Living Science Biology Class 8 ICSE Solutions Chapter 6 Production of Food and its Management

ICSE Living Science Biology for Class 8 Solutions Chapter 6 Production of Food and its Management Check Your Progress 1 Fill in the blanks. Question 1. ……………… crops are grown in winter season. Answer: Rabi crops are grown in winter season. Question 2. Soil acidity can be reduced by adding ………………… Answer: Soil acidity can be reduced by adding lime. Question 3. In …………… irrigation water is sprayed on the standing crops in the form of artificial rain. Answer: In sprinkler irrigation water is sprayed on the standing crops in the form of artificial rain. Question 4. …………… and…………. are phosphatic fertilizers. Answer: Ammonium and superphosphate are phosphatic fertilizers. Question 5. ………….. was the first instrument to be used for harvesting. Answer: Hand sickle was the first instrument to be used for harvesting. Check Your Progress 2 Fill in the blanks. Question 1. …………… are chemicals used to kill insects. Answer: Insecticides are chemicals used to kill insects. Question 2. Hybridization results in production of ……….. and ………….. adapted varieties. Answer: Hybridization results in production of vigorous and better adapted varieties. Question 3. ………….. is obtained from red algae. Answer: Agar is obtained from red algae. Question 4. Alcohol and…

Living Science Biology Class 8 ICSE Solutions Chapter 5 Conservation of Resources and Pollution

ICSE Living Science Biology for Class 8 Solutions Chapter 5 Conservation of Resources and Pollution Check Your Progress Fill in the blanks. Question 1. The process in which rich top soil is lost or carried away either by wind or water is called soil …………….. Answer: The process in which rich top soil is lost or carried away either by wind or water is called soil erosion. Question 2. ………… is the practice of growing different crops in a given area each season. Answer: Crop rotation is the practice of growing different crops in a given area each season. Question 3. The depth of the soil below which soil spaces are filled with water only is called ……………. table. Answer: The depth of the soil below which soil spaces are filled with water only is called water table. Question 4. An …………. is a species that is in danger of becoming extinct as their number has reduced drastically. Answer: An endangered Species is a species that is in danger of becoming extinct as their number has reduced drastically. Question 5. In India hunting of tigers is banned under ………………….. tiger which was initiated after the population of tigers declined sharply.…

Living Science Biology Class 8 ICSE Solutions Chapter 4 Health and Hygiene

ICSE Living Science Biology for Class 8 Solutions Chapter 4 Health and Hygiene Check Your Progress 1 Fill in the blanks : Question 1. Diseases which are present right from the birth are called ………………. Answer: Diseases which are present right from the birth are called acquired diseases. Question 2. ………… and ………… are some diseases caused by parasitic worms. Answer: Elephantiasis and ascariases are some diseases caused by parasitic worms. Question 3. …………. foot is a fungal disease that spreads by direct contact. Answer: Athlete’s foot is a fungal disease that spreads by direct contact. Question 4. Malaria is caused by a protozoan called Answer: Malaria is caused by a protozoan called plasmodium. Question 5. African sleeping sickness spreads by …………… fly. Answer: African sleeping sickness spreads by tse-tse fly. Question 6. Dengue is a disease that spreads by the bite of ………… mosquito. Answer: Dengue is, a disease that spreads by the bite of Aedes mosquito. Question 7. ………….is a dreadful viral disease transmitted to human by the bite of a dog. Answer: Rabies is a dreadful viral disease transmitted human by the bite of a dog. Check Your Progress 2 Write True or False. Question 1. Lack…

Living Science Biology Class 8 ICSE Solutions Chapter 3 Control and Coordination

ICSE Living Science Biology for Class 8 Solutions Chapter 3 Control and Coordination Check Your Progress 1 Fill in the blanks. Question 1. The reaction of an organism to a stimulus is called a …………… Answer: The reaction of an organism to a stimulus is called a response. Question 2. The basic structural unit of the nervous system is a ………………… Answer: The basic structural unit of the nervous system is a nerve cell or a neuron. Question 3. ……………. nourishes the brain and protects it by absorbing shocks. Answer: Cerebrospinal fluid nourishes the brain and protects it by absorbing shocks. Question 4. …………. is the continuation of the medulla oblongata. Answer: Spinal cord is the continuation of the medulla oblongata. Check Your Progress 2 Fill in the blanks. Question 1. ………………. gives shape and protects the inner delicate parts of the eye. Answer: Scleroid gives shape and protects the inner delicate parts of the eye. Question 2. The two types of light sensitive cells are and ………………. Answer: The two types of light sensitive cells are rods and cones. Question 3. Middle ear contains a chain of three small bones known as ………….. and Answer: Middle ear contains a…

