{"id":84739,"date":"2025-06-01T02:47:57","date_gmt":"2025-06-01T02:47:57","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=84739"},"modified":"2025-06-01T02:47:57","modified_gmt":"2025-06-01T02:47:57","slug":"which-one-of-the-following-elements-is-essential-for-the-formation-of","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-elements-is-essential-for-the-formation-of\/","title":{"rendered":"Which one of the following elements is essential for the formation of"},"content":{"rendered":"

Which one of the following elements is essential for the formation of chlorophyll in green plants?<\/p>\n

[amp_mcq option1=”Calcium” option2=”Iron” option3=”Magnesium” option4=”Potassium” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-1 – 2018<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nMagnesium (Mg) is an essential element for the formation of chlorophyll. Each chlorophyll molecule contains a magnesium atom at the center of a porphyrin ring structure.
\n<\/section>\n
\n– Chlorophyll is the primary pigment responsible for absorbing light energy during photosynthesis.
\n– Its unique structure, with a central magnesium atom, is crucial for its function in capturing light.
\n– Deficiency of magnesium in plants leads to chlorosis, a yellowing of leaves, particularly between the veins, due to reduced chlorophyll production.
\n<\/section>\n
\nCalcium is important for cell wall structure and signaling. Iron is essential for enzyme activity in chlorophyll synthesis and electron transport, but it is not a structural component of chlorophyll itself. Potassium is important for osmoregulation, enzyme activation, and stomatal control. While all these elements are vital for plant health and growth, Magnesium is the specific element that is a constituent part of the chlorophyll molecule.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following elements is essential for the formation of chlorophyll in green plants? [amp_mcq option1=”Calcium” option2=”Iron” option3=”Magnesium” option4=”Potassium” correct=”option3″] This question was previously asked in UPSC CDS-1 – 2018 Download PDFAttempt Online Magnesium (Mg) is an essential element for the formation of chlorophyll. Each chlorophyll molecule contains a magnesium atom at the … <\/p>\n

Detailed SolutionWhich one of the following elements is essential for the formation of<\/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":[1087],"tags":[1114,1117,1238],"class_list":["post-84739","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1114","tag-biology","tag-plant-nutrition","no-featured-image-padding"],"yoast_head":"\nWhich one of the following elements is essential for the formation of<\/title>\n<meta name=\"description\" content=\"Magnesium (Mg) is an essential element for the formation of chlorophyll. Each chlorophyll molecule contains a magnesium atom at the center of a porphyrin ring structure. - Chlorophyll is the primary pigment responsible for absorbing light energy during photosynthesis. - Its unique structure, with a central magnesium atom, is crucial for its function in capturing light. - Deficiency of magnesium in plants leads to chlorosis, a yellowing of leaves, particularly between the veins, due to reduced chlorophyll production.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-elements-is-essential-for-the-formation-of\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following elements is essential for the formation of\" \/>\n<meta property=\"og:description\" content=\"Magnesium (Mg) is an essential element for the formation of chlorophyll. Each chlorophyll molecule contains a magnesium atom at the center of a porphyrin ring structure. - Chlorophyll is the primary pigment responsible for absorbing light energy during photosynthesis. - Its unique structure, with a central magnesium atom, is crucial for its function in capturing light. - Deficiency of magnesium in plants leads to chlorosis, a yellowing of leaves, particularly between the veins, due to reduced chlorophyll production.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-elements-is-essential-for-the-formation-of\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T02:47:57+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following elements is essential for the formation of","description":"Magnesium (Mg) is an essential element for the formation of chlorophyll. 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