{"id":2106,"date":"2019-10-17T22:59:12","date_gmt":"2019-10-17T20:59:12","guid":{"rendered":"http:\/\/evoluscience.fr\/?page_id=2106"},"modified":"2026-04-19T21:46:04","modified_gmt":"2026-04-19T19:46:04","slug":"conclusion","status":"publish","type":"page","link":"https:\/\/www.evoluscience.fr\/index.php\/cycle-4\/troisieme-2\/3e-le-vivant\/chapitre-1-les-facteurs-externes-impliques-dans-levolution-dune-population\/activite-1\/conclusion\/","title":{"rendered":"Conclusion"},"content":{"rendered":"\n<div id=\"wp-block-themeisle-blocks-advanced-columns-cd1b4779\" class=\"wp-block-themeisle-blocks-advanced-columns has-1-columns has-desktop-equal-layout has-tablet-equal-layout has-mobile-equal-layout has-vertical-unset\"><div class=\"wp-block-themeisle-blocks-advanced-columns-overlay\"><\/div><div class=\"innerblocks-wrap\">\n<div id=\"wp-block-themeisle-blocks-advanced-column-23ffd0ef\" class=\"wp-block-themeisle-blocks-advanced-column\">\n<p class=\"has-drop-cap has-vivid-red-color has-text-color wp-block-paragraph\">La reproduction asexu\u00e9e est indispensable lorsque la\nreproduction sexu\u00e9e n\u2019est pas possible. La multiplication v\u00e9g\u00e9tative permet une\nacc\u00e9l\u00e9ration de la reproduction en \u00e9vitant les stades fragiles et ainsi la\nconqu\u00eate rapide d\u2019un nouveau milieu. Les caract\u00e8res avantageux sont maintenus.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color wp-block-paragraph\">N\u00e9anmoins, comme les individus obtenus sont identiques \u00e0\nl&rsquo;individu de d\u00e9part, en cas de maladie, tous les individus disparaissent.\nSeule une reproduction sexu\u00e9e permet une variabilit\u00e9 g\u00e9n\u00e9tique.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color wp-block-paragraph\">La\nscience expliquant la variation au cours du temps du nombre d\u2019individus dans une\npopulation au niveau d\u2019une niche \u00e9cologique est la dynamique des populations.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color wp-block-paragraph\">Une <em><strong>niche \u00e9cologique<\/strong><\/em> est une place (lieu et r\u00f4le) occup\u00e9e par\nune esp\u00e8ce dans un \u00e9cosyst\u00e8me.<\/p>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color wp-block-paragraph\">Un\n<strong>\u00e9cosyst\u00e8me<\/strong> est un ensemble vivant\nform\u00e9 par un groupement de diff\u00e9rentes esp\u00e8ces en inter-relations (nutrition,\nreproduction, pr\u00e9dation\u2026), entre elles et avec leur environnement&nbsp; (air, eau\u2026) en un lieu donn\u00e9.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-very-dark-gray-color has-text-color wp-block-paragraph\"><strong>Il existe trois niveaux de biodiversit\u00e9&nbsp;:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>La biodiversit\u00e9 des \u00e9cosyst\u00e8mes<\/strong><\/li>\n\n\n\n<li><strong>La biodiversit\u00e9 des esp\u00e8ces<\/strong><\/li>\n\n\n\n<li><strong>La biodiversit\u00e9 des all\u00e8les<\/strong><\/li>\n<\/ul>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Exemple&nbsp;: Des moules et de la mousse\nsur un rocher.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>La moule et la mousse sont deux esp\u00e8ces.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Le rocher en tant que lieu est un habitat\n(coordonn\u00e9es GPS)<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Les moules et la mousse n\u2019ont pas le m\u00eame\nmode de vie (nutrition, respiration\u2026). Ils appartiennent donc \u00e0 deux niches\n\u00e9cologiques diff\u00e9rentes.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>L\u2019ensemble \u00ab&nbsp;rocher&nbsp;\u00bb contient\nd\u2019autres esp\u00e8ces\u2026 et est un \u00e9cosyst\u00e8me.<\/em><\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Chanson : Boutures et bulbes<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"360\" height=\"360\" src=\"https:\/\/www.evoluscience.fr\/wp-content\/uploads\/2026\/04\/Boutures-Et-Bulbes-mp3-image.jpg\" alt=\"\" class=\"wp-image-13895\" style=\"width:562px;height:auto\" srcset=\"https:\/\/www.evoluscience.fr\/wp-content\/uploads\/2026\/04\/Boutures-Et-Bulbes-mp3-image.jpg 360w, https:\/\/www.evoluscience.fr\/wp-content\/uploads\/2026\/04\/Boutures-Et-Bulbes-mp3-image-300x300.jpg 300w, https:\/\/www.evoluscience.fr\/wp-content\/uploads\/2026\/04\/Boutures-Et-Bulbes-mp3-image-150x150.jpg 150w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/figure>\n<\/div>\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/www.evoluscience.fr\/wp-content\/uploads\/2026\/04\/Boutures-Et-Bulbes.mp3\"><\/audio><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":2102,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"class_list":["post-2106","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/pages\/2106","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/comments?post=2106"}],"version-history":[{"count":0,"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/pages\/2106\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/pages\/2102"}],"wp:attachment":[{"href":"https:\/\/www.evoluscience.fr\/index.php\/wp-json\/wp\/v2\/media?parent=2106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}