{"id":19240,"date":"2024-01-12T10:03:05","date_gmt":"2024-01-12T04:33:05","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=19240"},"modified":"2025-04-05T16:11:28","modified_gmt":"2025-04-05T10:41:28","slug":"baleen-whale","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/baleen-whale\/","title":{"rendered":"Baleen whale"},"content":{"rendered":"<h2>About Baleen whales<\/h2>\n<ul>\n<li>These are any cetacean possessing\u00a0unique epidermal modifications of the mouth called baleen, which is used to filter food from water.<\/li>\n<li>Most mammals have teeth in their mouth. Baleen whales are a strange exception.<\/li>\n<li>Baleen is a\u00a0large rack of fine, hair-like keratin used to filter out small krill from the water.<\/li>\n<li>This structure enabled baleen whales to\u00a0feed efficiently on enormous shoals of tiny zooplankton in productive parts of the ocean, which facilitated the evolution of larger and larger body sizes.<\/li>\n<li>There are\u00a014 species of baleen whale including the blue, bowhead, right, humpback, minke and gray whale.<\/li>\n<li>Baleen whales are\u00a0generally larger than toothed whales except for the sperm whale which is very big and has teeth.<\/li>\n<li>Many baleen whales\u00a0migrate annually, travelling long distances between cold water feeding areas and warm water breeding areas.<\/li>\n<li>The large whale fossils from Australasia and South America seem to suggest that for most of the evolutionary history of baleen whales, whenever a large baleen whale shows up in the fossil record, it is in the Southern Hemisphere.<\/li>\n<li>Baleen whales\u00a0are ecosystem engineers, their huge bodies consuming tremendous amounts of energy.<\/li>\n<li>Upon death, these whales\u00a0provide an abundance\u00a0of nutrients to deep-sea ecosystems.<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What is Keratin?<\/h3>\n<p>It is a protein that your body produces naturally, and it helps keep your hair, skin and nails healthy and strong. Your body produces keratin naturally, but keratin shampoos and conditioners that contain keratin hydrolysates may strengthen your hair and improve its appearance.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/19-million-year-old-fossil-jaw-bone-hints-the-biggest-whales-first-evolved-somewhere-unexpected\/article67709575.ece\" target=\"_blank\" rel=\"nofollow noopener\"><u>19-million-year-old fossil jaw bone hints the biggest whales first evolved somewhere unexpected\u00a0<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Baleen whale are any cetacean possessing unique epidermal modifications of the mouth called baleen, which is used to filter food from water.<\/p>\n","protected":false},"author":5,"featured_media":19241,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-19240","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/19240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=19240"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/19240\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/19241"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=19240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=19240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=19240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}