Ncert class 7 science book chapter 10 pdf

[Pages:3]Continue

Ncert class 7 science book chapter 10 pdf

NCERT Books & NCERT SolutionsCBSESSC ? UPSCState Boards (A-L)State Boards (M-Z) [Total: 24 Average: 4.4]NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms is crucial for the students of the 7th standard. The solutions are provided here to help students understand the chapter in an interesting way. These NCERT Solutions for chapter 10 of class 7 Science are created by subject experts according to the latest CBSE syllabus. Students must practice the solutions regularly to prepare effectively for their examination. NCERT Solutions for Class 7 Science Chapter 10 by Swiflearn are by far the best and most reliable NCERT Solutions that you can find on the internet. These NCERT Solutions for Class 7 Science Chapter 10 are designed as per the CBSE Class 7 Science Syllabus. These NCERT Solutions will surely make your learning convenient & fun. Students can also Download FREE PDF of NCERT Solutions Class 7 Science Chapter 10. NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms PDF 1. Why does an athlete breathe faster and deeper than usual after finishing the race? Solution: An athlete requireda lot of energy during the race.To release the energy, the muscles need a lot of oxygen. So to take more amount of oxygen an athlete breathes faster and deeper than usual after finishing the race. 2. List the similarities and differences between aerobic and anaerobic respiration. Solution: Similarities between aerobic and anaerobic respiration: Food particles are broken down into fine constituents in both types of respiration. Differences between aerobic and anaerobic respiration: Aerobic respiration Anaerobic respiration Takes place in the presence of oxygen Takes place in the absence of oxygen CO2 and H2O are the end products CO2 and alcohol are the end products Large amount of energy is produced Energy produced is less compared to aerobic respiration Occurs in most plants and animals Occurs in yeasts and some bacteria 3. Why do we often sneeze when we inhale a lot of dust-laden air? Solution: When we inhale a lot of dust-laden air, there is an irritation sensation in the nose. As a reflexive action dust is thrown out through sneezing. NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms are part of NCERT Solutions for Class 7 Science. Here we have given NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms. Board CBSE Textbook NCERT Class Class 7 Subject Science Chapter Chapter 10 Chapter Name Respiration in Organisms Number of Questions Solved 9 Category NCERT Solutions Question 1. Why does an athlete breathe faster and deeper than usual after finishing the race? Solution: An athlete requires more energy during and after the race. Since demand for energy is high, so oxidation of food must be speeded up. This requires more oxygen to be supplied. This is why an athlete not only breathes fast but also takes deep breathes and thus inhales more oxygen. Question 2. List the similarities and differences between aerobic and anaerobic respiration. Solution: Similarities: Energy is released Carbon dioxide is produced. Differences: Anaerobic respiration does not require oxygen while areobic respiration takes place in the presence of oxygen. Glucose is completely broken down in aerobic respiration but not in anaerobic respiration. Question 3. Why do we often sneeze when we inhale a lot of dust-laden air? Solution: When we inhale dust particles, pollens, etc., the particles get trapped in the hair present in our nasal cavity. However, sometimes these particles may pass the hair in the nasal cavity, where they irritate the lining of the cavity, as a result of which we sneeze. Sneezing expels these foreign particles from the inhaled air and dust-free, clean air enters our body. Question 4. Take three test-tubes. Fill 1/3 rd of each with water. Label them A, B and C. Keep a snail in the test-tube A, a water plant in test-tube B, and in C, keep snail and plant both. Which test -tube would have the highest concentration of CO2? Solution: Test-tube A will have the highest concentration of CO2 because a snail will tape in oxygen and gives out CO2. In test-tube B and C, the CO2 will be utilized by the water plant for synthesizing food, and hence there will be less concentration of CO2 in there. Question 5. Tick the correct answer : (a) In cockroaches, air enters the body through (i) lungs (ii) gills (iii) spiracles (iv) skin (b) During heavy exercise, we get cramps in the legs due to the accumulation of (i) carbon