{"id":1931,"date":"2020-07-15T14:35:51","date_gmt":"2020-07-15T14:35:51","guid":{"rendered":"https:\/\/murreeroad.org\/Biology10\/?p=1931"},"modified":"2020-07-15T14:37:26","modified_gmt":"2020-07-15T14:37:26","slug":"q-12-define-fertilization-and-explain-its-types","status":"publish","type":"post","link":"https:\/\/murreeroad.org\/Biology10\/q-12-define-fertilization-and-explain-its-types\/","title":{"rendered":"Q.12 Define fertilization and explain its types."},"content":{"rendered":"<p><strong>Q.12\u00a0Define fertilization and explain its types.<\/strong><br \/>\n<strong>Fertilization <\/strong><br \/>\n<strong>Answer:<\/strong><br \/>\nAfter the formation of gametes; fertilization occurs. There are two ineca. hanisms by which fertilization can take place:<br \/>\n<strong>(1) External fertilization:<\/strong><br \/>\n<strong>Introduction <\/strong><br \/>\nIn external fertilization, egg cells are fertilized outside the body.<br \/>\n<strong>Explanation <\/strong><br \/>\nIt occurs in aquatic environment and both the male and female animals release their gametes in. their surroundings at almost the same time. In external fertilization, there is risk of loss of gametes due to environmental hazards such as predators.<br \/>\n<strong>Examples<\/strong><br \/>\nIt occurs in many invertebrates and the first two groups of vertebrates i.e. fishes and amphibians<br \/>\n<img loading=\"lazy\" class=\"size-full wp-image-1932 aligncenter\" src=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/07\/fish.jpg\" alt=\"fish\" width=\"274\" height=\"174\" \/><br \/>\n<strong>Internal fertilization<\/strong><br \/>\n<strong>Introduction<\/strong><br \/>\nEgg cells are fertilized within the reproductive tract of fr male.<br \/>\n<strong>Explanation<\/strong><br \/>\nSuch animals provide protection to the developing embryo. After fertilization, reptiles and birds make protective shells around their egg.cells and then lay these eggs. Extra protection is provided to embryo and mother supplies all that embryo needs: An mammals, the development of fertilized egg into new body takes place within the mother&#8217;s body.<br \/>\n<strong>Examples<\/strong><br \/>\nExamples are reptiles, birds and mammals<br \/>\n<img loading=\"lazy\" class=\"size-full wp-image-1933 aligncenter\" src=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/07\/birds-and-mammals.jpg\" alt=\"birds and mammals\" width=\"230\" height=\"207\" \/><br \/>\n<a href=\"https:\/\/murreeroad.org\/Biology10\/unit-14-support-and-movement-long-questions\/\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-1462 aligncenter\" src=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/06\/back_button.png\" alt=\"\" width=\"150\" height=\"45\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Q.12\u00a0Define fertilization and explain its types. Fertilization Answer: After the formation of gametes; fertilization occurs. There are two ineca. hanisms by which fertilization can take place: (1) External fertilization: Introduction In external fertilization, egg cells are fertilized outside the body. Explanation It occurs in aquatic environment and both the male and female animals release their&hellip;&nbsp;<a href=\"https:\/\/murreeroad.org\/Biology10\/q-12-define-fertilization-and-explain-its-types\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Q.12 Define fertilization and explain its types.<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[25],"tags":[],"_links":{"self":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1931"}],"collection":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/comments?post=1931"}],"version-history":[{"count":2,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1931\/revisions"}],"predecessor-version":[{"id":1936,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1931\/revisions\/1936"}],"wp:attachment":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/media?parent=1931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/categories?post=1931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/tags?post=1931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}