{"id":18996,"date":"2020-11-19T09:44:26","date_gmt":"2020-11-19T09:44:26","guid":{"rendered":"https:\/\/samacheer-kalvi.com\/?p=18996"},"modified":"2021-12-06T16:02:19","modified_gmt":"2021-12-06T10:32:19","slug":"samacheer-kalvi-5th-science-guide-term-1-chapter-1","status":"publish","type":"post","link":"https:\/\/samacheer-kalvi.com\/samacheer-kalvi-5th-science-guide-term-1-chapter-1\/","title":{"rendered":"Samacheer Kalvi 5th Science Guide Term 1 Chapter 1 Organ System"},"content":{"rendered":"

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide<\/a> Pdf Term 1 Chapter 1 Organ System Text Book Back Questions and Answers, Notes.<\/p>\n

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 1 Chapter 1 Organ System<\/h2>\n

Samacheer Kalvi 5th Science Guide Organ System Text Book Back Questions and Answers<\/h3>\n

Evaluation<\/span><\/p>\n

I. Choose the Correct Answer:<\/span><\/p>\n

Question 1.
\nWhat is the length of the alimentary canal?
\na) 3-5 m
\nb) 5-6 m
\nc) 9-11 m
\nd) 6-9 m
\nAnswer:
\nd) 6-9 m<\/p>\n

Question 2.
\nWhich organ is involved in respiration?
\na) Kidney
\nb) Lungs
\nc) Heart
\nd) Brain
\nAnswer:
\nb) Lungs<\/p>\n

Question 3.
\nHow many kidneys do we have?
\na) 2
\nb) 3
\nc) 1
\nd) 4
\nAnswer:
\na) 2<\/p>\n

\"Samacheer<\/p>\n

Question 4.
\nFunctional unit of brain is
\na) Neuron
\nb) Nephron
\nc) Brain stem
\nd) Nerves
\nAnswer:
\na) Neuron<\/p>\n

Question 5.
\nBlood is bumped by
\na) Lungs
\nb) Heart
\nc) Kidneys
\nd) Bones
\nAnswer:
\nb) Heart<\/p>\n

\"Samacheer<\/p>\n

II. Fill in the blanks:<\/span><\/p>\n

Question 1.
\nA group of organs together make up an _______ system.
\nAnswer:
\norgan system<\/p>\n

Question 2.
\nThe process by which the body removes waste is called _______.
\nAnswer:
\nExcretion<\/p>\n

Question 3.
\nThe number of chambers in human heart is _______.
\nAnswer:
\nFour<\/p>\n

Question 4.
\nThe functional unit of kidney is _______.
\nAnswer:
\nNephron<\/p>\n

Question 5.
\nThe human nervous system is divided into _______ parts.
\nAnswer:
\nTwo<\/p>\n

\"Samacheer<\/p>\n

III. Say True or False:<\/span><\/p>\n

Question 1.
\nThe circulatory system is made up of the heart, blood, and blood vessels.
\nAnswer:
\nTrue<\/p>\n

Question 2.
\nImportant function of the heart is to transport blood with nutrients, oxygen, waste, and hormones.
\nAnswer:
\nTrue<\/p>\n

Question 3.
\nThe brain is protected by the rib cage.
\nAnswer:
\nFalse<\/p>\n

Question 4.
\nThe functional unit of kidney is neuron.
\nAnswer:
\nFalse<\/p>\n

\"Samacheer<\/p>\n

IV. Circle the odd one:<\/span><\/p>\n

Question 1:<\/p>\n

\"Samacheer
\nAnswer:
\n\"Samacheer<\/p>\n

\"Samacheer<\/p>\n

V. Match the following:<\/span><\/p>\n

\"Samacheer
\nAnswer:<\/p>\n

    \n
  1. C<\/li>\n
  2. e<\/li>\n
  3. d<\/li>\n
  4. a<\/li>\n
  5. b<\/li>\n<\/ol>\n