Living Science Biology Class 8 ICSE Solutions Chapter 2 Reproduction, Development and Growth

ICSE Living Science Biology for Class 8 Solutions Chapter 2 Reproduction, Development and Growth Check Your Progress 1 Fill in the blanks. Question 1. The reproductive sex cells are known as ………………. Answer: The reproductive sex cells are known as gametes. Question 2. ……………. is a non-green plant, which reproduces by budding. Answer: Yeast is a non-green plant, which reproduces by budding. Question 3. …………….. takes place in plants which do not produce seeds. Answer: Vegetative Propagation takes place in plants which do not produce seeds. Question 4. Sugarcane and pineapple are grown from ……………. Answer: Sugarcane and pineapple are grown from cutting. Question 5. In grafting from one plant is attached and tied to the rooted stem called …………….. of another plant. Answer: In grafting scion from one plant is attached and tied to the rooted stem called stock of another plant. Check Your Progress 2 Fill in the blanks. Question 1. The male reproductive part in flowers is called Answer: The male reproductive part in flowers is called androecium Question 2. Complete flowers are also called ………… or ……….. flowers. Answer: Complete flowers are also called bisexual or hermaphrodite flowers. Question 3. The process by which a sleeping…

Living Science Biology Class 8 ICSE Solutions Chapter 1 Transportation of Food and Minerals in Animals and Plants

ICSE Living Science Biology for Class 8 Solutions Chapter 1 Transportation of Food and Minerals in Animals and Plants Check Your Progress Fill in the blanks. Question 1. The transport system in humans consists of …………….and ………………. Answer: The transport system in humans consists of blood, blood vessels and heart. Question 2 The liquid part of the blood is called ………………. Answer: The liquid part of the blood is called plasma. Question 3. Erythrocytes have a protein containing iron, called …………….. Answer: Erythrocytes have a protein containing iron, called haemoglobin. Question 4 ………………. are also known as blood platelets. Answer: Thrombocytes are also known as blood platelets. Question 5 Circulation of blood between the heart and body organs (accept lungs) is called ……………… Answer: Circulation of blood between the heart and body organs (accept lungs) is called systemic circulation. Question 6 The value of the blood pressure in an adult is ……………. of mercury. Answer: The value of the blood pressure in an adult is 120/80 mm of mercury. Check Your Progress 2 Write True or False. Question 1 The lymphatic system consists of lymph vessels and lymph nodes. Answer: True Question 2: Phloem transports water and minerals upwards from the…

ICSE Class 7 Biology Important Questions Chapter 8 Excretion in Animals and Plants

Biology ICSE Class 7 Important Questions Chapter 8 Excretion in Animals and Plants Extra Questions Question 1. Name the various waste materials produced in the human body Answer: Nitrogenous waste products like ammonia, urea and uric acid – These are removed through kidneys. Extra salt – Mainly secreted through kidneys and also skin. Bile pigments – Mostly released in faeces while some in urine. Carbon dioxide and water – CO, is removed through, lungs while water is excreted through kidneys as urine and through sweat glands as sweet in your skin. Question 2. Name few excretory organs in humans. Answer: Kidneys, skin, lungs, liver. Question 3. Write briefly about liver as an excretory organ. Answer: Liver produces bile pigments from the haemoglobin of broken RBCs. It also converts the toxic ammonia produced in the cells into urea, which is less toxic. Urea is then carried to the kidneys and excreted. Question 3. Name three non-nitrogenous and three nitrogenous waste material produced by plants. Answer: Non-nitrogenous wastes are tannins, resins and latex. Nitrogenous wastes are caffeine, quinine and morphine. Question 4. Where is the waste material of plants deposited ? Answer: Plant wastes like tannins, resins, gums etc are stored in…

ICSE Class 7 Biology Important Questions Chapter 6 Ingestion, Digestion, Absorption and Assimilation of Food