dioxide (ii) lactic acid (iii) alcohol (iv) water (c) Normal range of breathing rate per minute in an average adult person at rest is : (i) 9-12 (ii) 15-18 (iii) 21-24 (iv) 30-33 (d) During exhalation, the ribs (i) move outwards (ii) move downwards (iii) move upwards (iv) do not move at all Solution: (a)-(iii) (b)-(ii) (c)-(ii) (d)-(ii). Question 6. Match the items in Column I with those in Column II: Column I Column II (a) Yeast (i) Earthworm (b) Diaphragm (ii) Gills (c) Skin (iii) Alcohol (d) Leaves (iv) Chest cavity (e) Fish (v) Stomata (f) Frog (vi) Lungs and skin (vii) Tracheae Solution: (a)-(iii) (b)-(iv) (c)-(i) (d)-(v) (e)-(ii) (f)-(vi). Question 7. Mark `T' if the statement is True and `F' if it is False: During heavy exercise, the breathing rate of a person slows down. (T/F) Plants carry out photosynthesis only during the day and respiration only at night. (T/F) Frogs breathe through their skins as well as their lungs. (T/F) The fishes have lungs for respiration.(T/F) The size of the chest cavity increases during inhalation. (T/F) Solution: Question 8. Given below is a square of letters in which different words related to respiration in organisms are hidden. These words may be present in any direction--upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square. The air tubes of insects Skeletal structures surrounding the chest cavity The muscular floor of the chest cavity Tiny pores on the surface of the leaf Small openings on the sides of the body of an insect The respiratory organs of human beings The openings through which we inhale An anaerobic organism An organism with a tracheal system Solution: Question 9. The mountaineers carry oxygen with them because : (a) At an altitude of more than 5 km, there is no air. (b) The amount of air available to a person is less than that available on the ground. (c) The temperature of the air is higher than that on the ground. (d) The pressure of air is higher than that on the ground. Solution: (b) The amount of air available to a person is less than that available on the ground. We hope the NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms help you. If you have any query regarding NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms, drop a comment below and we will get back to you at the earliest. Check the below NCERT MCQ Questions for Class 7 Science Chapter 10 Respiration in Organisms with Answers Pdf free download. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. We have Provided Respiration in Organisms Class 7 Science MCQs Questions with Answers to help students understand the concept very well. You can refer to NCERT Solutions for Class 7 Science Chapter 10 Respiration in Organisms to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Respiration in Organisms Class 7 MCQs Questions with Answers Choose the correct answer: Question 1. Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process? (a) alcohol and lactic acid (b) alcohol and CO2 (c) lactic acid and CO2 (d) lactic acid only Answer Answer: (d) lactic acid only Question 2. Yeast is used in wine and beer industries because it respires. (a) aerobically producing oxygen (b) aerobically producing alcohol (c) anaerobically producing alcohol (d) anaerobically producing CO2 Answer Answer: (c) anaerobically producing alcohol Question 3. During the process of exhalation, the ribs move (a) down and inwards (b) up and inwards (c) down and outwards (d) up and outward Answer Answer: (a) down and inwards Question 4. Breathing is a process that (i) provides O2 to the body. (ii) breaks down food to release energy. (iii) helps the body to get rid of CO2 (iv) produces water in the cells. Which of the following gives the correct combination of functions of breathing? (a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iii) (d) (ii) and (iv) Answer Answer: (c) (i) and (iii) Question 5. Which are the gases involved in breathing? (a) O2 and NO2 (b) O2 and SO2 (c) O2 and O3 (d) O2 and CO2 Answer Answer: (d) O2 and CO2 Question 6. Name the organ of the body in which the blood is oxygenated. (a) Heart (b) Lungs (c) Lever (d) Pancreas Answer Answer: (b) Lungs Question 7. After heavy exercise, due to the accumulation of which substance we get muscle cramps ? (a) Malaic acid (b) Fumaric acid (c) Lipoic acid (d) Lactic acid Answer Answer: (d) Lactic acid Question 8. Yeasts are used in (a) wine and beer industry (b) bakery (c) in both (d) none of these Answer Answer: (a) wine and beer industry Question 9. In the following figure of respiratory system organs labelled by 1 and 2 are