{"id":504,"date":"2023-06-12T13:05:15","date_gmt":"2023-06-12T07:35:15","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=504"},"modified":"2024-04-03T07:13:53","modified_gmt":"2024-04-03T01:43:53","slug":"q-which-of-the-following-leaf-modifications-occur-s-in-the-desert-areas-to-inhibit-water-loss","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-which-of-the-following-leaf-modifications-occur-s-in-the-desert-areas-to-inhibit-water-loss","title":{"rendered":"Q. Which of the following leaf modifications occur (s) in the desert areas to inhibit water loss?"},"content":{"rendered":"\n<ol class=\"wp-block-list\" type=\"1\">\n<li>Hard and waxy leaves<\/li>\n\n\n\n<li>Tiny leaves<\/li>\n\n\n\n<li>Thorns instead of leaves<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Select the correct answer using the code given below:<\/p>\n\n\n\n<ul class=\"mcq wp-block-list\">\n<li>2 and 3 only<\/li>\n\n\n\n<li>2 only<\/li>\n\n\n\n<li>3 only<\/li>\n\n\n\n<li>1, 2 and 3<\/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: (d) 1, 2 and 3<\/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>There are&nbsp;<strong>some plants that grow in extremely dry conditions<\/strong>&nbsp;<strong>throughout the year<\/strong>.<\/li>\n\n\n\n<li>Structural adaptations are important to plant survival in the desert.<\/li>\n\n\n\n<li>For this purpose,&nbsp;<strong>they undergo some morphological adaptations<\/strong>&nbsp;in the xerophyte stem.<\/li>\n\n\n\n<li>These are as follows:<ul><li>The&nbsp;<strong>stems of woody xerophytes<\/strong>&nbsp;are comparatively&nbsp;<strong>stunted, hard, and rigid<\/strong>. They may be covered with thick bark. e.g.&nbsp;<strong>Acacia arabica<\/strong>.<\/li><li><strong>Wax coatings on leaves<\/strong>&nbsp;<strong>prevent water loss<\/strong>&nbsp;through evaporation because the&nbsp;loss of water from both the surface and the inside of leaves occurs in the hot desert.<\/li><li>The stem is covered by&nbsp;<strong>hairs or waxy coating<\/strong>.<\/li><li><strong>The main stem and branches<\/strong>&nbsp;may&nbsp;<strong>occur thick, fleshy, flattened, and have a green modified structure called phylloclade<\/strong>.<\/li><\/ul><ul><li>Leaves are also&nbsp;<strong>smaller on desert plants<\/strong>, further&nbsp;<strong>reducing the possibility of water loss.<\/strong><\/li><li>Phylloclades are found in succulent xerophytes. They&nbsp;<strong>do photosynthesis<\/strong>. e.g.&nbsp;<strong>Opuntia, Cacti<\/strong>&nbsp;etc.<\/li><li>Usually, in phylloclade bearing xerophytes,&nbsp;<strong>leaves are modified into spines<\/strong>&nbsp;that are known&nbsp;<strong>to check the rate of transpiration<\/strong>.<\/li><li>They have&nbsp;<strong>hard, thick coatings<\/strong>&nbsp;and some are&nbsp;<strong>covered in prickly spines<\/strong>&nbsp;to prevent water loss.<\/li><\/ul>\n<ul class=\"wp-block-list\">\n<li>It is to&nbsp;<strong>protect them from animals&nbsp;<\/strong>who might try to chew through them to get to their moisture.<\/li>\n\n\n\n<li>The stem may occur as an&nbsp;<strong>underground modified structure<\/strong>&nbsp;to store food and takes part in reproduction.&nbsp;<strong>e.g.&nbsp;Saccharum.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2023\/04\/xerophytes.jpeg\" alt=\"xerophytes\" class=\"wp-image-34009\" title=\"\"><\/figure>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-_583aff-ab .kt-block-spacer{height:40px;}.wp-block-kadence-spacer.kt-block-spacer-_583aff-ab .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-_583aff-ab\"><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: (d) 1, 2 and 3 Notes:<\/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":[55],"class_list":["post-504","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-environment","years-55"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":36,"label":"Environment"}],"years":[{"value":55,"label":"2018"}]},"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\/504","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=504"}],"version-history":[{"count":1,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/504\/revisions"}],"predecessor-version":[{"id":524,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/504\/revisions\/524"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=504"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=504"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=504"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=504"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}