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11.12.2020, adminThe first part discusses the reasons behind respiration. Under this, terms like cellular respiration along with the site of cellular respiration class 10th ncert respiration kit explained.
The process of breakdown Ncert Class 10th Geography Notes Kit of food with and without the presence of oxygen are explained using chemical equations. The process of anaerobic respiration is explained under situations like a breakdown of food and in muscle.
Breathing mechanism along with the process of inhalation and exhalation is described in the chapter, Respiration in Organisms. Activity helps to understand the changes in breathing rate under different conditions. Thereafter, the mechanism of breathing in human beings is extensively explained using diagrams in the chapter, Respiration in Organisms.
Focus is also given on parts like nasal cavity, lungs, chest cavity and diaphragm. Harmful effects of smoking are discussed in short. Under the human respiratory systemthe effect of breathing on the chest size is explained using activity and class 10th ncert respiration kit model showing it diagrammatically.
The concept of breathing in animals is discussed by taking examples of cockroaches and earthworms. The process of breathing underwater is explained along with a figure depicting different breathing organs of fish.
At last respiration in case of plants is covered in the chapter, Respiration in Organisms. The chapter, Respiration in Organisms is covered under the following sections: 1. Why Do We Respire? Breathing 3. How Do We Breathe? What Do We Class 10th ncert respiration kit Out? Breathing in Other Animals 6. Breathing Underwater 7. Do Plants Also Respire? Why does an athlete breathe faster and deeper than usual after finishing the race?
Anathlete needs to supply extra energy to his muscle cells which have worked hard during running. For this, he breathes faster and deeper so that more oxygen is supplied to the cells. This speeds up the breakdown of food and as a result, more energy is released.
List the similarities and differences between aerobic and anaerobic respiration. In both aerobic and anaerobic respiration, the food is broken down to release energy. End products of anaerobic respiration can be lactic acid or CO 2 and alcohol. Sneezing expels the foreign particles from the inhaled air, so that only clean air enters our body. It Ncert Solutions Of Class 10th Geography Chapter 3 Kit usually occurs because of the irritation in the upper breathing passage. This irritation happens when we inhale some unwanted particles and they get trapped in our nasal cavity.
Smoke, dust, pollen. Take three test-tubes. Label them Class 10th ncert respiration kit, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant. Which test-tube would have the highest concentration of CO 2?
Test tube A will have the highest concentration of CO 2. This is because test tube A contains snail. Snail is an organism that breathes class 10th ncert respiration kit O 2 class 10th ncert respiration Class 10th Ncert First Chapter Kit kit breathes out CO 2. Hence, CO 2 concentration increases in test tube A. Test tube B contains a water plant, which takes in CO 2 for food synthesis and gives out O 2.
Hence, more O 2 concentration is found in test tube B. Test tube C contains both a snail and a plant. The CO 2 produced by the snail is utilized by the plant for its food synthesis and the O 2 class 10th ncert respiration kit by the plant is utilized by the snail for respiration. Column I. Given below is a square of letters in which are hidden different words related to respiration in organisms.
Find the words for your respiratory. Clues about those words are given below the square. Page No Question 1: Why does an athlete class 10th ncert respiration kit faster and deeper than usual after finishing the race?
Answer: Anathlete needs to supply extra energy to his muscle cells which have worked hard during class 10th ncert respiration kit. Question 2: List the similarities and differences between aerobic and anaerobic respiration.
Answer: Similarity between aerobic and anaerobic respiration: In both aerobic and anaerobic respiration, the food is broken down to release energy. Differences between aerobic and anaerobic respiration: Aerobic respiration Anaerobic respiration It is the process of breakdown of food in the presence of oxygen.
It is the process of breakdown of food in the class 10th ncert respiration kit of oxygen. Its end products are CO 2 and H 2 O. It takes longer time to release energy. It is a fast process as compared to aerobic respiration. It produces large amount of energy. It produces small amount of energy as compared class 10th ncert respiration kit aerobic respiration.
Examples: It occurs in most plants and animals. Examples: Yeast, bacteria, human muscle cells. Question 3: Why do we often sneeze when we inhale a lot of dust-laden air?
Answer: Sneezing expels the foreign particles from the inhaled air, so that only clean air enters our body. Question 4: Take three test-tubes. Answer: Test tube A will have the highest concentration of CO 2. Therefore, test tube A has the highest concentration of CO 2. Question 5: Tick the correct answer: a In cockroaches, air enters the body through i lungs gills iii spiracles iv skin b During heavy exercise, we get cramps in the legs due to class 10th ncert respiration kit accumulation of i carbon dioxide lactic acid alcohol iv water c Normal range of breathing rate per minute in an average adult person at rest is i ii iii iv d During exhalation, the ribs i move outwards ii move downwards iii move upwards iv do not move at all.
