{"id":4358,"date":"2025-06-16T16:24:22","date_gmt":"2025-06-16T10:54:22","guid":{"rendered":"https:\/\/leverageedu.com\/questions-answers\/?p=4358"},"modified":"2025-06-16T16:24:26","modified_gmt":"2025-06-16T10:54:26","slug":"parietal-placentation-occurs-in-the-family-class-11-biology-cbse","status":"publish","type":"post","link":"https:\/\/leverageedu.com\/questions-answers\/parietal-placentation-occurs-in-the-family-class-11-biology-cbse\/","title":{"rendered":"Parietal Placentation occurs in the Family"},"content":{"rendered":"\n<p><strong>Answer:<\/strong> To solve this question, we first need to understand what placentation is and what parietal placentation means. Placentation refers to the arrangement of ovules inside the ovary of a flower. The type of placentation affects how seeds are arranged in the fruit. There are different types, like:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Marginal (found in legumes)<\/li>\n\n\n\n<li>Axile (found in tomato and lemon)<\/li>\n\n\n\n<li>Parietal (our focus here)<\/li>\n\n\n\n<li>Free central, etc.<br><\/li>\n<\/ul>\n\n\n\n<p class=\"has-medium-font-size\"><strong>What is Parietal Placentation?<\/strong><\/p>\n\n\n\n<p>In parietal placentation, the ovules are attached to the inner wall of the ovary or to extensions of it. The ovary is usually unilocular (having a single chamber), and the placenta is located on the inner wall.<\/p>\n\n\n\n<p>Now, let\u2019s look at the Options and analyse each to find the correct option:<\/p>\n\n\n\n<p><strong>(A) Brassicaceae<\/strong><\/p>\n\n\n\n<p>Yes, plants in this family, like mustard, show parietal placentation. The ovary is unilocular at first, and the ovules are attached to the ovary wall. Later, a false septum (partition) may form, making it look bilocular (two chambers), but originally it\u2019s unilocular with parietal placentation.<\/p>\n\n\n\n<p><strong>(B) Asteraceae<\/strong><\/p>\n\n\n\n<p>This is also known as the Sunflower Family. This family usually shows basal placentation, where the ovules are attached at the base of the ovary. The ovary is unilocular, but the ovule attachment is different.<\/p>\n\n\n\n<p><strong>(C) Solanaceae<\/strong><\/p>\n\n\n\n<p>This family includes tomato, potato, and brinjal. Solanaceae typically exhibit axile placentation, where the ovules are attached to a central axis, and the ovary is divided into multiple chambers (multilocular).<\/p>\n\n\n\n<p><strong>(D) Liliaceae<\/strong><\/p>\n\n\n\n<p>Members of this family (like lily) also have axile placentation, not parietal. The ovary has multiple chambers with ovules attached to a central axis.<\/p>\n\n\n\n<p><strong>Correct Answer: (A) Brassicaceae<\/strong><\/p>\n\n\n\n<p>So to understand this in a better way, if the ovules are stuck to the walls inside the ovary, not in the centre, it\u2019s called parietal placentation. Mustard (Brassicaceae) is a common example. It starts with one chamber and later may look like it has two. That\u2019s why option (a) Brassicaceae is correct.<\/p>\n\n\n\n<p><strong>Common Doubts of Biology:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-pale-ocean-gradient-background has-background has-fixed-layout\"><tbody><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/describe-the-activities-that-take-place-during-the-photosynthesis-process\/\"><strong>Describe the activities that take place during the photosynthesis process<\/strong><\/a><\/td><\/tr><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/differentiate-between-self-pollination-and-cross-pollination-class-12-biology-cbse\/\"><strong>Differentiate between Self-Pollination and Cross Pollination.<\/strong><\/a><\/td><\/tr><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/differentiate-between-autogamy-and-geitonogamy-class-12-biology-cbse\/\"><strong>Differentiate between Autogamy and Geitonogamy<\/strong><\/a><\/td><\/tr><tr><td><a href=\"https:\/\/leverageedu.com\/questions-answers\/china-rose-belong-to-the-family-a-solanaceae-b-class-11-biology-cbse\/\"><strong>China Rose Belong to the Family____<\/strong><\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"Answer: To solve this question, we first need to understand what placentation is and what parietal placentation means.&hellip;\n","protected":false},"author":122,"featured_media":4363,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"editor_notices":[],"footnotes":""},"categories":[8,4],"tags":[],"class_list":{"0":"post-4358","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-biology","8":"category-science"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Parietal Placentation occurs in the Family<\/title>\n<meta name=\"description\" content=\"To understand the Parietal Placentation occurrence in the plant family, go through this Biology Q\/A for Class 11 students.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/leverageedu.com\/questions-answers\/parietal-placentation-occurs-in-the-family-class-11-biology-cbse\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Parietal Placentation occurs in the Family\" \/>\n<meta property=\"og:description\" content=\"To understand the Parietal Placentation occurrence in the plant family, go through this Biology Q\/A for Class 11 students.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/leverageedu.com\/questions-answers\/parietal-placentation-occurs-in-the-family-class-11-biology-cbse\/\" \/>\n<meta property=\"og:site_name\" content=\"Questions &amp; 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