Exam 2 Review Flashcards
What are Rose Thorns?
Truly prickles, extension of shoot epidermis
True thorns are
Modified shoots, so only at the nodes
Aggregate fruit
fruit formed from several carpels on the same flower (raspberry, strawberry)
hypanthium
cup-shaped flower formed by petals and stamens
What genus coevolved with the greya moth?
Lithophragma, in saxifragaceae
Name the modes of seed dispersal
Local, Wind, Water, and Animal
Wing Adaptation for wind dispersal
Samaras
Catkin
a dense inflorescence of unisexual apetalous flowers
serrate leaves
saw toothed
schizoid samara
two samaras joined
Follicle
One carpel, one seam
Capsule
multiple fused carpels
Asexual Reproduction Downsides
No long-distance dispersal, no genetic mixing/diversity
Bulbils
specialized asexual dispersal units (often formed from from flower buds)
Apomixis
production of 100% clonal seeds
Protandry
“male first” strategy where pollen is released before stigma is receptive to avoid self-pollination
Indeterminate inflorescence
Youngest flower is in the center/top
Determinate Inflorescence
Oldest flower is in the center/top
glucosinolates
sulfur-containing anti-herbivore
compounds activated by chewing or other tissue disruption (Brassicaceae)
mycorrizal fungi
For phosphorous (common)
Symbiotic Bacteria
Nitrogen, specialized
