{"id":305,"date":"2023-06-11T21:59:02","date_gmt":"2023-06-11T16:29:02","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=305"},"modified":"2024-04-03T07:18:48","modified_gmt":"2024-04-03T01:48:48","slug":"q-which-of-the-following-are-detritivores","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-which-of-the-following-are-detritivores","title":{"rendered":"Q. Which of the following are detritivores?"},"content":{"rendered":"\n<ol class=\"wp-block-list\">\n<li>Earthworms<\/li>\n\n\n\n<li>Jellyfish<\/li>\n\n\n\n<li>Millipedes<\/li>\n\n\n\n<li>Seahorses<\/li>\n\n\n\n<li>Woodlice<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Select the correct answer using the code given below.<\/strong><\/p>\n\n\n\n<ul class=\"mcq wp-block-list\">\n<li>1, 2 and 4 Only<\/li>\n\n\n\n<li>2, 3, 4 and 5 Only<\/li>\n\n\n\n<li>1, 3 and 5 Only<\/li>\n\n\n\n<li>1, 2, 3, 4 and 5<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer: 1, 3 and 5 Only<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Notes:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Detritivores are the organism&nbsp;that feeds on detritus.<\/strong>&nbsp;A detritivore is a heterotrophic organism, which obtains its nutrition by feeding on detritus.<\/li>\n\n\n\n<li><strong>Detritus is the organic matter made up of dead plant and animal material.<\/strong><\/li>\n\n\n\n<li>Detritivores may also obtain nutrition by coprophagy, which is a feeding strategy involving the consumption of faeces.<\/li>\n\n\n\n<li>Detritivores are often invertebrate insects such as&nbsp;<strong>mites, beetles, butterflies and flies<\/strong>;&nbsp;<strong>mollusks such as slugs and snails; or soil-dwelling&nbsp;earthworms<\/strong>,&nbsp;<strong>millipedes<\/strong>&nbsp;and&nbsp;<strong>woodlice<\/strong>.<\/li>\n\n\n\n<li>Examples of detritivores in marine environments are&nbsp;<strong>crustaceans such as crabs and lobsters, echinoderms such as sea stars or sea cucumbers.<\/strong><\/li>\n\n\n\n<li>Many of these marine detritivores occupy a similar niche to terrestrial soil-dwellers, living on or within the seabed known as the benthos. These organisms are often called&nbsp;<strong>\u201cbottom-feeders\u201d.<\/strong><\/li>\n\n\n\n<li>Alternatively in aquatic ecosystems,&nbsp;<strong>stationary polychaete worms, barnacles and some corals derive their energy through filter-feeding on floating organic detritus called \u201dmarine snow\u201d.<\/strong><\/li>\n\n\n\n<li>Detritivores and decomposers contribute to the breakdown of all of the dead and decaying material in any ecosystem.<\/li>\n\n\n\n<li>In this way,&nbsp;<strong>they play an important role in the cycling of nutrients<\/strong>&nbsp;and are an essential part of most biogeochemical cycles, such as the carbon cycle, nitrogen cycle and&nbsp;phosphorus cycle.<\/li>\n<\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">Seahorse<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sea horses are&nbsp;<strong>tiny fish that are named for the shape of their head,<\/strong>&nbsp;which looks like the head of a tiny horse. They are classified as fish, in the genus&nbsp;<strong>Hippocampus.<\/strong><\/li>\n\n\n\n<li>There are&nbsp;<strong>46 species<\/strong>&nbsp;of seahorses reported<strong>&nbsp;worldwide.<\/strong>&nbsp;The coastal ecosystems of&nbsp;<strong>India house 9 out of 12 species found in the Indo-Pacific.<\/strong><\/li>\n\n\n\n<li>They are found in&nbsp;<strong>shallow coastal waters<\/strong>&nbsp;in latitudes from about&nbsp;<strong>52\u00b0 N to 45\u00b0S.<\/strong><\/li>\n\n\n\n<li>A\u00a0<strong>seahorse<\/strong>\u00a0gains energy by eating other live organisms, meaning it is a carnivore.\n<ul class=\"wp-block-list\">\n<li>A&nbsp;seahorse is&nbsp;<strong>not a decomposer<\/strong>&nbsp;because decomposers gain energy from breaking down dead&nbsp;organisms.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Seahorse populations in India are&nbsp;<strong>distributed across diverse ecosystems such as seagrass, mangroves, macroalgal beds, and coral reefs.<\/strong><\/li>\n\n\n\n<li><strong>Distribution in India:<\/strong>\n<ul class=\"wp-block-list\">\n<li>These 9 species are&nbsp;<strong>distributed along the coasts of eight States and five Union Territories from Gujarat to Odisha, apart from Lakshadweep and the Andaman and Nicobar Islands.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Slow Swimmers:<\/strong>\n<ul class=\"wp-block-list\">\n<li>When swimming they maintain a vertical position and propel themselves forward using a soft-rayed dorsal fin.<\/li>\n\n\n\n<li><mark>They&nbsp;<strong>migrate by rafting, clinging to floating substrata<\/strong>&nbsp;<\/mark>such as macroalgae or plastic debris for dispersal by ocean currents.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Unique Reproductive Habits:<\/strong>\n<ul class=\"wp-block-list\">\n<li><mark>The&nbsp;<strong>male gives birth to child<\/strong>&nbsp;as the female uses an ovipositor&nbsp;<\/mark>(egg duct) to place her eggs into a brood pouch located at the base of the male\u2019s tail where the eggs are later fertilized.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">Jellyfish<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Jellyfish are mainly&nbsp;<strong>free-swimming marine animals&nbsp;<\/strong>with umbrella-shaped bells and trailing tentacles, although a few are anchored to the seabed by stalks rather than being mobile. The bell can pulsate to provide propulsion for highly efficient locomotion.<\/li>\n\n\n\n<li><strong>Jellyfish<\/strong>\u00a0are\u00a0<strong>carnivores&nbsp;and excellent predators<\/strong>.\n<ul class=\"wp-block-list\">\n<li>They sting with tentacles to subdue small&nbsp;aquatic fish and eat the eggs and invertebrates that stick to their tentacles.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"The Fascinating World of Cnidarians\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/50Y5sVF5ktQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-_1e8553-f9 .kt-block-spacer{height:40px;}.wp-block-kadence-spacer.kt-block-spacer-_1e8553-f9 .kt-divider{border-top-width:2px;border-top-color:#eee;width:100%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-_1e8553-f9\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Select the correct answer using the code given below. Answer: 1, 3 and 5 Only Notes: Seahorse Jellyfish<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1,3],"tags":[36],"years":[52],"class_list":["post-305","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-environment","years-52"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":36,"label":"Environment"}],"years":[{"value":52,"label":"2021"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":36,"name":"Environment","slug":"environment","term_group":0,"term_taxonomy_id":36,"taxonomy":"post_tag","description":"","parent":0,"count":193,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=305"}],"version-history":[{"count":1,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/305\/revisions"}],"predecessor-version":[{"id":402,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/305\/revisions\/402"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=305"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}