Test 4 study Guide Flashcards
Why is mustard found in the artic so small?
to avoid the wind chill
What is special about the willow tree that grows in the artic?
it’s trunk is horizontal to avoid wind-singificant source of food for musk ox
The artic poppy employs __________ to maximize all possible light while making seeds.
heliotropism
What is so special about the snowbell?
it lives in the alps, and flowers at the end of fall. In spring when the snow melts, the snowbell is already flowering
Cushion plants in Tasmania employ this strategy because?
The cushion shape almost acts as a solar panel for absorbing light and heat.
One cushion could be made from various species of plants
What species make up the cushion plants?
sedges, rushes, daises, dandelions
What are the cushion plants refered too by farmers?
vegetable sheep
The giant Lobelia, growing on mount kenya does what for warmth?
grows hair over leaves
What are the cabbage grondsels strategy for warmth and to survive the drought season?
dead leaves form a coating over newly formed ones, and when the rainy season comes, the new leaves will sprout out of the capsule formed by the dead leaves.
At night for warm, the cabbage groundsel folds/ closes its large leaves around its small stem for warmth
The Quiver stree has a unique way of combating water loss. What is it?
It employs a strategy called ‘self amputation’ where it will seal off an area (amputate) of water loss is occuring in that area.
Also the bark is covered in a think white coating
What is the white surface of the cone plant?
skin of last years leaves
The Arizona Saguaro cactus can hold?
several tons of water
What are the ‘pebbles’ of the window plant?
The little stumps resembling pebbles are actually the tops of the underground leaves that transport the light to the underground photosynthetic elements
Mole rats aid in dispersal by?
collecting bulbs and storing them underground, as the mole rats burrow outwards, some of the bulbs are forgotten and able to germinate
What plant species lives on Mount Rormima (the wettest place on earth)?
Pitcher plants
The center of a bromeliad contains what?
a pool that is normally a safe haven for insects
A badderwort ‘hunts’ where? And how?
in the bromeliad pools, and sets traps by inflating bladders with water. On the top of each bladder is a bristled door that sweeps bug larvae in
Sundews are what kind of plant?
insectivorous
The giant amazon water lily has a special mechanism to avoid cross pollination. What is it?
the flower closes after the first night
What do lily trotter birds do?
they walk on top of the giant amazon water lilies pads and hunt insects trapped there
What are the purpose of the cypress cones?
to slow down current to allow mud to fall out of solution, letting the mud deposit and give them more space to grow
What is special about the mangrove seed?
It isn’t released until after germination, where the hope is that it will fall and ‘shoot’ into the mud where it can continue to grow
What are the ‘trees’ of the ocean and can grow to over 300 ft?
Kelp
What is special about single celled algae?
The single celled algae fills our atmosphere with more 02 than all land plants combined
How did cultivation of plants begin by humans?
Probably began by accident, from seeds that were spilled, carried from birds, or animal waste
Mostly wild cereals
Domestication is what?
selection of specific characteristics and cultivation by humans
What are the cereal grains?
barley, wheat, rice and corn
What are some of the elements of selection?
loss of natural seed dispersal (AKA seeds stick to pod) More and Larger grains Thicker stalks Seeds that seperate freely Improved flavor and texture
The “tools” of agriculture predate what?
Cultivation
When was the sickle blade invented?
12,000 years ago
When was the grindstone invented?
23,000 years ago
What was found on some of the grindstones found?
starch containing characteristics of wild barley
The first plants were brought into cultivation 10,000 years ago?
The Fertile cresent
What were the plants that were brought into cultivation in the Fertile Cresent
Wild Barley, Wheat, Lentels, and Pease
What modern day countries are in the fertile cresent?
Iran, Turkey, Iraq, Syria, Lebanon, Jordan and Isreal
What were some of the other crops that were harvested in the fertile cresent?
peas, olives, pomegrantes, grapes, figs and flax
What were the first animals to be domesticated?
Dogs, domesticated about 15,000 years ago
When were cats domesticated?
5000 years ago in North Africa and Near East
What were the animals that were domesticated following dogs and cats??
