|the continuous sequence of changes undergone by an organism from one primary form, as a gamete, to the development of the same form again|
|a theory that evolution of a species is due to a predetermined series of alterations intrinsic to the species, not due to natural selection|
|1.||a reproductive body, produced by bacteria, fungi, various plants, and some protozoans, that develops into a new individual. A sexual spore is formed after the fusion of gametes and an asexual spore is the result of asexual reproduction|
|2.||a germ cell, seed, dormant bacterium, or similar body|
|3.||(intr) to produce, carry, or release spores|
|[C19: from New Latin spora, from Greek: a sowing; related to Greek speirein to sow]|
A small, usually single-celled asexual or sexual reproductive body that is highly resistant to desiccation and heat and is capable of growing into a new organism, produced especially by certain bacteria, fungi, algae, and nonflowering plants.
A dormant, nonreproductive body formed by certain bacteria in response to adverse environmental conditions.
|spore (spôr) Pronunciation Key
A reproductive cell or group of cells, produced by some plants, that is capable of developing into an adult plant without combining with another reproductive cell. Plants also produce sperm cells. The spores of nonflowering plants are analogous to the seeds of flowering plants. (See asexual reproduction; compare sexual reproduction.) Fungi and algae typically reproduce by means of spores that are carried by the wind or some other agency to a new location for growth.