spore - a small usually single-celled reproductive body produced by many plants and some protozoans and that develops into a new individual; "a sexual spore is formed after the fusion of gametes"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 chlamydospore - thick-walled asexual resting spore of certain fungi and algae oospore - a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi 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 |