    \"Samacheer<\/p>\n

    VI. Answer briefly:<\/span><\/p>\n

    Question 1.
    \nName the salivary glands in our mouth?
    \nAnswer:
    \nThe three parts of salivary glands in our mouth are parotid, sublingual and submandibular glands.<\/p>\n

    Question 2.
    \nWhat is respiration?
    \nAnswer:
    \nThe process of providing oxygen to the tissues of the body and removing carbon dioxide from the tissues is called respiration.<\/p>\n

    Question 3.
    \nWhat is the function of pericardial fluid?
    \nAnswer:
    \nThe space between the membranes is filled with pericardial fluid. This fluid protects the heart from shock.<\/p>\n

    Question 4.
    \nName the chambers in human heart?
    \nAnswer:
    \nThe heart is divided into four chambers. Two upper chambers are called atria or auricles. Two lower thicker chambers are called ventricles. The upper and lower chambers are separated by a muscular wall or tissue known as auriculo-ventricular septum of the heart.<\/p>\n

    Question 5.
    \nArrange the excretory system in correct sequence.
    \n(Urinary bladder, Ureter, Kidney, Urethra).
    \nAnswer:
    \nKidney, Ureter, Urinary bladder, Urethra.<\/p>\n

    \"Samacheer<\/p>\n

    Question 6.
    \nWhat are the two parts of peripheral nervous system?
    \nAnswer:
    \nPeripheral nervous system consists of nerves extending from spinal cord to all parts of the body. It is made up of 2 parts.<\/p>\n

      \n
    • Somatic nervous system<\/li>\n
    • Autonomous nervous system.<\/li>\n<\/ul>\n

      Question 7.
      \nWhat are the functions of blood?
      \nAnswer:<\/p>\n

        \n
      • Blood transports nutrients, oxygen, wastes, and hormones.<\/li>\n
      • It regulates the water level and body temperature.<\/li>\n
      • It takes oxygen to tissues and cells finally reaches the lungs to take oxygen again.<\/li>\n<\/ul>\n

        \"Samacheer<\/p>\n

        VII. Answer in detail:<\/span><\/p>\n

        Question 1.
        \nList out the functions of the digestive system.<\/p>\n

        Answer:<\/p>\n

          \n
        • The process of conversion of complex food molecules into simpler molecules is called digestion.<\/li>\n
        • Saliva moistens food.<\/li>\n
        • Salivary enzymes which break down complex starch into simple carbohydrate molecules.<\/li>\n
        • Digestive enzymes are used for digesting fats, proteins, and carbohydrates.<\/li>\n<\/ul>\n

          Question 2.
          \nExplain the main parts of the circulatory system.
          \nAnswer:<\/p>\n

            \n
          • In circulatory system, Blood is circulated to transport oxygen and nutrients to every part of the body through circulatory system.<\/li>\n
          • Circulatory system consists of the\n
              \n
            1. Heart<\/li>\n
            2. Blood<\/li>\n
            3. Blood Vessels<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n

              1. Heart:<\/p>\n

                \n
              • The heart is a hollow, muscular organ conical in shape.<\/li>\n
              • It is covered by a double walled pericardium membrane, filled with pericardial fluid.<\/li>\n
              • This fluid protects the heart from shock.<\/li>\n
              • Heart is placed inside the rib cage between the two lungs.<\/li>\n
              • Heart has 4 chambers, the two upper chambers called auricles.<\/li>\n
              • The two lower thicker chambers called ventricles.<\/li>\n
              • The upper and lower chambers of the heart are separated by muscular wall known as auriculo-ventricular septum.<\/li>\n
              • The right side of the heart receives de-oxygenated blood from various parts of body and pumped to the lungs for oxygenation.<\/li>\n
              • The left side of the heart receives oxygenated blood from the lungs and pumps to different parts of the body.<\/li>\n<\/ul>\n

