Midterm 1 Flashcards
Homo habilis
the first humanoid species appeared 2.8 mya
hold old are homo sapiens?
250 000 ya
describe 3 uses of plants in foraging societies
- edible plants
- poisonous plants for hunting
- medicinal plants
- hallucinogenic plants
- plants for fibres and dyes
- construction materials
the diet of kung bushmen consisted of?
- 2/3 plant based
- 2,355 Kcal/day rich in proteins, minerals and vitamins
what is contemporary forest gardening ?
uses cultivated plants
people in foraging societies were ____________
animists
animisn comes from what?
primeval and universal belief that souls/ spirits inhabit ordinary plants, animals and things governing their existence
what do forgaging societies who practice animism believe?
- the human being is equal to animals, plants and natural forces
- the human being is a part of the nature and not something distinct or above it
- all nature forms must be treated with respect and be on the good side of the spirits through rituals
what is the shaman?
the repository of knowledge that allows him/her to act as an intermediate between the visable world and an invisible spirit world, he/she practices sorcery for purposes of healing, divination and control over natural events
shamanistic traditions have existed since __________ times
prehistoric
axis mundi
world axis
what is the belief of the shaman with the worlds axis?
they can traverse the link between the physical and spiritual world, commune the spirits for assistance in healing, weather control and future telling
what is the mother of corn?
mexico
the ritual of feeding grains to plants is practiced in __________ region of ________
malnad Karnataka
what are spirit houses?
minature homes that stand outside mainly thai budhist homes. it is hoped that spirits will live in the houses instead of homes of people
artificial selection
human intervention in plant or animal reproduction to ensure that certain desirable traits are present
similarly to natural selection artifical selection has lead to _________
evolution
how is artificial selection different from natural selection?
artificial selection deals with cultivated plants and animals
artificial selection can be used for what 3 different ways?
- increasing divercity of harvested organs
- increasing size of harvested organ
- shape and taste of harvested organ
- increasing size of flowers and number of petals
what is a cultivar?
a plant race that has been selected intentionally and maintained through cultivation
do cultivars exist in nature?
no
artificial selection also includes parts of plants not interest of men including?
biological traits like resistance to disisease and other ecological factors
reduced genetic divercity increases susceptibility to _________ and ____________
pests and disease
what are germplasm collections?
- native or indigenous varieties of cultivated crop plants used elsewhere in commercial production
- identification and collection of wild relatives of the more commonly cultivated plants