{"id":32597,"date":"2025-06-22T17:13:04","date_gmt":"2025-06-22T17:13:04","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=32597"},"modified":"2025-06-22T17:13:07","modified_gmt":"2025-06-22T17:13:07","slug":"below-is-a-series-of-pictures-of-a-eudicot-stem-tip-i-s-coleus-sp","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/below-is-a-series-of-pictures-of-a-eudicot-stem-tip-i-s-coleus-sp\/","title":{"rendered":"Below is a series of pictures of a eudicot stem tip (I.s.), Coleus sp."},"content":{"rendered":"\n<p>Below is a series of pictures of a eudicot stem tip (I.s.), Coleus sp. Much of what plant biologists have learned about leaf development has occurred by studying stem tip genetics. 40x (Ls-) Make a sketch of the 40x stem longitudinal section and upload it here with the following structures labeled: apical meristem, leaf primordium, axillary bud, procambium, vascular tissue (need to look lower down the stem for these sub-tissues), ground meristem, cortex; pith.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>Here is a <strong>sketch of a longitudinal section (L.S.) of a eudicot stem tip (Coleus sp.) at 40x magnification<\/strong>, with the required structures labeled:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>[Image Placeholder: Sketch with labels]<\/strong><\/p>\n\n\n\n<p>Since I cannot draw or upload sketches directly into this message, I will describe the drawing so you can sketch it yourself or verify against your image:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">How to Sketch:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Start with the stem tip<\/strong> at the top center of your drawing.<\/li>\n\n\n\n<li><strong>Draw the dome-shaped apical meristem<\/strong> at the very tip.<\/li>\n\n\n\n<li><strong>Beneath and to the sides<\/strong>, draw two small bulges that represent the <strong>leaf primordia<\/strong>.<\/li>\n\n\n\n<li><strong>At the base of each leaf primordium<\/strong>, draw a small bud-like structure: these are the <strong>axillary buds<\/strong>.<\/li>\n\n\n\n<li><strong>Below the apical meristem<\/strong>, sketch vertical strands running downwards: these are the <strong>procambium<\/strong>.<\/li>\n\n\n\n<li>The <strong>vascular tissue<\/strong> (xylem and phloem) develops from the procambium and should be shown lower in the stem section.<\/li>\n\n\n\n<li><strong>Surrounding the procambium<\/strong>, draw the <strong>ground meristem<\/strong>, a mass of cells filling the space around developing tissues.<\/li>\n\n\n\n<li><strong>Towards the outer edges<\/strong>, show a zone of loosely packed cells: this is the <strong>cortex<\/strong>.<\/li>\n\n\n\n<li>In the center of the stem section, draw a circular region: this is the <strong>pith<\/strong>.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<p>The longitudinal section of a eudicot stem tip, such as that of <em>Coleus<\/em> sp., provides an essential view into plant development. At the very top of the stem is the <strong>apical meristem<\/strong>, a region of actively dividing cells responsible for vertical growth. This meristem produces new cells that will differentiate into various tissues of the plant.<\/p>\n\n\n\n<p>Just below the apical meristem, small lateral bulges known as <strong>leaf primordia<\/strong> begin to form. These will develop into mature leaves. At the base of each primordium, a smaller outgrowth forms the <strong>axillary bud<\/strong>, which can potentially become a new branch or flower.<\/p>\n\n\n\n<p>As cells divide and differentiate downward from the apical meristem, they form distinct zones. The <strong>procambium<\/strong> is one of the primary meristems, giving rise to the <strong>vascular tissues<\/strong>\u2014xylem and phloem\u2014that are critical for water and nutrient transport. These tissues become more distinct farther from the tip.<\/p>\n\n\n\n<p>Surrounding the procambium is the <strong>ground meristem<\/strong>, which differentiates into the <strong>cortex<\/strong> and <strong>pith<\/strong>. The <strong>cortex<\/strong> lies just beneath the epidermis and functions in support and storage. The <strong>pith<\/strong> occupies the central part of the stem and is composed of parenchyma cells, primarily used for storage and sometimes for transport in young stems.<\/p>\n\n\n\n<p>Together, these structures demonstrate how new organs and tissues emerge through a coordinated developmental process, starting from the apical meristem and leading to the formation of a functional stem capable of supporting leaves, transport, and growth.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-415.jpeg\" alt=\"\" class=\"wp-image-32598\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-415.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-415-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-415-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Below is a series of pictures of a eudicot stem tip (I.s.), Coleus sp. Much of what plant biologists have learned about leaf development has occurred by studying stem tip genetics. 40x (Ls-) Make a sketch of the 40x stem longitudinal section and upload it here with the following structures labeled: apical meristem, leaf primordium, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-32597","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/32597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=32597"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/32597\/revisions"}],"predecessor-version":[{"id":32599,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/32597\/revisions\/32599"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=32597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=32597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=32597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}