                \"Samacheer<\/p>\n

                2. Blood:<\/p>\n

                  \n
                • It transports nutrients’ oxygen, wastes and hormones.<\/li>\n
                • It regulates the water level and body temperature.<\/li>\n
                • Blood pumped through out the body by the heart.<\/li>\n
                • It takes oxygen to the tissues and cells from the lungs.<\/li>\n<\/ul>\n

                  3. Blood vessels:
                  \nBlood vessels consists of arteries and veins. Arteries carry oxygenated blood except pulmonary arteries which carries deoxygenated blood from the heart vein carries deoxygenated blood except pulmonary veins which carries oxygenated blood to heart.<\/p>\n

                  Question 3.
                  \nExplain three major parts of human brain.
                  \nAnswer:
                  \nHuman brain is divided into 3 major parts.<\/p>\n

                    \n
                  1. Fore Brain (Cerebrum)<\/li>\n
                  2. Mid Brain (Cerebellum)<\/li>\n
                  3. Hind Brain (Medulla Oblongata)<\/li>\n<\/ol>\n

                    1. Fore Brain – Cerebrum
                    \nThe fore brain consists of cerebrum, thalamus and hypothalamus.<\/p>\n

                      \n
                    • It is the largest part of the brain.<\/li>\n
                    • It is the centre of human memory.<\/li>\n
                    • It is responsible for intelligence, imagination and reasoning.<\/li>\n<\/ul>\n

                      2. Mid Brain – Cerebellum<\/p>\n

                        \n
                      • It lies behind the cerebrum.<\/li>\n
                      • It co-ordinates the movements of the muscules of body.<\/li>\n
                      • It helps to maintain the balance of the body.<\/li>\n<\/ul>\n

                        3. Hind Brain – Medulla Oblongata<\/p>\n

                          \n
                        • The hind brain comprises of pons and medulla oblongata.<\/li>\n
                        • It is also called the brain stem.<\/li>\n
                        • It controls breathing, heartbeat, and other involuntary muscles, so it is called “Vital Knot”.<\/li>\n
                        • It connects the brain to the spinal cord.<\/li>\n<\/ul>\n

                          \"Samacheer<\/p>\n

                          Question 4.
                          \nLabel the diagram given below.<\/p>\n

                          \"Samacheer
                          \nAnswer:
                          \n\"Samacheer<\/p>\n

                          VIII. Questions based on higher order thinking (HOT):<\/span><\/p>\n

                          Question 1. Why It is important to wear helmet while riding a bike?
                          \nAnswer:
                          \nWearing helmet helps to protect your life and protect your head from danger. The head and brain is the most vulnerable to injury in a motorcycle accident. Drivers and passengers wearing helmets increase their chances of survival over non-helmet wearers. Riders who do not wear helmets are at risk of suffering a traumatic brain injury, if they are in accident. Brain trauma often results in spinal cord injuries and disability that requires extended care and physical therapy. The damaged brain may deteriorate after hospitalization and die days to weeks after the injury due to secondary injury.<\/p>\n

                          Question 2.
                          \nEating fast-food and junk food affects our health. Justify.
                          \nAnswer:<\/p>\n

                            \n
                          • Fast food is usually higher in fat, calories cholesterol, and sodium in comparison to homemade meals.<\/li>\n
                          • Eating too much fast food can increase the risk for health problems such as high blood pressure, heart disease, and obesity.<\/li>\n
                          • Eating a poor quality diet high in junk food is linked to a higher risk of obesity, depression, digestive issues, heart diseases and stroke, type 2 diabetes, cancer, and early death.<\/li>\n<\/ul>\n

                            \"Samacheer<\/h3>\n

                            Samacheer Kalvi 5th Science Guide Organ System Additional Questions and Answers<\/h3>\n

                            I. Choose the Correct Answer:<\/span><\/p>\n

                            Question 1.
                            \nThe brain is kept in a bony case called
                            \na) Cranium
                            \nb) Cerebellum
                            \nc) Cerebrum
                            \nd) Medulla Oblongata
                            \nAnswer:
                            \na) Cranium<\/p>\n