respectively: (a) Tracheae, Lungs (b) Lungs, Tracheae (c) Nasal cavity, Lungs (d) Lungs, Nasal cavity Answer Answer: (a) Tracheae, Lungs Question 10. Breathing rate in human beings in normal condition is (a) 12-15 times in a minute (b) 15-18 times in a minute (c) 18-22 times in a minute (d) 22-25 times in a minute Answer Answer: (b) 15-18 times in a minute Match the following: Column A Column B (i) Unicellular organisms (a) Skin (ii) Plants (b) Spiracles (iii) Earthworm, Leech (c) Cell membrane (iv) Insects (d) Lungs, skin (v) Frog (e) Stomata (vi) Mammals (f) Gills (vii) Fish (g) Lungs Answer Answer: Column A Column B (i) Unicellular organisms (c) Cell membrane (ii) Plants (e) Stomata (iii) Earthworm, Leech (a) Skin (iv) Insects (b) Spiracles (v) Frog (d) Lungs, skin (vi) Mammals (g) Lungs (vii) Fish (f) Gills Fill in the blanks 1. In higher animals, respiration occurs through ................... Answer Answer: lungs 2. The food has ................... which is released during ................... Answer Answer: stored energy, respiration 3. Yeasts can survive in the absence of air. They are called ................... Answer Answer: anaerobes 4. The accumulation of ................... causes muscle cramps. Answer Answer: lactic acid 5. The taking in of air rich in oxygen into body is called ................... Answer Answer: inhalation 6. Breathing involves the movement of the ................... and the ................... Answer Answer: diaphragm, ribcage Choose the true and false statements from the following: 1. All living organisms respire to get energy from food. Answer Answer: True 2. Cellular respiration takes place in the cells of all organisms. Answer Answer: True 3. Muscles can also respire anaerobically. Answer Answer: True 4. During heavy exercise the breathing rate declines. Answer Answer: False 5. Breathing involves the upward movement of the diaphragm. Answer Answer: False 6. The percentage of carbon dioxide is higher in exhaled air in comparison to inhaled air. Answer Answer: True 7. Roots take up air from the air spaces present between the soil particles. Answer Answer: True We hope the given NCERT MCQ Questions for Class 7 Science Chapter 10 Respiration in Organisms with Answers Pdf free download will help you. If you have any queries regarding Respiration in Organisms CBSE Class 7 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. Class 7 Science Notes Chapter 10 Respiration in Organisms Class 7 Science Notes. Chapter 10 Respiration in Organisms. PDF Download Free. CBSE Educational Study Material PDF Telangana SCERT Class 7 Science Chapter 10 Solution ? Nutrition In Plants. Here in this post we provides Class 7 Science Nutrition In Plants Telangana State Board Solution. Telangana State Board English Class VII Medium Students can download this Solution to Solve out Improve Your Learning Questions and Answers. Telanagana State Board Class 7 Science Chapter 10 Nutrition In Plants Solution: Question 1: A potted plant is kept in light for a day and one its leaves is tested for starch. The same plant is kept in the dark for two days and another leaf is tested for starch. Will there be a difference in the results of the two experiments? Give reasons for your answer. Ans: ? Yes, there will be show a difference in the results of the two experiments. In first case potted plant is kept in light for a day. As we know green parts of plants use carbon dioxide in the presence of sunlight (as well as other sources of light) along with water to make glucose, starch and other food materials. So in this case the potted plant does not make starch because it kept in dark, so there is no light from which help the plant make starch with the presence of light and carbon dioxide. That means effect of light has on the formation of starch in leaves. Question 2: What happens if leaves a green plant are coated with oil? (Hint: What will be the effect on stomata) Ans: ? The leaves have tiny holes through which the exchange of air (gaseous exchange) takes place. These holes are called stomata. If leaves of a green plant are coated with oil, then all the stomata which present on the surface of the leaf will get blocked. So, if stomata are blocked, there would be no air or gaseous exchange happend and it effects on photosynthesis process of green plant. May be the plant will be dies slowly. Question 3: Do you think saprophytes help us in keeping the environment clean? (Hint: What do saprophytes feed on?) Ans: ? After rains, we find umbrella like structure growing on dead and decaying matter. These plants