{"id":87227,"date":"2025-06-01T06:36:59","date_gmt":"2025-06-01T06:36:59","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87227"},"modified":"2025-06-01T06:36:59","modified_gmt":"2025-06-01T06:36:59","slug":"which-one-of-the-following-has-non-nucleated-cells-at-maturity","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-has-non-nucleated-cells-at-maturity\/","title":{"rendered":"Which one of the following has non-nucleated cells at maturity?"},"content":{"rendered":"<p>Which one of the following has non-nucleated cells at maturity?<\/p>\n<p>[amp_mcq option1=&#8221;Xylem parenchyma&#8221; option2=&#8221;Xylem fibre&#8221; option3=&#8221;Palisade parenchyma&#8221; option4=&#8221;Companion cell&#8221; correct=&#8221;option2&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC Geoscientist &#8211; 2023<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-geoscientist-2023.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-geoscientist-2023\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nXylem fibre has non-nucleated cells at maturity.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nDifferent types of plant cells have varying structures and functions, and their state at maturity (living or dead, presence or absence of organelles like nucleus) differs.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nXylem parenchyma cells are living cells and possess a nucleus at maturity. Palisade parenchyma cells are living, photosynthetic cells in leaves and have a nucleus. Companion cells are living cells associated with sieve tube elements in phloem and have a nucleus, which is metabolically active and supports the sieve tube element. Xylem fibres are sclerenchymatous cells that provide mechanical support. They develop thick lignified cell walls and are typically dead at maturity, meaning they lose their protoplast, including the nucleus, cytoplasm, and other organelles. Another prominent example of a non-nucleated cell at maturity in vascular plants is the sieve tube element of the phloem, which relies on the adjacent companion cell for metabolic support.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which one of the following has non-nucleated cells at maturity? [amp_mcq option1=&#8221;Xylem parenchyma&#8221; option2=&#8221;Xylem fibre&#8221; option3=&#8221;Palisade parenchyma&#8221; option4=&#8221;Companion cell&#8221; correct=&#8221;option2&#8243;] This question was previously asked in UPSC Geoscientist &#8211; 2023 Download PDFAttempt Online Xylem fibre has non-nucleated cells at maturity. Different types of plant cells have varying structures and functions, and their state at maturity &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which one of the following has non-nucleated cells at maturity?\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-has-non-nucleated-cells-at-maturity\/#more-87227\">Detailed Solution<span class=\"screen-reader-text\">Which one of the following has non-nucleated cells at maturity?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1091],"tags":[1105,1117,1152],"class_list":["post-87227","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1105","tag-biology","tag-cell","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which one of the following has non-nucleated cells at maturity?<\/title>\n<meta name=\"description\" content=\"Xylem fibre has non-nucleated cells at maturity. 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