{"id":88182,"date":"2025-06-01T07:04:07","date_gmt":"2025-06-01T07:04:07","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88182"},"modified":"2025-06-01T07:04:07","modified_gmt":"2025-06-01T07:04:07","slug":"in-blood-platelets-are-required-for","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-blood-platelets-are-required-for\/","title":{"rendered":"In blood, platelets are required for:"},"content":{"rendered":"

In blood, platelets are required for:<\/p>\n

[amp_mcq option1=”transporting oxygen” option2=”transporting carbon dioxide” option3=”initiating blood clotting” option4=”initiating degradation of urea” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2015<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct option is C, initiating blood clotting.
\n<\/section>\n
\nPlatelets, also known as thrombocytes, are small, anucleated cell fragments in the blood that play a crucial role in hemostasis, the process by which bleeding is stopped. When a blood vessel is injured, platelets aggregate at the site of injury, forming a platelet plug. They also release factors that activate the coagulation cascade, a complex series of reactions leading to the formation of a fibrin clot, which reinforces the platelet plug and seals the damaged vessel. Red blood cells (erythrocytes) are responsible for transporting oxygen. Carbon dioxide is transported in the blood in various forms (dissolved in plasma, bound to hemoglobin, or as bicarbonate ions). Urea is a waste product transported by the blood to the kidneys for excretion; its degradation primarily occurs in the liver during its formation from ammonia.
\n<\/section>\n
\nDeficiency or dysfunction of platelets can lead to bleeding disorders, such as thrombocytopenia. Conversely, excessive platelet activation can contribute to the formation of blood clots (thrombosis) within blood vessels, which can lead to serious conditions like heart attacks or strokes.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

In blood, platelets are required for: [amp_mcq option1=”transporting oxygen” option2=”transporting carbon dioxide” option3=”initiating blood clotting” option4=”initiating degradation of urea” correct=”option3″] This question was previously asked in UPSC NDA-2 – 2015 Download PDFAttempt Online The correct option is C, initiating blood clotting. Platelets, also known as thrombocytes, are small, anucleated cell fragments in the blood that … <\/p>\n

Detailed SolutionIn blood, platelets are required for:<\/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":[1094],"tags":[1443,1117,1126],"class_list":["post-88182","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1443","tag-biology","tag-circulatory-system","no-featured-image-padding"],"yoast_head":"\nIn blood, platelets are required for:<\/title>\n<meta name=\"description\" content=\"The correct option is C, initiating blood clotting. Platelets, also known as thrombocytes, are small, anucleated cell fragments in the blood that play a crucial role in hemostasis, the process by which bleeding is stopped. When a blood vessel is injured, platelets aggregate at the site of injury, forming a platelet plug. They also release factors that activate the coagulation cascade, a complex series of reactions leading to the formation of a fibrin clot, which reinforces the platelet plug and seals the damaged vessel. Red blood cells (erythrocytes) are responsible for transporting oxygen. Carbon dioxide is transported in the blood in various forms (dissolved in plasma, bound to hemoglobin, or as bicarbonate ions). Urea is a waste product transported by the blood to the kidneys for excretion; its degradation primarily occurs in the liver during its formation from ammonia.\" \/>\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\/in-blood-platelets-are-required-for\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In blood, platelets are required for:\" \/>\n<meta property=\"og:description\" content=\"The correct option is C, initiating blood clotting. Platelets, also known as thrombocytes, are small, anucleated cell fragments in the blood that play a crucial role in hemostasis, the process by which bleeding is stopped. When a blood vessel is injured, platelets aggregate at the site of injury, forming a platelet plug. They also release factors that activate the coagulation cascade, a complex series of reactions leading to the formation of a fibrin clot, which reinforces the platelet plug and seals the damaged vessel. Red blood cells (erythrocytes) are responsible for transporting oxygen. Carbon dioxide is transported in the blood in various forms (dissolved in plasma, bound to hemoglobin, or as bicarbonate ions). Urea is a waste product transported by the blood to the kidneys for excretion; its degradation primarily occurs in the liver during its formation from ammonia.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/in-blood-platelets-are-required-for\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:04:07+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":"In blood, platelets are required for:","description":"The correct option is C, initiating blood clotting. 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