Flashcards in biology exam 2 Deck (44):
Male part that creates sperm
What is the stigma's purpose?
To catch pollen
What is the another's purpose?
To expel pollen
Example if fast cloning asexual plant
What flowe attracts flies?
What does a staminate flower lack?
What dies a pistillate flowe lack?
What is a monoecious plant?
A plant that has both make and female parts, but they are separated. Corn is example
What is dioecious?
A plant that is only male or female.
What does a perfect flower have?
All flower parts
What us a zygote?
The combination if the male and female gametes
What dies the second spark in angiosperms do?
Fuses with other tells in the ovule to firm endosperm
What are the 4 mechanisms if seed dormancy?
Mechanical - scarification
Light - photo chrome
Temperature - stratification
Chemicals - leaching
What was dr deno's hobby?
Figuring out why seeds germinate
What are the 5 main plant hormones?
What dies auxin do?
Tropic response and apical dominance.
What else can auxin do?
Cell expansion and fruit development
What plant part is most sensitive to auxin
What do cytokinins do?
First found in herring Sperm and coconut milk
Suppressed root growth
Regulates cell cycle
What are the three functions if ethylene
What types if plant dies ethylene have a positive effect and one negative?
It has a positive affect on aquatic plant growth and negative in others
What are the 4 functions of abscissic acid?
Stomata I closure
What is a gibberellin and what's it's purpose?
A hormone that allows seed germination and can promote stem elongation
In what three ways do plants control hormones?
Control if cell division
Cytokinins and gibberellins
Auxin and giberelliv acid
Buttercup herbaceous plants
Purpose of phosphorus
ATP and stimulating root growth
Where is phosphorus
What is high p?
A root system that branches out?
What is low p?
Long dense root hairs
Symbiotic root fungi relationship
Where is potasium?
Soil solution salts
Do monocots or dicots suck up nitrogen?
What is the only monocot with nitrogen fixation?
Red and far relight
Cryptochrome and phototropin
What is the active form if red light?
What is crypto chrome responsible for?
Leaf expansion and movements
Phototropism and phototropin
Directional growth response to light