It is the average breathing rate of an adult human being. Insects have spiracles on the lower surface of the body. During aerobic respiration, glucose is completely broken down into carbon dioxide and water and energy is released. Certain small pores are present on the surface of plant through which gaseous exchange occurs. Fast breathing helps in supply of more oxygen to our cells. Dolphins and whales comes to the surface of sea-water from time to time to breathe in air, sometimes whales release a function of water that moves upwards like a spray. (b) tracheae Answer Save. Identify them. [NCERT Exemplar] It gets accumulated in the muscle cells and causes pain and muscle cramps. Free Biology Form 3 Notes. 2). Question 10. Grasshoppers have three part bodies while the human body is one part. Do they possess lungs? Diaphragm forms the ………….. of the chest cavity. Which gas present in air is essential for aerobic respiration? The massage or hot water bath gives the relief from muscle cramp or pain, because it improves the circulation of blood leading to increase supply of oxygen to the muscle cells. What values do we pick from this situation? Yeast is used in wine and beer industries because it respires Question 11. Answers: 2. The animal is whale. They have six jointed legs, two pairs of wings and two antennae. A person put some warm water in an aquarium having fish during winter season. It involves two major steps: The number of times a person breathes, in a minute is called as breathing rate. Download TEXTBOOK KSSM Biology Form 4 (DLP) PDF for free. Spiracles are usually found on certain thoracic and abdominal segments. (c) bronchioles These are found in the tadpoles besides fishes. (b) Is breathing rate also affected after doing long hour of exercise. How many ceca are there? Question 20. Answer: Question 3. Fish, as most fish breathe through their gills and do not have lungs. Smoking tobacco in the form of beedi, cigarette or cigar damages our lungs gradually and causes ill health. Their body is covered with a hard exoskeleton. The organ that is responsible for speech is larynx or voice box. Yes, breathing rate will be faster. Human cannot survive under water because they do not possess any gills to make use of oxygen dissolved in water for breathing. (a) Exhalation process of respiration is being tested in the activity. It is common for humans to eat grasshoppers in places like Asia and Africa where the bigger species of grasshopper are found, and there is a less readily available alternative protein source. There are three animals named A, B and C. Among them A can stay on land as well as in water. When the frog is on land, a pair of lungs helps in respiration. How is a grasshopper's mouth adapted for plant eating? 9. Aerobic Respiration: When breakdown of glucose occurs with the use of oxygen, it is called aerobic respiration. Many organisms have been investigated as potential agents for vector mosquito control, including viruses, fungi, bacteria, protozoa, nematodes, invertebrate predators and fish. Unwanted particles like smoke, dust, pollen, etc., are called ………….. . what is … The values we understand are obedience, respect elders and healthy habits. TEXTBOOK KSSM Biology Form 4 (DLP) was published by adlin.saroni on 2020-04-18. Answer: (a) Respiration is the process of breakdown of food to produce energy for performing various functions. Answer: During the process of inhalation diaphragm contracts and moves downwards. 6. Start … Answer: (b) Animals that can breathe through skin as well as through lungs are frogs. (b) The plant roots being underground respire by using which mechanism? Answer: Our nostrils possess hairs and mucous lining. Grasshoppers have an open circulatory system while Humans have a closed circulatory system. Therefore, it is not advisable to sleep under trees during night because the person will suffer from suffocation and feel excess weight on chest. Question 5. Blow holes are surrounded by muscles that keep the holes closed when the whales or dolphins are under water and opens it when the animal is at the surface and needs to breathe. (d) moist and slimy (h)-(ii) The animal that can breathe through lungs. Answer: Yeast is a single celled organism. Exhalation process of respiration is being tested in the activity. Find more similar flip PDFs like TEXTBOOK KSSM Biology Form 4 (DLP). Figure A indicates inhalation and figure B indicates exhalation. (a) Why did the dough rise? Answer: Process of respiration yields energy which is required to perform a variety of routine activities. Root cells get oxygen from the air present in the space between the soil particles. Insects like the cockroach, grasshopper, etc., have tiny holes on the sides of their body. Spiracles lead to an extensive network of tracheal system which is absent in the leaves. Explain. Spiracles are fewer in number as compared to stomata. 4. 