Goats, sheep, cattle, and pigs
Why were goats, sheep, cattle and pigs domesticated?
For wool, hides, milk, cheese, and eggs
How did grazing animals affect the land?
The grazing animals ate the available plant life, and lead of cultivation of plants for fodder
China, in the yellow river area, what plants were cultivated
Rice and millet (8,000 years ago)
Soybeans (3,100 years ago)
What plants did Tropical Asia begin to cultivate?
mango, citrus, taro, bananas
Why was taro important?
Grown for starchy corn
When were bananas brought to America? What was different about them
After cultivation/domestication bananas lost their seeds, and these seedless bananas where brought to the new world shortly after Columbus
What animals had long since been domesticated in Tropical Asia?
Buffalo, camels, and chickens
What crops began to be cultivated 4-5,000 years ago in Africa?
sorghum, grain, okra, yams, cotton
What does the boll weevil do?
It is a beetle that feeds on cotton
No ____________ ___________ were brought from olf world to new world prior to 1492
domesticated plants
Where was the Bottle Gourd brought from 8,000 years ago to the new world?
Africa/Asia
What were the first plants cultivated in the New World?
pumkins and squash in place of grains, wheat, barely
Instead of rice, what was farmed in the New world?
Maize (corn)
Why is New world cotton prefered over old world cotton?
New world cotton is polyploidy and the old world cotton is diploid
In south America, what crops were cultivated?
tuberous crops like potatoes and seed crops such as quinoa
What were the few animals domesticated in the New World?
Musovy Duck, Turkey, Guinea Pig, Llamas, and Alpaca
Where is black pepper from?
ground fruits of Piper nigrum
Where is cinnamon from?
ground bark of the Cinnamomum
Where are cloves from?
dried flower buds of Eugenia
Where is Ginger from?
rhizome (stem) of Zingiber
Where are nutmeg and mace from?
the seeds and dried outer seed covering of Myristica
Where is vanilla from?
dried, fermented seed pod of orchid Vanillia
Where is Allspice from?
dried, unripe berries of Pimenta
What herbs are members of the mint (Lamiaceae) family?
Thyme, Mint, Basil, Oregano, Sage
What herbs are members of the Parsely (Apiaceae) family?
Parsely, Dill, Caraway, Fennel, Coriander, Anise
What herb is from the same genus as wormwood and sagebrush?
Tarragon
Bay leaves are from what family?
laurel family
What spice consists of the dried stigmas and styles of Crocus sativa and is in the iris family? It also is very expensive because it must be collected by hand
Saffron
What is coffee made of?
The dried seeds of the Coffea Arabica and the seeds are roasted and ground to make coffee
How is tea made>
From the dired leaves of the tea plant
Global Evolution-
Crops are carried from their point of origin to?
Where they are grown best throughout the world
Global Evolution-
Corn, wheat and rice are grown?
Wherever possible
Global Evolution-
Some plants are more closely related with their new homes than their points of origin. What is an example of this?
Potatoes. Originally cultivated by Incans they are now more closely related to the Irish
Global Evolution- Oil palms (source of Palm oil and native to West Africa), Coca (source of cocoa and chocolate native to Mexico) and sugarcane (New Guinea) are now?
Grown everywhere
What are the 6 Major crops throughout the world?
Wheat, Rice, Potatoes, Maize, Sweet Potatoes, and Manioc
80% of total calories consumed by humans
What are the other 8 supplementary crops throughout the world?
Sugar cane, Sugar beet, Common beans, Soybeans, Barley, sorghum, coconuts and bananas
The jump from the human population from 100 million to 300 million was a direct result of?
Agriculture
Urban centers were established when the human population was 5 million how long ago?
8,000 BC about 10,000 years ago
In the 20th century, the human population has increased from?
1.6 Billion to 6 billion
How many people are added to the world everyday?
220,000
How many people are added to the world per year?
83 million people added per year
By 2050 the world will need ___% more food to feed the population
70-100%
The two biggest development in crop populations came from?
Haberbosh’s discoveries of how to make fertilizer
Hybrid maize seed
What are the major problems in agriculture?
Utilizing the gains in productivity made possible by mechaization, irrigation and fertilization