{"id":1916,"date":"2020-07-15T13:47:29","date_gmt":"2020-07-15T13:47:29","guid":{"rendered":"https:\/\/murreeroad.org\/Biology10\/?p=1916"},"modified":"2020-07-15T13:47:29","modified_gmt":"2020-07-15T13:47:29","slug":"q8-explain-the-development-and-structure-of-seed","status":"publish","type":"post","link":"https:\/\/murreeroad.org\/Biology10\/q8-explain-the-development-and-structure-of-seed\/","title":{"rendered":"Q8. Explain the development and structure of seed."},"content":{"rendered":"<p><strong>Q8.\u00a0Explain the development and structure of seed.<\/strong><br \/>\n<strong>Introduction<\/strong><br \/>\nAfter fertilization in female gametophyte, zygote divides repeatedly by mitosis and develops into an embryo. At this stage, ovule changes into seed and this completes process of sexual reproduction in plants.<br \/>\n<strong>Structure of seed <\/strong><br \/>\nIt consists of three parts<br \/>\n1. Embryo formed from zygote.<br \/>\n2. Endosperm tissue formed from endosperm nucleus.<br \/>\n3. Seed coat developed from the wall of ovule.<br \/>\n<strong>Seed coat <\/strong><br \/>\nIt develops from the wall of ovule. It may be a thin or thick layer. Seed coat protects embryo from mechanical injury and from drying out.<br \/>\n<strong>Hilum<\/strong><br \/>\nThere is a scar on the seed coat called hilum. It is where the seed is attached to the ovary wall.<br \/>\n<strong>Micropyle<\/strong><br \/>\nAt one end of hilum, is micropyle. Seed uses this micropyle for absorption of water. &#8221;<br \/>\n<strong>Development of seed<\/strong><br \/>\nEmboryo is an immature plant. It consists of a radicle, a plumule and two cotyledons. The radicle of the embryo develops into new root while plumule develops into new shoot. The embryonic stem above the point of attachment of cotyledons is called epicotyl and embryonic stem below the point of attachment of cotyledon called hypocotyl. In angiosperms, the stored food is derived from the endosperm tissue.<br \/>\n<img loading=\"lazy\" class=\"size-full wp-image-1917 aligncenter\" src=\"https:\/\/murreeroad.org\/Biology10\/wp-content\/uploads\/2020\/07\/Development-of-seed.jpg\" alt=\"Development of seed\" width=\"278\" height=\"189\" \/><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>Q8.\u00a0Explain the development and structure of seed. Introduction After fertilization in female gametophyte, zygote divides repeatedly by mitosis and develops into an embryo. At this stage, ovule changes into seed and this completes process of sexual reproduction in plants. Structure of seed It consists of three parts 1. Embryo formed from zygote. 2. Endosperm tissue&hellip;&nbsp;<a href=\"https:\/\/murreeroad.org\/Biology10\/q8-explain-the-development-and-structure-of-seed\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Q8. Explain the development and structure of seed.<\/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\/1916"}],"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=1916"}],"version-history":[{"count":1,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1916\/revisions"}],"predecessor-version":[{"id":1918,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/posts\/1916\/revisions\/1918"}],"wp:attachment":[{"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/media?parent=1916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/categories?post=1916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/murreeroad.org\/Biology10\/wp-json\/wp\/v2\/tags?post=1916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}