2. Answer: A part from stomata another structure is used by plants to respire. Wildscreen's Arkive project was launched in 2003 and grew to become the world's biggest encyclopaedia of life on Earth. Coxa: The section of a leg that is attached to the body. The air that we breathe in passes to the tiny sacs called Insects have a special organ present to carry out respiration. The CO2 gas released during this process causes the bread dough to rise. 2. There are several root hairs present on the roots of a plant. It is because in jar A, CO2 released during respiration is used by the plants, i.e. No, it is process to remove / clear the particles harmful for us resulting in clean, fresh air to enter the lungs. Spiracles are fewer in number as compared to stomata. Answer Save. Zack Black. Insect morphology is the study and description of the physical form of insects.The terminology used to describe insects is similar to that used for other arthropods due to their shared evolutionary history. (b) heart 2. This helps the root to respire through the air present in the space between soil particles. After a massage, she was relieved of the pain. Answer: Compound eyes can see shape, colour, movement, and tell the distance. Differences between these two are as follows. Answer the following questions. Cell is the smallest structural and functional unit of the body. (a) Due to extensive exercise, formation of lactic acid occurred as muscles starts to respire anaerobically. Question 3. Lactic acid is formed due to anaerobic respiration in the muscle cells after heavy exercise or running. Answer: The various organs in the respiratory system of human are nostrils, nasal passage, nasal cavity, windpipe and lungs. True, Question 1. The breathing rate during exercise is increased while during sleep it goes down. 1. What is false? Scuba Diving Certain aquatic beetles and true bugs can dive by carrying a temporary bubble of air with them, much like a SCUBA diver carries an air tank. Ask Question Answer: [NCERT Exemplar] Oxyhaemoglobin. Roots of the plants respire under the ground. Question 22. Answer: 8 and 6. (a) Write any three hazards of smoking. She felt pain in her legs because of accumulation of lactic acid in the leg muscles. Earthworm, because it breathes through its skin and it does not have lungs. Answer: The number of times a person breathes in a minute is termed as breathing rate. Now give the name of animal A, B and C. [HOTS] Answers: *more questions on next slide 15. (much energy is required). After we work hard or perform physical activity, we feel hungry. Question 13. (f)-(iii) Anaerobes respire using anaerobic mode. Animal B has specific organs to respire in the water which is not found in any other water animal. 3. Spiracles are breathing openings found on the surface of insects, certain cartilaginous fish such as certain species of sharks, and stingrays.Hammerheads and chimeras don't have spiracles. Therefore, fishes will have difficulty in breathing in the absence of oxygen and will die. Lungs are very ………….. organ. 1 decade ago. It can be shown by the following equation: Aerobic respiration is seen in most of the organisms such as humans (man), dogs, cats, lions, elephants, cows, buffaloes, goats, snakes, earthworms, frogs, fishes, etc. It is not wise to sleep under a tree during night. Females have a large pair of pointy structures called the ovipositor, which are used to deposit eggs into soil. C-Pharynx [NCERT Exemplar] During this process O2 is released as a byproduct and a balance between O2 and CO2 is maintained in the atmosphere. Animals that can breathe only through skin are earthworm and leech. There blow holes are located on the upper parts of their heads. An intermediate compound is formed with the release of less amount of energy during this process. Biology Notes Form Two PDF. Their blood is green while ours is blue inside and red when it is released into the air. Answer: On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. This leads to the increase in the proportion of CO2 in the air. 4. females have what. Answer: The fishes have special type of organs for respiration called gills. F-Nasal passage Dolphins and whales comes to the surface of sea-water from time to time to breathe in air, sometimes whales release a function of water that moves upwards like a spray. Question 6. What is through the spiracles? It is the average breathing rate of an adult human being. Although "grasshopper" is sometimes used as a common name for the suborder in general, some sources restrict it to the more "advanced" groups. Due to this, rate of breakdown of food increases and more energy is released. Describe each one. Oxygen breaks down food and releases energy during respiration. 1. (b) Yes, breathing rate will be faster. The fishes have special type of organs for respiration called gills. 10. What are the end products of aerobic respiration. (c) down and outwards Fish breathe with the help of gills which are richly supplied with blood vessels. Question 17. The oxygen rich air enters through the skin. Oxygen breaks down food and releases energy during respiration. Give reason for your answer. 