spore

Spores are the seed-like cells that help some kinds of plants and bacteria to reproduce. Ferns and mosses reproduce using spores.

Many plants reproduce by means of flowers, which make seeds. Most plants that don't produce seeds use spores to spread themselves around. Spores are microscopic, and plants like mosses and ferns make huge quantities of spores, which are blown around by the wind so they can grow in new places. Spore comes from the Greek spora, "seed-time" or "a sowing."

Definitions of spore
1

n a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion

“a sexual spore is formed after the fusion of gametes”
Types:
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basidiospore
a sexually produced fungal spore borne on a basidium
endospore
a small asexual spore that develops inside the cell of some bacteria and algae
carpospore
a nonmotile spore of red algae
chlamydospore
thick-walled asexual resting spore of certain fungi and algae
conidiospore, conidium
an asexually produced fungal spore formed on a conidiophore
oospore
a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi
resting spore
a spore of certain algae or fungi that lies dormant; may germinate after a prolonged period
tetraspore
one of the four asexual spores produced within a sporangium
zoospore
an asexual spore of some algae and fungi that moves by means of flagella
fern seed
the asexual spore of ferns that resembles dust; once thought to be seeds and to make the possessor invisible
pollen
the fine spores that contain male gametes and that are borne by an anther in a flowering plant
microspore
smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte
macrospore, megaspore
larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte
aeciospore
spore of a rust fungus formed in an aecium
ascospore
sexually produced fungal spore formed within an ascus
zygospore
a plant spore formed by two similar sexual cells
teliospore
a chlamydospore that develops in the last stage of the life cycle of the rust fungus
pollinium
a coherent mass of pollen grains (as in orchids)
ragweed pollen
pollen of the ragweed plant is a common allergen
Type of:
agamete
an asexual reproductive cell

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