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Lecture 6

Terms

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gametangia
(Plural=Gametangia) A reproductive organ that houses and protects the gametes of a plant
lignin
A chemical (biopolymer, like proteins and DNA) that hardens the cell walls of plants and makes them more difficult to penetrate by water.
vascular tissue
A system formed by xylem and phloem of a plant, serving as a transport system for water and nutrients, respectively.
hyphae
(Plural=hyphae) One of many filaments making up the body of a fungus.
meristems
Plant tissue consisting of undifferentiating cells that divide and generate new cells and tissues.
spores
In plants and algae, a haploid cell that can develop into a multicellular individual without fusing with another cell.
stomata
(Plural=stomata) A pore surrounded by guard cells in the epidermis of a leaf. When stomata are open, CO2 enters a leaf and water and O2 exit. A plant conserves water when stomata are closed.
mycorrhizae
(Plural=mycorrhizae) A mutualistic association between plant roots and fungi.
mycelium
The entire network of hyphae making up the body of a fungus.
cuticle
In plants, a waxy coating on the surface of stems and leaves that helps retain water.
lichens
A mutualistic association between a fungus and alga or cyanobacterium.
sporangia
(Plural= Sporangia). A capsule in fungi and plants in which meiosis occurs and haploid spores develop.
mycosis
The general term for a fungal infection.
heterokaryotic
A life stage of fungi in which cells have two separate haploid nuclei of different parental lineages that have not yet fused.

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