Spore
Videos
In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of
Fresh snow partially covers rough-stalked feather-moss (Brachythecium rutabulum), growing on a thinned hybrid black poplar (Populus x canadensis). The last stage of the moss lifecycle is shown, where the sporophytes are visible before dispersion of their spores: the calyptra (1) is still attached to the capsule (3). The tops of the gametophytes (2) can be discerned as well. Inset shows the surrounding, black poplars growing on sandy loam on the bank of a
Sporangium of Fungi
Zygospores on Rhizopus
Aecia on foliage
Unicellular organism
Videos
A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Organisms fall into two
Valonia ventricosa, a species of alga with a diameter that ranges typically from 1 to 4 centimetres (0.4 to 1.6 in), is among the largest unicellular species
Modern stromatolites in Shark Bay, Western Australia. It can take a century for a stromatolite to grow 5 cm.
Bacteria in a capsule
A bottom-dwelling community found deep in the European Arctic.