Ecology notes Flashcards
(27 cards)
Do predators or prey have greater mass?
Prey, because ecosystems need more prey to support fewer predators through the food chain.
3 types of symbiosis?
Parasitism, commensalism, mutualism
Example of parasitism?
Tick on a dog, tapeworm in a human
Example of commensalism?
Barnacles on a whale, birds nesting in trees
Example of mutualism?
Bees and flowers, clownfish and sea anenames
2 root functions?
Absorb water and minerals, provides structural support
Stomates?
Guard cells, opening and closing
Thigmotrophism?
Tendrils on climbing plants, limited growth response wind.
Ex. Bristlecone pine
Function of Auxin?
Stimulates cell elongation.
Where is Auxin produced?
embryo of seeds
Function of cytokinin?
stimulates cell division
Where is cytokinin produced?
synthesized in roots transported to other organs
Function of Ethylene?
stimulates fruit ripening
Where is Ethylene?
tissues of ripening fruits
Function of abscisic acid?
stimulates stomatal closure
Where is abscisic acid produced?
leaves, stems, green fruit
Function of Gibberllin?
stimulates shoot elongation
Where is Gibberllin produced?
embryo
1 cause of species loss in the world?
Loss of habitat
Savanna biome?
scattered grasses, trees, frequent fires
desert biome?
hot, dry, succulants
Chaperrel biome?
dense shiny shrubs with evergreen leaves, mild rainy winter, hot dry summers, fire adapted
Grassland biome?
mostly treeless, cold winters, agricultural areas
temperate deciduous forests biome?
evenly distributed rainful
