LAB 11 Flashcards
Why are spring ephemeral adaptions necessary
-By being early and quick they are able to take advantage of the narrow window between snow melt and the re-leafing overstory
What are 3 ways that plants without chlorophyll obtain energy without photosynthesis
- Obtaining nutrients through association with the fungi family Russulaceae
- Obtaining nutrients by growing only on the roots of beeches
- Carnivorous plants
What adaptive feature allows repeated consumption of grasses by herbivores (or mowing) without resulting in the death of the plant?
-They grow from the base of the blade and not by the elongating tip
What is the most economically important angiosperm family
Poaceae (grasses)
Name 3 ways that angiosperms can avoid self-pollination
- Sequential maturation of male and female structures
- Self-incompatibility
- Physical separation of anthers and stigma
List 5 adaptive features that attract or accommodate pollinators
- flower color
- flower odor
- they provide landing spots
- accommodation for long mouth parts
- they offer rewards (pollen, oil, nectar)
List 4 mechanisms used by angiosperms to disperse their seed
- wind
- water
- attach seeds externally to organism
- cover seeds with nutrients that’ll be consumed and pooped out
Name 3 adaptations common to plants that exhibit invasive tendencies that result in competitive advantages for those plants
- Grow and reproduce rapidly
- Compete aggressively for resources
- they can tolerate a variety of habitat conditions
anther
the part of a stamen bearing the pollen, usually consisting of two pollen-sacs
Bract
a modified leaf, especially one associated with a reproductive structure, often mistaken for a petal
Calyx
all the sepals of a flower, collectively
Carpel
the “fertile leaf” which bears the ovule(s); is some cases, equivalent to pistil
Corolla
all the petals of a flower, collectively
Ovary
the expanded, basal part of a pistil containing the ovule
Inferior ovary
other floral parts are attached at the top of the ovary
Superior ovary
other floral parts are attached at the bottom of the ovary
Petal
one of the inner set of floral “leaves”; often colorful; collectively called the corolla
Perianth
all of the sepals and petals of a flower
Pistil
the female organ of the flower, composed of one or more carpels
Receptacle
the basal part of the flower, representing the tip of a stem to which the other flower parts are attached
Sepal
one of the outermost set of floral leaves; collectively called the calyx
Stamen
the male organ of a flower, consisting of an anther and usually a filament
Stigma
the part of the pistil that is receptive to pollen
Style
the slender stalk that typically connects the stigma to the ovary