Answer: i During heavy exercise the breathing rate of a person slows. F ii Plants carry out photosynthesis only during the day and respiration only at night.
F iii Frogs breathe through their skins as well as their lungs. T iv The fishes have lungs for respiration. F v The size of the chest cavity increases during inhalation. Question 8: Given below is a square of letters in which are hidden different words related to respiration in organisms.
Question 9: The mountaineers carry oxygen with them because: a At an altitude of more than 5 km there is no air. Answer: The mountaineers carry oxygen with them because: a At an altitude of more than 5 km there is no air.
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Pick the odd-one-out from each of the groups given below on the basis of respiratory organs. Give reason for your answer. It is because cockroach, grasshopper and ant are all insects, which respire by means of tracheae, whereas most snails respire though gills. Question Which gas present in air is essential for aerobic respiration?
What is the role of oxygen during respiration? Solution: Oxygen present in air is essential for aerobic respiration. With the help of oxygen organic food is completely oxidised into carbon dioxide and water to release energy. On an average, an adult human being at rest breathes times per minute.
The breathing rate, however, may differ under different conditions. Arrange the following activities given in the box in order of increasing breathing rates and give reason for your answer. Watching T. It slows down when a person is taking complete rest.
Whenever a person does any activity, the breathing rate becomes faster. It further increases with strenuous work to provide more oxygen to the cells to get more energy. On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke.
They were amused and wondered how it happened. Help them find the answer. Solution: On a cold day, the warm and moist air exhaled by us condenses into mist when it comes in contact with the cold air of the atmosphere.
This looks like white smoke. Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in any way? Solution: During drowsiness, our breathing rate 1 slows down.
The lungs do not get enough oxygen from the air resulting in yawning. Yawning brings extra oxygen into the lungs and removes more carbon dioxide and thus, helps us to keep awake. Insects and leaves of a plant have pores through which they exchange gases with the atmosphere. Can you write two points of differences between these pores with respect to their position, number and extension into the body?
Solution: Spiracles in insects and stomata on leaves of a plant are pores through which gaseous exchange takes place. Paheli participated in a m race competition held at her school and won the race. When she came home she had mixed feelings of joy and pain as she had cramps in her leg muscles.
After a massage she was relieved of the pain. Answer the following questions related to the situation. Solution: a The pain in her legs could be due to the accumulation of lactic acid in the muscles. During heavy exercise or running etc. To get the additional energy, the muscle cells respire anaerobically. During this process, partial breakdown of glucose occurs to produce lactic acid which on accumulation causes muscle cramps.
It is because the mice kept in the jar will exhale C02 continuously by breathing and thus, increasing its amount in the bell jar. It is because in this jar, CO 2 released during respiration by the plant is used during photosynthesis. Give reasons. Solution: a Release of carbon dioxide during exhalation is being tested in the given activity.
A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After few hours, the dough had risen. There was a sour smell too. Solution: a Yeast undergoes anaerobic respiration in the absence of oxygen and produces ethyl alcohol and carbon dioxide.
The C02 released during respiration by the yeast results in the rise of dough. Match the names of organisms in column I with their organs of breathing in column II. I think you got complete solutions for this chapter. If there is a lack of oxygen in our muscle cells, pyruvate breaks in a different pathway. Glucose a 6-carbon molecule breaks into pyruvate a 3-carbon molecule and pyruvate is then converted to lactic acid a 3-carbon molecule along with the release of energy.
Respiration in plants Plants exchange gases through stomata. The large inter-cellular spaces ensure that all the cells are in contact with air. Carbon dioxide and oxygen are exchanged in and out of the cells by the process of Diffusion is directed by environmental conditions and the requirements of the plants. During night, in the absence of sunlight photosynthesis do not take place and hence carbon dioxide is released but not used up by the plants.
During the day, there is no carbon dioxide release because the released carbon dioxide is used up by the plants for photosynthesis. Oxygen is released instead of carbon dioxide during the day. Respiration in animals In aquatic animals, rate of breathing is fast due to the less amountof dissolved oxygen in water Fishes take in water through their mouths and force it to the gills from where the dissolved oxygen is absorbed by blood.
Terrestrial organisms use atmospheric oxygen and different animals use different organs for breathing. The surface of the organs is very fine and delicate and placed within the body. Passages are there in the body which takes the oxygen rich air to the area of respiration. Respiration in human beings Air is taken in through nostrils and the air is filtered while passing through the nostrils by fine hairs and mucus that line the passage.
From nostrils air passes to throat where rings of cartilages are present to ensure that air passage does not collapse. Air reaches lungs from throats and within the lungs the Class 10th Ncert Respiration Date passage divides into smaller and smaller tubes ending into balloon-like structure called alveoli. Network of blood vessels are present in the alveoli.
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