{"id":2341,"date":"2022-11-14T07:48:55","date_gmt":"2022-11-14T07:48:55","guid":{"rendered":"https:\/\/theexampillar.com\/ncert\/?p=2341"},"modified":"2022-11-29T06:41:09","modified_gmt":"2022-11-29T06:41:09","slug":"ncert-solutions-class-7-science-chapter-17-forests-our-lifeline","status":"publish","type":"post","link":"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-science-chapter-17-forests-our-lifeline\/","title":{"rendered":"NCERT Solutions Class 7 Science Chapter 17 Forests: Our Lifeline"},"content":{"rendered":"<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">NCERT Solutions Class 7 Science\u00a0<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">The NCERT Solutions in English Language for Class 7 Science <strong>Chapter &#8211; 17 (Forests: Our Lifeline) <\/strong>has been provided here to help the students in solving the questions from this exercise.<\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">Chapter &#8211; 17 (Forests: Our Lifeline)<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. Explain how animals dwelling in the forest help it grow and regenerate.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0<\/strong>Animals which live in the forest help it grow and regenerate in following ways:<\/span><\/p>\n<ul type=\"a\">\n<li><span style=\"color: #000000;\">By eating vegetation they clear land for fresh growth<\/span><\/li>\n<li><span style=\"color: #000000;\">Animals help flowering plants in pollination and seed dispersal<\/span><\/li>\n<li><span style=\"color: #000000;\">Dead remains of animals make humus after decomposition. This increases soil fertility<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. Explain how forests prevent floods.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>Forests can absorb a lot of water. The roots of the trees absorb the water and prevent it from flowing away. Roots of trees also help in percolation of water into the soil. This helps in preventing floods.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. What are decomposers? Name any two of them. What do they do in the forest?<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211; <\/strong>Decomposers are micro-organisms that convert the dead plants and animals to humus. Bacteria and fungi are the two types of decomposers. They help in the process of recycling of nutrients by decomposing various dead organisms such as plants and animals to form humus.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>Forests are called the green lungs. This is because plants in forests release oxygen through the process of photosynthesis and help in providing oxygen to animals for respiration. Plants consume carbon dioxide released by the animals. In this way, plants help in maintaining a balance of oxygen and carbon dioxide in atmosphere.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>5. Explain why there is no waste in a forest.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>There is no waste in a forest because micro-organisms act on the wastes and convert them to humus. This humus ensures that the nutrients are returned back to the soil.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>6. List five products we get from forests.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211; <\/strong>(i) We get medicines from forests.<\/span><br \/>\n<span style=\"color: #000000;\">(ii) We get gum from forests.<\/span><br \/>\n<span style=\"color: #000000;\">(iii) We get wood which is used for many purposes like making furniture, paper etc.<\/span><br \/>\n<span style=\"color: #000000;\">(iv) We get food for animals from forests.<\/span><br \/>\n<span style=\"color: #000000;\">(v) We get sealing wax from forests.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>7. Fill in the blanks:<br \/>\n<\/strong>(a) The insects, butterflies, honeybees and birds help flowering plants in ________.<br \/>\n(b) A forest is a purifier of ________ and ________ .<br \/>\n(c) Herbs form the ________ layer in the forest.<br \/>\n(d) The decaying leaves and animal droppings in a forest enrich the ________ .<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<br \/>\n<\/strong>(a) The insects, butterflies, honeybees and birds help flowering plants in <span style=\"text-decoration: underline;\"><strong>pollination<\/strong><\/span>.<br \/>\n(b) A forest is a purifier of\u00a0<span style=\"text-decoration: underline;\"><strong>air<\/strong><\/span>\u00a0and\u00a0<span style=\"text-decoration: underline;\"><strong>water<\/strong><\/span>.<br \/>\n(c) Herbs form the\u00a0<span style=\"text-decoration: underline;\"><strong>lowest<\/strong><\/span>\u00a0layer in the forest.<br \/>\n(d) The decaying leaves and animal droppings in a forest enrich the\u00a0<span style=\"text-decoration: underline;\"><strong>soil<\/strong><\/span>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>8. Why should we worry about the conditions and issues related to forests far from us?<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>We should worry about the forest for the following reasons.<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"color: #000000;\">A decrease in forest results in an increase in carbon dioxide content in the atmosphere. This results in global warming.<\/span><\/li>\n<li><span style=\"color: #000000;\">Depletion of forests results in soil erosion<\/span><\/li>\n<li><span style=\"color: #000000;\">Decrease in forest adversely affect the lives of animals living in the forest.