                            Question 2.
                            \nThe left side of the heart receives oxygenated blood from
                            \na) Lung
                            \nb) Heart
                            \nc) Liver
                            \nd) Kidney
                            \nAnswer:
                            \na) Lung<\/p>\n

                            Question 3.
                            \nName the functional unit of brain
                            \na) Neurons
                            \nb) Nephrons
                            \nc) Fibrous membrane
                            \nd) Capsule
                            \nAnswer:
                            \na) Hind Brain<\/p>\n

                            Question 4.
                            \nThe brain loses the ability to function when it does not get oxygen for more than.
                            \na) 2 minutes
                            \nb) 3 minutes
                            \nc) 4 minutes
                            \nd) 5 minutes
                            \nAnswer:
                            \n4 minutes<\/p>\n

                            Question 5.
                            \nThe volume of blood in human adults is _______.
                            \na) 4-5 litres
                            \nb) 5-6 litres
                            \nc) 3-5 litres
                            \nd) 4-8 litres
                            \nAnswer:
                            \na) 4-5 litres<\/p>\n

                            Question 6.
                            \nThe volume of blood in human adults is _______.
                            \na) 4-5 litres
                            \nb) 5-6 litres
                            \nc) 3-5 litres
                            \nd) 4-8 litres
                            \nAnswer:<\/p>\n

                            a) 4-5 litres<\/p>\n

                            \"Samacheer<\/p>\n

                            Question 7.
                            \nHeart \u00a1s covered with double walled membrane called
                            \na) cerebrum
                            \nb) Cerebellum
                            \nc) pericardium
                            \nd) rib cage
                            \nAnswer:
                            \nc) pericardium<\/p>\n

                            Question 8.
                            \n____________ carries sensation\u2019s from the organs to the brain.
                            \na) Somatic nervous system
                            \nb) Autonomous nervous system
                            \nc) Central nervous system
                            \nd) Spinal cord
                            \nAnswer:
                            \nSomatic nervous system<\/p>\n

                            Question 9.
                            \n____________ is the largest part of the brain.
                            \na) Fore Brain
                            \nb) Mid Brain
                            \nc) Hind Brain
                            \nd) Centre Brain
                            \nAnswer:
                            \na) Fore Brain<\/p>\n

                            Question 10.
                            \nMedulla oblongata is called as
                            \na) pia meter
                            \nb) durameter
                            \nc) vital knot
                            \nd) pons verolli
                            \nAnswer:
                            \nc) vital knot<\/p>\n

                            Question 11.
                            \nWhich of the following statement is correct about cerebellum?
                            \na) It is the largest part of the brain
                            \nb) It co-ordinates the movements of the muscles of the body.
                            \nc) It controls involuntary action
                            \nd) It lies behind the cerebrum
                            \nAnswer:
                            \nBoth (b) and (d)<\/p>\n

                            \"Samacheer<\/p>\n

                            II. Fill in the blanks:<\/span>
                            \nQuestion 1.
                            \nSalivary glands secrete _______.
                            \nAnswer:
                            \nsaliva<\/p>\n

                            Question 2.
                            \nName the organism which lives in the digestive system of human _______.
                            \nAnswer:
                            \nTapeworm<\/p>\n

                            Question 3.
                            \nLiver produces for the digestion of fat.
                            \nAnswer:
                            \nBile<\/p>\n

                            Question 4.
                            \n________ is sac – like in shape.
                            \nAnswer:
                            \nUrinary bladder<\/p>\n

                            Question 5.
                            \nKidneys receive approximately ________ litres of blood.
                            \nAnswer:
                            \n250 liter<\/p>\n

                            Question 6.
                            \nThe kidneys are made up of millions of excretory units called _______.
                            \nAnswer:
                            \nNephrons<\/p>\n

