Key Terms: Archaeplastida Flashcards
(29 cards)
plankton
diverse group of mostly microscopic organisms that drift in marine and freshwater systems and serve as a food source for larger aquatic organisms
plastid
one of a group of related organelles in plant cells that are involved in the storage of starches, fats, proteins, and pigments
Polypodiopsida (ferns)
seedless vascular plant that produces large fronds; the most advanced group of seedless vascular plants
heterosporous
produces two types of spores
homosporous
produces one type of spore
lignin
complex polymer impermeable to water
Bryophyta (mosses)
group of bryophytes in which a primitive conductive system appears
non-vascular plant
plant that lacks vascular tissue, which is formed of specialized cells for the transport of water and nutrients
phloem
tissue responsible for transport of sugars, proteins, and other solutes
rhizoids
thin filaments that anchor mosses to the substrate
vascular plant
plant containing a network of cells that conducts water and solutes through the organism
xylem
tissue responsible for long-distance transport of water and nutrients
phycoerythrin
a pigment that exists in red algae, absorbs blue and green wavelengths and reflects red wavelengths
ecosystem service
benefits that humans derive, directly or indirectly, from ecosystem functions
cuticle
watertight sealant that prevents water loss
stoma
pores that can open and close and control gas exchange
flavonoids
UV absorbing compounds that prevent DNA damage
apical meristems
undifferentiated cells that proliferate throughout life
sporophyte
multicellular and diploid, produce spores by meiosis
gametophyte
multicellular and haploid, produce gametes by mitosis
tracheids
secondary cell walls supported by complex polymer lignin, a type of vascular tissue
vessel elements
another type of vascular tissue that is wider, with gaps for more efficient water movement
fronds
large leaves, coiled into fiddleheads with they are young
sori
clusters on the underside of leaves
