{"id":5514,"date":"2023-02-05T05:59:49","date_gmt":"2023-02-05T05:59:49","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=5514"},"modified":"2024-12-13T11:32:31","modified_gmt":"2024-12-13T11:32:31","slug":"s-20-b-how-are-seeds-dispersed","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-20-b-how-are-seeds-dispersed\/","title":{"rendered":"S-20.b How Are Seeds Dispersed?"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>How Are Seeds Dispersed?<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">1. <strong>Seed Dispersal Definition<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Seed dispersal<\/strong> is the process by which seeds are spread from the parent plant to new locations where they can germinate and grow.<\/li>\n\n\n\n<li>It helps plants reduce competition for resources like sunlight, water, and nutrients.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">2. <strong>Importance of Seed Dispersal<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Prevents overcrowding around the parent plant.<\/li>\n\n\n\n<li>Increases the chances of species survival by spreading seeds to different environments.<\/li>\n\n\n\n<li>Helps plants colonize new areas, expanding their range.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">3. <strong>Types of Seed Dispersal<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\">There are <strong>four main methods<\/strong> of seed dispersal:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Wind Dispersal (Anemochory)<\/strong>\n<ul class=\"wp-block-list\">\n<li>Seeds are carried by wind.<\/li>\n\n\n\n<li>Examples: Dandelion, Maple, and Cottonwood trees.<\/li>\n\n\n\n<li>Characteristics: Light, winged, or feathery seeds that can float in the air.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Water Dispersal (Hydrochory)<\/strong>\n<ul class=\"wp-block-list\">\n<li>Seeds are dispersed by water.<\/li>\n\n\n\n<li>Examples: Coconuts, Water lilies.<\/li>\n\n\n\n<li>Characteristics: Seeds can float on water and travel across rivers, lakes, or oceans.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Animal Dispersal (Zoochory)<\/strong>\n<ul class=\"wp-block-list\">\n<li>Seeds are carried by animals, either by sticking to their fur or being eaten and later excreted.<\/li>\n\n\n\n<li>Examples: Burdock (seeds stick to fur), berries (eaten by birds or mammals).<\/li>\n\n\n\n<li>Characteristics: Seeds are often sticky, fleshy, or edible to attract animals. They can be dropped or excreted in a different location.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Explosion Dispersal (Autochory)<\/strong>\n<ul class=\"wp-block-list\">\n<li>Seeds are scattered when the fruit explodes or opens forcefully.<\/li>\n\n\n\n<li>Examples: Peas, Violaceae (Violet family), and Witch hazel.<\/li>\n\n\n\n<li>Characteristics: Seeds are shot away from the plant as the fruit bursts open, often using mechanical force.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">4. <strong>Adaptations for Dispersal<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\">Plants have special features that help them disperse their seeds effectively:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Wings or Parachutes<\/strong>: Help seeds float through the air (e.g., maple seeds).<\/li>\n\n\n\n<li><strong>Hooks or Barbs<\/strong>: Allow seeds to attach to animal fur (e.g., burrs).<\/li>\n\n\n\n<li><strong>Fleshy Fruits<\/strong>: Attract animals to eat and later excrete the seeds (e.g., berries, mangoes).<\/li>\n\n\n\n<li><strong>Light and Waterproof Seeds<\/strong>: Help seeds float on water (e.g., coconuts).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">5. <strong>Examples of Seed Dispersal in Nature<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Coconut<\/strong>: The large, fibrous fruit floats on water, helping it travel across oceans.<\/li>\n\n\n\n<li><strong>Dandelion<\/strong>: Its light, feathery seeds are blown by the wind, traveling long distances.<\/li>\n\n\n\n<li><strong>Burrs<\/strong>: Seeds with hooks that attach to animals\u2019 fur and are carried to new locations.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">6. <strong>Advantages of Different Methods<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Wind<\/strong>: Disperses seeds far and wide without relying on other organisms.<\/li>\n\n\n\n<li><strong>Water<\/strong>: Enables seeds to travel across large bodies of water.<\/li>\n\n\n\n<li><strong>Animals<\/strong>: Provides a way for seeds to travel long distances, sometimes across varied terrain.<\/li>\n\n\n\n<li><strong>Explosion<\/strong>: Effective for plants growing in densely populated areas or where animals cannot easily reach.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">7. <strong>Factors Affecting Seed Dispersal<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Environment<\/strong>: Plants in dry, windy areas may rely more on wind dispersal, while those near water may depend on water dispersal.<\/li>\n\n\n\n<li><strong>Plant Size and Type<\/strong>: Smaller plants may use wind or animals, while larger trees may use explosive or water dispersal.<\/li>\n\n\n\n<li><strong>Animal Behavior<\/strong>: Animals play a significant role in seed dispersal, especially in forest ecosystems.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\">8. <strong>Key Terms to Remember<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Dispersal<\/strong>: The movement of seeds from the parent plant.<\/li>\n\n\n\n<li><strong>Germination<\/strong>: The process of a seed growing into a new plant.<\/li>\n\n\n\n<li><strong>Pollination<\/strong>: The transfer of pollen from one flower to another to enable seed formation.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/82614\/496\/779\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-100.png\" alt=\"\" class=\"wp-image-6154\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-100.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-100-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-100-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-100-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81741\/886\/738\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-94.png\" alt=\"\" class=\"wp-image-6155\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-94.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-94-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-94-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-94-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>How Are Seeds Dispersed? Key Notes : 1. Seed Dispersal Definition 2. Importance of Seed Dispersal 3. Types of Seed Dispersal There are four main methods of seed dispersal: 4. Adaptations for Dispersal Plants have special features that help them disperse their seeds effectively: 5. Examples of Seed Dispersal in Nature 6. Advantages of Different<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/s-20-b-how-are-seeds-dispersed\/\">Continue reading <span class=\"screen-reader-text\">&#8220;S-20.b How Are Seeds Dispersed?&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-5514","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/5514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=5514"}],"version-history":[{"count":13,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/5514\/revisions"}],"predecessor-version":[{"id":15409,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/5514\/revisions\/15409"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=5514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}