                            III. Say True or False:<\/span><\/p>\n

                            Question 1.
                            \nLiver transport nutrients, oxygen, wastes, and hormones.
                            \nAnswer:
                            \nFalse<\/p>\n

                            Question 2.
                            \nBlood vessels consist of arteries and veins.
                            \nAnswer:
                            \nTrue<\/p>\n

                            Question 3.
                            \nCrab has blue blood.
                            \nAnswer:
                            \nTrue<\/p>\n

                            Question 4.
                            \nAutonomous nervous system carries sensation from the organs_______ to the brain.
                            \nAnswer:
                            \nTrue<\/p>\n

                            Question 5.
                            \nAverage weight of human brain \u00a1s 2.3 kg.
                            \nAnswer:
                            \nFalse<\/p>\n

                            Question 6.
                            \nBrain is made up of eight immovable bones.
                            \nAnswer:
                            \nTrue<\/p>\n

                            Question 7.
                            \nFore brain lies behind the cerebrum.
                            \nAnswer:
                            \nFalse<\/p>\n

                            Question 8.
                            \nFore brain is the centre of human memory.
                            \nAnswer:
                            \nTrue<\/p>\n

                            \"Samacheer<\/p>\n

                            IV. Circle the odd one out:<\/span><\/p>\n

                            Question 1.
                            \n(a) Heart
                            \n(b) Blood vessels
                            \n(c) Airway
                            \n(d) Pancreatic juice
                            \nAnswer:
                            \n(d) Pancreatic juice<\/p>\n

                            Question 2.
                            \n(a) Air way
                            \n(b) Lungs
                            \n(c) Liver
                            \n(d) Muscles of respiration
                            \nAnswer:
                            \n(c) Liver<\/p>\n

                            Question 3.
                            \n(a) pancreatic juice
                            \n(b) Bile
                            \n(c) Digestive enzymes
                            \n(d) paracardial fluid
                            \nAnswer:
                            \n(d) paracardial fluid<\/p>\n

                            Question 4.
                            \n(a) Nasal cavity
                            \n(b) Pharynx
                            \n(c) Nostrils
                            \n(d) Pancreas
                            \nAnswer:
                            \n(d) Pancreas<\/p>\n

                            Question 5.
                            \n(a) Dura mater
                            \n(b) Cranium
                            \n(c) Arachnoid membrane
                            \n(d) Pia meter
                            \nAnswer:
                            \n(b) Cranium<\/p>\n

                            Question 6.
                            \n(a) Pharynx
                            \n(b) Larynx
                            \n(c) bronchi
                            \n(d) Arteries
                            \nAnswer:
                            \n(d) Arteries<\/p>\n

                            \"Samacheer<\/p>\n

                            V. Match the following:<\/span><\/p>\n

                            Question 1.<\/p>\n

                            \"Samacheer
                            \nAnswer:<\/p>\n

                              \n
                            1. d<\/li>\n
                            2. a<\/li>\n
                            3. b<\/li>\n
                            4. c<\/li>\n<\/ol>\n

                              Question 2.<\/p>\n

                              \"Samacheer
                              \nAnswer:<\/p>\n

                                \n
                              1. b<\/li>\n
                              2. a<\/li>\n
                              3. d<\/li>\n
                              4. c<\/li>\n<\/ol>\n

                                \"Samacheer<\/p>\n

                                VI. Answer briefly:<\/span><\/p>\n

                                Question 1.
                                \nWhat is digestion?
                                \nAnswer:
                                \nThe process of conversion of complex food molecules into simpler molecules is called digestion.<\/p>\n

                                Question 2.
                                \nWhat are the compounds present in the food?
                                \nAnswer:
                                \nThe food contain complex compounds like carbohydrates, proteins and fats.<\/p>\n

                                Question 3.
                                \nMention the 3 important digestive glands in the process of digestion?
                                \nAnswer:
                                \nThree important digestive glands in the process of digestion are:<\/p>\n

                                  \n
                                • Salivary glands<\/li>\n
                                • Pancreas<\/li>\n
                                • Liver.<\/li>\n<\/ul>\n