16. Question 16. Question 23. (b) The amount of CO2 be the lowest in which one and why? Answer: Question 11. During aerobic respiration, glucose is completely broken down into carbon dioxide and water and energy is released. Values learned – We should not force ourselves exercise but not over burn yourself discipline. those present nearby smokers. 17. A girl was suffering from cold and was sneezing continuously. (d) sleeping, Question 7. 2). (c) Why was sugar added to the dough? Spiracle, in arthropods, the small external opening of a trachea (respiratory tube) or a book lung (breathing organ with thin folds of membrane resembling book leaves). However, most spiracles have valve-like structures that allow them to close (Fig. When we exhale into lime water its colour changes, into slightly milky white because exhaled air contains CO2. Differences between these two are as follows. (a) Among both figures identify which A or B indicates the process of inhalation and which shows the process of exhalation? (a) Figure A indicates inhalation and figure B indicates exhalation. Answer: 7. inhalation Answer: The process of breakdown of food in the cell with the release of energy is called cellular respiration. Biology Form 2 Questions and Answers. Question 25. (adsbygoogle = window.adsbygoogle || []).push({}); © Copyright 2021, All Rights Reserved Answer: (d) starch Lungs are very delicate organs and essential for breathing, thus beeping us alive. 1 4. When we exhale or breathe out, percentage of a certain gas is high. Root cells get oxygen from the air present in the space between the soil particles. On the basis of the presence or absence of oxygen, respiration is classified into two types: Answer: When we work hard or perform physical activity (like running, swimming, cycling), we need more energy. This leads to the increase in the proportion of CO2 in the air. Grasshopper has the most primitive type of mouthparts for chewing. Fishes are the aquatic animals that live in water. Question 24. Those of the Short-Horned Grasshopper are on the forward part of the Abdomen, under the Wings. Our nostrils possess hairs and mucous lining. True Yeasts such as Saccharomyces cereviseae and certain bacteria carry out anaerobic respiration. (a) aerobically producing oxygen admin 8. do they all have same number of segments. What is the role of this gas during respiration? So, if one sleeps under a tree at night, he will have problems in breathing as the amount of CO2 in the air around will certainly be more than oxygen. 7th Class, Science (b) Yes, smoking affects people who are passive smokers, i.e. Animals that can breathe through spiracle and tracheae? The oxygen dissolved in water enters through the gills. Like us, grasshoppers have a digestive system with organs and glands that help them break down their food. Where is it located? (d) Animals that can breathe through gills. The end product formed during anaerobic respiration in yeast are. Tadpole, as it breathes through gills and do not have lungs. It occurs to maintain a healthy balance between intake of O2 and release of carbon dioxide. Answer: Insects possess special organ called spiracles for respiration. ………….. is an essential phenomenon for the survival of living organisms. The body starts respiring anaerobically in the absence of sufficient oxygen. What is the reason behind it? Answer: Cellular respiration takes place in the mitochondria of the cell. Living organism respire to get energy from food. 5. During the process of exhalation, the ribs move [NCERT Exemplar] What is its scientific name? 2. how many pairs of legs does the grasshopper have 3. how many jumping legs 4. how many walking legs 5. do the legs have claws. (d) anaerobically producing CO2 Observe the figures carefully and answer the following questions. The rapid breakdown of food makes us to feel more hungry. It occurs to maintain a healthy balance between intake of O2 and release of carbon dioxide. Normally we are breathing at a slower rate but during physical activities, to make sufficient amount of O2 reaching cells we breathe faster. (c) Is sneezing a respiration process? (c) Sugar is added into the dough, because it acts as a food for yeast. Animals that can breathe through gills are tadpole and fish. Thus, it needs to be a continuous process. Lenticels. Aerobic respiration takes place in mitochondria. (c)-(ix) (g)-(iv) They were asumed and wondered how it happened. Question 9. Answer: Biology Form Three Syllabus. Still have questions? Question 2. Therefore, it is not advisable to sleep under trees during night because the person will suffer from suffocation and feel excess weight on chest. (b) Alcohol and CO2 This oxygen is then carried to all the parts of fishes for respiration. Answer: (a) Fish – Gills If we add warm water, to the aquarium the dissolved oxygen will dissociate and move into the atmosphere again, leaving the least percentage of oxygen into the water (as it is known that the solubility of gases in water goes down as the temperature rises). Answer: When we exhale into lime water its colour changes, into slightly milky white because exhaled air contains CO2. (a) Cockroach, grasshopper, snail, ant Label these on Figure 2. (i)-(vi) False, oxygen breaks down glucose inside the cells of organisms. (Grasshoppers and other jumping insects have enlarged hind femora with powerful muscles). 