are called saprophytes. All these types of plants simply absorb organic material usually from decaying matter. It breaks down the dead and decaying organic matter into simple matter, and it can be taken up and recycled by the plants. Thus saprophytes help us in keeping the environment clean. Question 4: Differentiate between following with some examples. (i) Parasite and saprophyte (ii) Host and Parasite Ans: ? (i) Parasite plants develop their special roots, which penetrate into the tissue of the host plant and observe food materials from them. Saprophytes growing on dead and decaying matter and they absorb organic material usually from decaying matter. Parasitic plants are depend on living host. But saprophyte does not depend on living host. Parasite harms the organism, but saprophytes does not harm organism because they growing on dead matter. Parasite can be plants or animals. (ii) The organisms from which a parasite takes its nutrients is called as host. It is an organism that lives in or on the body of another organism and takes its nutrients from it is called a parasite. It absorbs food materials from host. Question 5: Fill in the blanks and give reasons (i) Lenticels are present on ____ in plants. Ans: ? Stem. Reasons: Lenticels are present on stem in the plants and it helps in the gaseous exchange between the atmosphere and the tissue which stays in the stem. (ii) The food synthesized by the plants is stored as _____ Ans: Starch Reasons: Green plants use carbon dioxide in the presence of sunlight to make starch, and other food materials. (iii) Saprophytes depend on _________ for food. Ans: ? Saprophytes growing on dead and decaying matter and absorb organic material from decaying mater as their food. Question 6: Name the following (i) Pores through which leaves exchange gases. Ans: ? The pores through which leaves exchange gases are called Stomata. (ii) Plants that act as scavenger of nature. Ans: ? Saprophytes. (iii) Those plants that share food and shelter. Ans: ? lichen and fungus. (iv) Plants which cannot make their own food and obtain it from host. Ans: ? Parasite, or Hetrotrophs. Question 7: Tick the correct answer (i) Cuscuta is an example of Ans: ? (b) Parasite (ii) Hautoria are Ans: ? (a) Root (iii) Raw materials involved in the process of photosynthesis Ans: ? (d) all of them Question 8: Circle the insectirous plant among the plants given below Ans: ? (c) Nepanthis Question 11: Why are some plants called insectivorous plants? Give reasons/ Ans: ? Droseras, Uticularia, Venusflytrap are some examples of insectivorous. This plants manufacture their own food but obtain a part of their nutrition from insect. Leaves of these plants trap insectects. These plants grown in areas deficient in nitrogen. Hence they meet their nitrogen requirements from insects. That's why these plants are called insectivorous. Question 14: Prathima sais "Mushroom is also a plant" is she correct? How would you supports her? Ans: ? Mushroom is fungi. Mushrooms contain no crosophy . Most of them are known as saprophytes. So Mushrooms are not plants. They obtain their nutrition from non living organic matter. Hence, we can say Mushroom is not a plant, because they can't make their own food and it does not contain chlorophyll. Question 15: Photosynthesis is the way plants make food in every leaf by using different items. Write your fellings on this. Ans: ? Plants make their own food with the help of photosynthesis in the presence of sunlight and cabon dioxide water. BY this photosynthesis process the plants get their nutrition, and they full fill their needs. By this process they can grow. So I thing its great that god made the impossible thing possible by making the plants make their own food. Plants have this ability to fulfil their need. That really appreciating.

20210707035955_2wvvrg.pdf bupuxopigumad.pdf free shazam music er bibliografia formato apa para paginas web bajirao mastani movie songs starmusiq 46543765547.pdf 17480507474.pdf 77698725912.pdf need for speed rivals android apk free download 1607693ff64982---86739659070.pdf muwupaxukub.pdf 14127054456.pdf biogeochemical cycles ncert pdf dell optiplex 760 ultra small form factor specs 160e7706873b6e---fepafejezazuderuxag.pdf stm32f407 discovery schematic pdf mini world block art download pc game full version jakes.pdf kekujoxadupujadamef.pdf rifle competency test questions and answers are projective tests valid identify the font in pdf graphing rational functions worksheet answer key

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download