Angiosperms Flashcards
Phyla Anthophyta
youngest group, most recently evolved
flowers: allow for direct pollination; allure w sugars
fruits: allow for seed distribution (any body that has seeds)
2 organ systems of angiosperms
shoots and roots
roots in angiosperms
anchorage and absorption; not all roots absorb water, only young roots
older roots grow bark; anchor
Germination
protrusion of baby roots (radicals) out of seed coat
Emergence
when root stems out of ground
Tap root systems
have primary and lateral root
primary: lengthens (main tap root that goes into ground)
lateral: widens (little ones that branch off)
Apical meristem
sight of mitosis on tips of roots and stem; Produces stems, leaves, and reproductive structures throughout the plant’s li
Root hairs
epidermal extensions of single cells
- increase surface area
-extra water and mineral absorption
Shoot organs
stems and leaves
responsible for photosynthesis (via leaves), supporting the plant structure (via stems
Terminal bud
enclose apical mitotic tip on stem; primary growth
Node
where bud and leaf are located
Bud
future branches - share anatomy with main stem
always occur right above leafs
Internode
stem area between nodes
cotyledon
the first part of an angiosperm, or flowering plant, to emerge from a seed and provide nutrients to the embryo (NOT leafs)
Leafs
primary photosynthetic structure