{"id":87092,"date":"2025-06-01T04:27:58","date_gmt":"2025-06-01T04:27:58","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87092"},"modified":"2025-06-01T04:27:58","modified_gmt":"2025-06-01T04:27:58","slug":"after-few-days-of-sowing-of-maize-seeds-in-the-soil-irrespective-of-t","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/after-few-days-of-sowing-of-maize-seeds-in-the-soil-irrespective-of-t\/","title":{"rendered":"After few days of sowing of maize seeds in the soil, irrespective of t"},"content":{"rendered":"

After few days of sowing of maize seeds in the soil, irrespective of their position, the radicle always grows downwards, whereas the coleoptile always grows upwards. This phenomenon is known as :<\/p>\n

[amp_mcq option1=”Phototropism” option2=”Hydrotropism” option3=”Chemotropism” option4=”Geotropism” correct=”option4″]<\/p>\n

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\n
This question was previously asked in<\/div>\n
UPSC Geoscientist – 2024<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe phenomenon described is the directed growth of plant parts in response to gravity. The radicle (root) grows downwards towards gravity (positive geotropism), while the coleoptile (shoot) grows upwards away from gravity (negative geotropism). This response to gravity is known as geotropism, or more modernly, gravitropism.
\n<\/section>\n
\nGeotropism is the directional growth of plant parts in response to gravity.
\n<\/section>\n
\nPhototropism is the growth response to light (shoots are typically positive phototropic, roots negative). Hydrotropism is the growth response to water (roots are typically positive hydrotropic). Chemotropism is the growth response to chemicals.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

After few days of sowing of maize seeds in the soil, irrespective of their position, the radicle always grows downwards, whereas the coleoptile always grows upwards. This phenomenon is known as : [amp_mcq option1=”Phototropism” option2=”Hydrotropism” option3=”Chemotropism” option4=”Geotropism” correct=”option4″] This question was previously asked in UPSC Geoscientist – 2024 Download PDFAttempt Online The phenomenon described is … <\/p>\n

Detailed SolutionAfter few days of sowing of maize seeds in the soil, irrespective of t<\/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":[1103,1117,1118],"class_list":["post-87092","post","type-post","status-publish","format-standard","hentry","category-upsc-geoscientist","tag-1103","tag-biology","tag-plant-physiology","no-featured-image-padding"],"yoast_head":"\nAfter few days of sowing of maize seeds in the soil, irrespective of t<\/title>\n<meta name=\"description\" content=\"The phenomenon described is the directed growth of plant parts in response to gravity. The radicle (root) grows downwards towards gravity (positive geotropism), while the coleoptile (shoot) grows upwards away from gravity (negative geotropism). This response to gravity is known as geotropism, or more modernly, gravitropism. Geotropism is the directional growth of plant parts in response to gravity.\" \/>\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\/after-few-days-of-sowing-of-maize-seeds-in-the-soil-irrespective-of-t\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"After few days of sowing of maize seeds in the soil, irrespective of t\" \/>\n<meta property=\"og:description\" content=\"The phenomenon described is the directed growth of plant parts in response to gravity. The radicle (root) grows downwards towards gravity (positive geotropism), while the coleoptile (shoot) grows upwards away from gravity (negative geotropism). This response to gravity is known as geotropism, or more modernly, gravitropism. 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