<\/span><\/li>\n<li><span style=\"color: #000000;\">Absence of forests leads to flooding more often.<\/span><\/li>\n<li><span style=\"color: #000000;\">Due to the reduction of forest land will turn barren which is called desertification.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>9. Explain why there is a need of variety of animals and plants in a forest.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0<\/strong>Variety of plants and animals in the forests helps plants to regenerate and grow. More excellent range of plants supports herbivores, which in turn serve as food for carnivores. Decomposers turn dead animals and plants into humus; thereby maintain nutrient recycling. This wide variety makes forest a dynamic living entity.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>10. In Fig. 17.15, the artist has forgotten to put the labels and directions on the arrows. Mark the directions on the arrows and label the diagram using the following labels: clouds, rain, atmosphere, carbon dioxide, oxygen, plants, animals, soil, roots, water table.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2426\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Q-10.png\" alt=\"NCERT Class 7 Science Solution\" width=\"341\" height=\"544\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Q-10.png 341w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Q-10-188x300.png 188w\" sizes=\"auto, (max-width: 341px) 100vw, 341px\" \/><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<\/strong><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2427\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Ans-10.png\" alt=\"NCERT Class 7 Science Solution\" width=\"509\" height=\"544\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Ans-10.png 509w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Ans-10-281x300.png 281w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-17-Ans-10-480x513.png 480w\" sizes=\"auto, (max-width: 509px) 100vw, 509px\" \/><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>11. Which of the following is not a forest product?<br \/>\n<\/strong>(i) Gum<br \/>\n(ii) Plywood<br \/>\n(iii) Sealing wax<br \/>\n(iv) Kerosene<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>(iv) Kerosene<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>12. Which of the following statements is not correct?<br \/>\n<\/strong>(i) Forests protect the soil from erosion.<br \/>\n(ii) Plants and animals in a forest are not dependent on one another.<br \/>\n(iii) Forests influence the climate and water cycle.<br \/>\n(iv) Soil helps forests to grow and regenerate.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211; <\/strong>(ii) Plants and animals in a forest are not dependent on one another \u2013 is incorrect<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>13. Micro-organisms act upon the dead plants to produce<br \/>\n<\/strong>(i) sand<br \/>\n(ii) mushrooms<br \/>\n(iii) humus<br \/>\n(iv) wood<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>(iii) humus<\/span><\/p>\n<table style=\"width: 100%; border-collapse: collapse;\" border=\"1\">\n<tbody>\n<tr>\n<td style=\"width: 100%; background-color: #f2e079; text-align: center;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong>NCERT Class 7<sup>th\u00a0<\/sup>Solution\u00a0<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-english\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 English\u201d (Edit)\">NCERT Solutions Class 7 English<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-hindi\/\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 7 Hindi<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-maths\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 7 Mathematics<\/a>\u00a0<\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-sanskrit-ruchira\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\">NCERT Solutions Class 7 Sanskrit<\/span><\/strong><\/span><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 7 Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-social-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 7 Social Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions Class 7 Science\u00a0 The NCERT Solutions in English Language for Class 7 Science Chapter &#8211; 17 (Forests: Our Lifeline) has been provided here to help the students in solving the questions from this exercise. Chapter &#8211; 17 (Forests: Our Lifeline) 1. Explain how animals dwelling in the forest help it grow and regenerate. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[292],"tags":[332,333,295,5],"class_list":["post-2341","post","type-post","status-publish","format-standard","hentry","category-class-7-science","tag-ncert-class-7-science-chapter-17-forests-our-lifeline-in-english","tag-ncert-solutions-class-7-science-chapter-17-in-english","tag-ncert-solutions-class-7-science-in-english","tag-ncert-solutions-in-english"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.9 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Solutions Class 7 Science Chapter 17 Forests: Our Lifeline | TheExamPillar NCERT<\/title>\n<meta name=\"description\" content=\"NCERT Solutions Class 7 Science\u00a0The NCERT Solutions in English Language for Class 7 Science Chapter - 17 (Forests: Our Lifeline) has been provided here to help the students in solving the questions from this exercise.Chapter - 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