exodermis
noun[S]
biologyspecializeduk/ˌek.səˈdɜː.mɪs/us/ˌek.səˈdɝː.mɪs/alayerofcellsin a plant'srootunderneaththeepidermis(=outerlayer):
(植物根部的)外皮层The exodermis isthoughttoprotectagainstwaterlossfrom therootto thesoil.人们认为,外皮可以防止水分从根部流失到土壤中。
- Thecellsof the exodermis are verycompact,restrictingtheflowofwater.
- The exodermis is a single-celllayerat theoutersurfaceof therootdirectlybelow therootepidermis.
- The exodermis of a one-year-oldrootis oftenflakingandfallingoff.
Parts of plants
- bilobed
- blade
- bough
- bulb
- calyx
- caning
- cascara sagrada
- endodermis
- needle
- outgrowth
- plumule
- rhizome
- simple leaf
- spine
- trunk
- variegated
- variegation
- vascular
- veined
- vesicle