arrangements
softwoods: contain only tracheids
What characteristics of wood would influence its utility?
wood density (related to porosity)
flexibility and strength
resistance to rot
What kind of musical instruments can be made from plant material?
percussion (drums, rattles)
wind (flute, didgeridoo)
What are some traditional ways of cooking?
3 stone open fires
open fire roasting spit
improved wood and charcoal stoves
solar cooking (many disadvantages)
advanced technology cook stoves (used molten salt from solar energy)
What kind of material would be good for raft-making?
Baboo, because it is water resistance and buoyant, and it contains diaphragms
to make a ships haul
the wood is very dense
What plants are of huge economic important to Hawaii?
sugar cane and sweet banana
both are ancient introductions
What kind of plants did the Polynesians carry to New Zealand and Hawaii?
What is the most well-known watercraft used by native americans?
from different kind of birch trees, white birch was the best kind to use.
Who did NOT use a bow and arrow?
the aborigine and mari of Australia and New Zealand, they relied on spears and boomerangs.
What would affect the bows speed?
characteristics of the wood (influences weight, draweight and lifespan), length, width and shape of the bow
What are some tools of combat?
bow and arrow
plant based poisons (eg water hemlock, false hellebore, curare which was mixed with frog poison and the stems and roots of the plant)
armour and war masks (made from seaheart seeds)
knowledge or power gained through transcendent experience
belief in a power greater than oneself and that there is some higher purpose and meaning to life beyond the physical
a system of attitudes, beleifs, and practices, concerning the cause, nature, and purpose of the universe, especially as considered the creation of a supernatural agency
Why are plants connected to systems of beleifs and rituals?
planting and harvest rituals
What is considered one of the first acts of faith
What are the different kinds of secondary metabolites?
phenolics- lignin, suberin.... favenoids ]
nitrogen containing - alkaloids