23.8 Gallery: Precambrian erahttps://peda.net/id/37f026323542020-12-03T11:23:33+02:00https://peda.net/:static/539/peda.net.logo.bg.svg<div class="license">Tämän sivun lisenssi <a rel="license" href="https://peda.net/info">Peda.net-yleislisenssi</a></div>
Cyanobacteria are photosynthetic bacteria that are often considered the predecessors of chloroplasts. What we call "blue alga" are actually cyanobacteria.https://peda.net/id/37f0b67f3542020-12-03T11:23:33+02:00<a href="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/soybjaovensoias#top" title="0-sinilevaa_2_p.jpg"><img src="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/soybjaovensoias:file/thumbnail/6ff6e7739dd07d03d0440a0d62cfc12716036ab9/0-sinilevaa_2_p.jpg" alt="" title="Cyanobacteria are photosynthetic bacteria that are often considered the predecessors of chloroplasts. What we call "blue alga" are actually cyanobacteria." class="thumbnail" loading="lazy"/></a>2020-12-03T11:23:33+02:00Stromatolites are fossilized cyanobacteria.https://peda.net/id/37f112ec3542020-12-03T11:23:33+02:00<a href="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/somsmknkvtf#top" title="evoluutio_stromatoliitti_shutterstock_88525036_peda_p.jpg"><img src="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/somsmknkvtf:file/thumbnail/beeebca5b2d9c6344b4fe8af3c902cecc2b45f14/evoluutio_stromatoliitti_shutterstock_88525036_peda_p.jpg" alt="" title="Stromatolites are fossilized cyanobacteria." class="thumbnail" loading="lazy"/></a>2020-12-03T11:23:33+02:00The development of multicellularity and sexual reproduction were important steps in the evolution of life as we know it. Sexual reproduction makes increased hereditary variation in a species possible.https://peda.net/id/37f169733542020-12-03T11:23:33+02:00<a href="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/mjslomkeslmpmmkmjs#top" title="ihminen_hedelmoitys_shutterstock_48568672_peda_p.jpg"><img src="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/mjslomkeslmpmmkmjs:file/thumbnail/7c643f9d4abc2c3a85c26b50b70fa1020c8bc480/ihminen_hedelmoitys_shutterstock_48568672_peda_p.jpg" alt="" title="The development of multicellularity and sexual reproduction were important steps in the evolution of life as we know it. Sexual reproduction makes increased hereditary variation in a species possible." class="thumbnail" loading="lazy"/></a>2020-12-03T11:23:33+02:00Multicellularity made the diversification of cells possible. The picture shows the embryo of a sea urchin.https://peda.net/id/37f1bd3e3542020-12-03T11:23:33+02:00<a href="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/mmsekma8s#top" title="evoluutio_merisiili_8_solu_sveistola_eoppi_1382_peda_p.jpg"><img src="https://peda.net/oppimateriaalit/e-oppi/verkkokauppa/yl%C3%A4koulu/lukuvuosi-20-21/englannin-kieliset/biology/e9i22/evoluutio_perusteet/keka2a/mmsekma8s:file/thumbnail/d7e7e774f39b568f4dc9fc61b095dc739d598371/evoluutio_merisiili_8_solu_sveistola_eoppi_1382_peda_p.jpg" alt="" title="Multicellularity made the diversification of cells possible. The picture shows the embryo of a sea urchin." class="thumbnail" loading="lazy"/></a>2020-12-03T11:23:33+02:00