nonvascular
Without internal tubes
Nonvascular describes organisms or tissues lacking a vascular system—the network of vessels that transports fluids.
In botany, nonvascular plants like mosses and liverworts have no specialized tissue for moving water and nutrients, limiting their size and confining them to moist environments.
In medicine, nonvascular tissue lacks blood vessels: nonvascular cartilage, nonvascular cornea.
Spore-bearing ground cover
- liverwortPrimitive spore-bearing plant
- hornwortSpore plant with projections
- gametophyteHaploid reproductive generation
- thallusUndifferentiated vegetative body
sporangia · sphagnum · peat · desiccation · spore · cuticle · hummock · bog
Saltwater aquatic plants
- kelpLarge brown marine algae
- phytoplanktonPhotosynthetic aquatic drifters
- diatomsSingle-celled silica algae
- chlorophyllLight-harvesting plant pigment
photosynthesis · sargassum · chlorella · spirulina · nori · dulse · eutrophication · thallus
In earliest form
- simpleFree of complexity
- spore-bearingProducing reproductive cells
- rootlessHaving no stable foundation
- leaflessHaving no foliage
stemless · avascular · shade-tolerant · pioneer · colonizer · terrestrial · aquatic
Shape-shifting single-celled organism
- parameciumCiliated slipper-shaped protozoan
- euglenaPlant-animal hybrid microbe
- protozoaSingle-celled eukaryotic organisms
- bacteriaNucleus-free single-celled organisms
archaea · unicellular · prokaryotes · eukaryotes · plankton · microbiota · protists · flagellates
moss
Spore-bearing ground cover
- liverwortPrimitive spore-bearing plant
- hornwortSpore plant with projections
- gametophyteHaploid reproductive generation
thallus · sporangia · sphagnum · peat · desiccation · spore · cuticle · hummock · bog
seaweed
Saltwater aquatic plants
- kelpLarge brown marine algae
- phytoplanktonPhotosynthetic aquatic drifters
- diatomsSingle-celled silica algae
chlorophyll · photosynthesis · sargassum · chlorella · spirulina · nori · dulse · eutrophication · thallus · aquatic
primitive
In earliest form
- simpleFree of complexity
- spore-bearingProducing reproductive cells
- rootlessHaving no stable foundation
leafless · stemless · avascular · shade-tolerant · pioneer · colonizer · terrestrial · aquatic
amoeba
Shape-shifting single-celled organism
- parameciumCiliated slipper-shaped protozoan
- euglenaPlant-animal hybrid microbe
- protozoaSingle-celled eukaryotic organisms
bacteria · archaea · unicellular · prokaryotes · eukaryotes · plankton · microbiota · protists · flagellates
nonvascularvascular
Of blood vessels
fern · tree · flowering plant · angiosperm · gymnosperm
vessel, vascular, vasculature, vascularity, vascularization, vascularize