Biology ICSE Class 7 Important Questions Chapter 6 Ingestion, Digestion, Absorption and Assimilation of Food Extra Questions Question 1. Put the organs in the correct order to show the path of food. Answer: Mouth → oesophagus → small intestine → large intestine → anus. This is the correct order of organs to show the path of food. Question 2. Draw diagram to show peristalsis through the oesophagus. Answer: Question 3. What ¡s peristahis? Answer: The process by which the food passes from the pharynx to the stomach through the oesophagus by a series of contraction is known as peristalsis. Question 4. Answer: Question 5. What changes occur in food in the mouth ? Answer: he mouth is the first part of digestive system. It receives food and starts mechanical digestion.. The ingested food is first broken down in the mouth when it is chewed. Simultaneously it get mixed with the saliva. This process is called mastication cr mechanical digestion. It prepares the food for chemical digestion, that is, the digestion by action of enzyme. The teeth help chewing down the food. There are 4 kinds of teeth. These are incisors, canines, premolars and molars, incisors are the cutting teeth. These…

ICSE Class 7 Biology Important Questions Chapter 4 Movement in Animals and Plants

Biology ICSE Class 7 Important Questions Chapter 4 Movement in Animals and Plants Extra Questions Question 1. Name the kind of locomotion shown by – Amoeba Paramecium Euglena Answer: Amoeboid locomotion Ciliary locomotion Flagellar locomotion Question 2. What is gliding flight in birds ? Answer: In gliding flight, the wings are held stretched sidewards without flapping. The air pressure above them is lower than the air pressure underneath. This provides a thrust that prevents birds from falling and enables the bird to glide slightly downward or gain height depending upon the prevailing air current. Question 3. Name two types of flights shown by birds. Answer: (a) Flapping flight (b) Gliding flight Question 4. Name the main organ of locomotion in – aquatic mammals Terrristrial mammals Answer: Aquatic mammal like whale and seal have fin-like flippers (modified limbs) for swimming. Terristrial mammals use two pairs of limbs (forelimbs and hindlimbs) like tigers, cows,’ etc or hind legs like humans, some apes, kangaroos, etc for locomotion. Question 5. What is the skeletal system made of ? Answer: Bones, joints connective tissue (cartilage, tendons and ligaments) and muscles. Question 6. Name the types of joints present in the human body. Answer: Question 7.…

ICSE Class 7 Biology Important Questions Chapter 5 Nutrition in Animals and Plants

Biology ICSE Class 7 Important Questions Chapter 5 Nutrition in Animals and Plants Extra Questions Question 1. Name the water soluble and fat soluble vitamins. Answer: Water-soluble vitamins are Vitamin B and C. Fat soluble vitamins are Vitamin A, D, E and K. Question 2. Define food additives. Answer: The substances that are added to food to make them more attractive or to increase their weight or to give colour or flavour to food are called food additives. Question 3. How is starch different from simple sugar molecules. Answer: Starch is made up of many molecules of simple sugar. It cannot be easily absorbed by the body. A simple sugar can be absorbed easily by the body. For example glucose, a simple sugar is given directly to sports person and patients to provide them quick eneigy. Starch has first to be broken down in to simple sugar to provide energy. Starch is a complex molecule of made up of many molecules of simple sugar. So it cannot be used as quick source of eneigy. Question 4. How do you test the presence of fats in a food item ? Answer: We will take a strip of brown paper. Now we…

Living Science Biology Class 8 ICSE Solutions

ICSE Living Science Biology for Class 8 Solutions Chapter 1 Transportation of Food and Minerals in Animals and Plants Chapter 2 Reproduction, Development and Growth Chapter 3 Control and Coordination Chapter 4 Health and Hygiene Chapter 5 Conservation of Resources and Pollution Chapter 6 Production of Food and its Management

ICSE Class 7 Biology Important Questions Chapter 7 Respiration in Animals and Plants

Biology ICSE Class 7 Important Questions Chapter 7 Respiration in Animals and Plants Extra Questions Question 1. Why is it better to breathe through your nose than your mouth ? Answer: It is better to breathe through our nose than our mouth because our nasal cavity is lined by hair. The air we breathe in contains fine dust particles. These particles get trapped in the hair in the nasal cavity and are thereby prevented front reaching the lungs. The inside of the nose is also covered by a sticky fluid called mucus. Dust and germs stick to the mucus and thus, the air taken in is cleaned. The air is also warmed up by blood vessels present in the nasal cavity. Question 2. Where does the process of cellular respiration take place ? Answer; Partially in the cytoplasm and partially in the mitochondria. Question 3. Write the equation showing the process of anaerobic respiration. Answer: Question 4. What is epiglottis ? Answer: A flap-like tissue behind the tongue called epiglottis covers the trachea when we swallow food and prevents food from entering the wind pipe while eating. Question 5. Write a brief note on structure of lungs. Answer: A pair…