12. Does yawning help us in anyway? Grasshopper blood is green while our blood is red. (a) Smoking is very injurious for the respiratory system. In some animals, exchange of gases takes place through its thin and moist skin. (a)-(x) Air goes into the Insect’s body through the Front Holes. (b) What is the result of the activity? Identify these pores? Biology Form 2 All Chapters. Frogs are amphibians. (b) Lizard, cow, earthworm, snake Question 1. (b) bakery industry Diaphragm forms the ………….. of the chest cavity. During anaerobic respiration (also called fermentation), yeast produces ethanol or alcohol as a byproduct which is used in making wine and beer. Spiracles lead to an extensive network of tracheal system which is absent in the leaves. Breathing rate is somewhat faster in women than in men and in children it is higher (20-30 times/min) than adults. The roots of a plant take up oxygen from the ………….. trapped between the ………….. particles. Cellular respiration takes place in the mitochondria of the cell. The dough rises due to the release of carbon dioxide during anaerobic respiration by yeast cell. Explain cellular respiration. 6. carbon dioxide, water, energy Question 2. Anaerobic Respiration: When breakdown of glucose takes place without using oxygen, it is called anaerobic respiration. A few insects have modified spiracles that can pierce the submerged portions of aquatic plants, and take oxygen from air channels within their roots or stems. Paheli participated in a 400 m race competition held at her school and won the race. Breathing Answer: Frog breathe by their moist skin and through lungs also. Anaerobic respiration. A-Ribs Answer: The end product formed during anaerobic respiration in yeast are. (d) pharynx The largest grasshoppers are about 90mm. The number of times a person breathes in a minute is termed as breathing rate. Yeast requires high temperature to grow, multiply and to respire. How many tubules do they have, and what is their function? what happens to body and process of respiration? When we go under water we have to take oxygen gas cylinders for breathing. Grasshopper Anatomy Like all insects, the grasshoppers have three main body parts – the head, the thorax and the abdomen. Gills are actually the projections of skin and have blood vessels for the exchange of respiratory gases. 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In the figure label the arrows and indicate the direction of. Answer: On a cold day, the warm and moist air exhaled by us condenses into moist when it comes in contact with the cold air of the atmosphere, this looks like white smoke. Answer: (b) take in oxygen dissolved in water, Question 5. They consist of tiny holes that permit air to enter trachea. 1,968 Views. Choose which among the following can breathe through lungs as well as through skin? from here. To produce more energy to meet the oxygen requirement of muscles, muscle cells perform anaerobic respiration for a short duration. 13-10 c) Large jointed legs d) Spiracles 4) Label the following features of the external anatomy of a grasshopper below: head, thorax, abdomen, wings, spiracle, mouthparts, compound eye, antenna. The glucose is not completely broken down into carbon dioxide and water. (d) Tadpole, as it breathes through gills and do not have lungs. Free Biology Form 2 Notes. Question 7. Smoking is very injurious for the respiratory system. Question 5. There was a sour smell too. Glands include the salivary glands and gastric caecae. Question 26. Answer: Question 14. Her mother took her to hospital where the doctor examined and told her not to push herself more than necessary. Answer: How many abdominal segments does a grasshopper have? Insect - Insect - Circulatory system: The circulatory system is an open one, with most of the body fluid, or hemolymph, occupying cavities of the body and its appendages. D. the brain is … we have to take oxygen gas cylinders for breathing group ’ s decision not... The highest in which one and Why ganoid fishes a pair of lungs helps respiration! Biggest encyclopaedia of Life on Earth food to produce energy for performing various functions or other references ) 1 to... Has more percentage of a leg, between the ………….. of the Petrognatha! Insects, the skin and it does not breathe by their moist skin and it not. 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And water and respires through a specific organ called gills back by the gills ( a ) that..., Boojho and paheli were talking with each other as they also inhale air containing tobacco No, different respire! And baking industry as breathing rate HOTS ] answer: ( a which! Respiratory organs in the experiment, how many spiracles does a grasshopper have we exhale or breathe out in dioxide! By their moist skin as well as lungs when Flying from where oxygen!