                                  Question 4.
                                  \nWhy do we eat?
                                  \nAnswer:
                                  \nFood contains sources of energy that the body needs to stay alive and to repair itself.<\/p>\n

                                  \"Samacheer<\/p>\n

                                  Question 5.
                                  \nWhat happens when we swallow our food?
                                  \nAnswer:<\/p>\n

                                    \n
                                  • Our tongue squeezes off a portion and pushes down into your throat to the top of the esophagus.<\/li>\n
                                  • When we swallow muscular waves push the food along the digestive tract from the mouth down the esophagus to the stomach.<\/li>\n
                                  • \u00a0From the stomach, it moves on to the small and large intestine.<\/li>\n<\/ul>\n

                                    Question 6.
                                    \nWhat are the most important toxic gases in smoke?
                                    \nAnswer:
                                    \nSmoke contains many toxic gases. The most common is carbon monoxide.<\/p>\n

                                    Question 7.
                                    \nWhat is the primary organ of the respiratory system?
                                    \nAnswer:
                                    \nThe lungs are the primary organs of the respiratory system. They are paired cone-shaped organs. They are located near the backbone on both sides of the heart.<\/p>\n

                                    Question 8.
                                    \nName the muscles of respiration?
                                    \nAnswer:
                                    \nMuscles of respiration include diaphram and intercostal muscles.<\/p>\n

                                    \"Samacheer<\/p>\n

                                    VII. Answer in detail:<\/span><\/p>\n

                                    Question 1.
                                    \nDraw a flow chart to explain the function of digestive system in human being.
                                    \nAnswer:<\/p>\n

                                    \"Samacheer<\/p>\n

                                    \"Samacheer<\/p>\n

                                    Question 2.
                                    \nDraw and label the parts for the structure of kidney.
                                    \nAnswer:
                                    \n\"Samacheer<\/p>\n

                                    \"Samacheer<\/p>\n

                                    Question 3.
                                    \nExplain the structure of heart.
                                    \nAnswer:<\/p>\n

                                      \n
                                    • The heart \u00a1s a hollow, muscular organ. It \u00a1s conical \u00a1n shape.<\/li>\n
                                    • It \u00a1s covered with double walled membrane called pericardiurn.<\/li>\n
                                    • The space between themembranes is filled with pericardial fluid. .<\/li>\n
                                    • The pericardial fluid protects the heart from shock.<\/li>\n
                                    • Heart \u00a1s placed inside the thoracic chamber (rib cage) \u00a1n between the two lungs.<\/li>\n
                                    • The heart \u00a1s divided into four chambers.<\/li>\n
                                    • Two upper chambers are called atrio or auricles.<\/li>\n
                                    • Two lower thicker chambers are called ventricles.<\/li>\n
                                    • The upper and lower chambers of the heart are separated by a muscular wall or tissue known as the auriculo-ventricular septum of the heart.<\/li>\n
                                    • The right side of the heart receives deoxygenated blood from various parts of the body and pumps it to the lungs for
                                      \noxygenation.<\/li>\n
                                    • The left side of the heart receives oxygenated blood from the lungs and pumps it into different parts of the body.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                                      Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 1 Chapter 1 Organ System Text Book Back Questions and Answers, Notes. Tamilnadu Samacheer Kalvi 5th Science Solutions Term 1 Chapter 1 Organ System Samacheer Kalvi 5th Science Guide Organ System Text Book Back Questions and Answers Evaluation I. Choose the Correct Answer: …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[8],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/posts\/18996"}],"collection":[{"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/comments?post=18996"}],"version-history":[{"count":1,"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/posts\/18996\/revisions"}],"predecessor-version":[{"id":48246,"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/posts\/18996\/revisions\/48246"}],"wp:attachment":[{"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/media?parent=18996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/categories?post=18996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samacheer-kalvi.com\/wp-json\/wp\/v2\/tags?post=18996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}