Anatomy of Seed Plants Flashcards
define radicle
an immature root
define plumule
2 miniature leaves
define micropyle
a protective outer seed coat that has a microscopic hole where it was attached to the mother plant
define node
the part of the stem of a plant from which a leaf, branch, or aerial root grows
define scale scar
marks where a leaf was once attached
define bud scale scar
a characteristic marking left on a stem when a bud falls off
which type of plant roots usually do not regenerate a new plant when the existing one is cut down?
fibrous roots
What are stems and shoots systems called in trees?
trunks and branches
define lenticel
small openings on bark
define actinomorphic
flowers that can be cut into equal halves along any diameter. These flowers are usually symmetrical
Ex: rose or tulip
define zygomorphic
a flower that is only a mirrored image of itself when cut along one plane
Ex: pea flower or three leaved clover
define receptacle
swollen base of a flower bud that is attached to the stem
define sepal
a single member of structures called calyx
define stamen
male reproductive structure made up of 2 parts
- filament
- anther
define anther
oval tip that produces pollen grains
define filament
think stalk
define pistil
reproductive structure made up of 3 parts
- stigma
- style
- ovary
define stigma
sticky tip where pollen will adhere during pollination
define style
where tube cell grows to reach the ovary
define ovary
where fertilization occurs after the pollen sperm nuclei has traveled down the style
along what part of the vein does the phloem carry sap?
along the bottom of the vein
the age of a stem can be tracked by…
counting the bud scale scars
define vascular bundle scars
tiny depressions where the vascular tissue was once connected between leaf and branch
define calyx
leaf like structures at the base of flower petals; was once the outer covering of the bud
define petal
serve to attract pollinators
found above the calyx
