Life Processes - 2 (Class X)

This is the correct answer. The energy derived from the food we eat is stored in our body in the form of glycogen.

This is the correct answer as all the statements regarding the different types of nutrition are correct.

This is the correct answer as salivary glands, liver and pancreas are the glands that are associated with the human digestive system.

This is the correct answer. The opening and closing of stomatal pore is a function of guard cells.

This is the correct answer. Grass and algae are autotrophic.

This is the correct answer as bile salts are made in liver and they help emulsify or break down the fats or lipids present in the food so that it makes it easy for the enzymes to act and digest them.

This is the correct answer. Gastric juices contain hydrochloric acid, pepsin and mucus.

This is the correct answer as inside the dentine is the pulp cavity that contains nerve cells and blood vessels.

Mitochondria produce energy through cellular respiration. Thus, they are the site of aerobic respiration in cells.

This is the correct answer as all statements are correct. Rapid breathing supplies more oxygen to body cells for producing more energy as required in sports etc. Haemoglobin carries oxygen required for respiration. Haemoglobin has more affinity for carbon monoxide than oxygen, which is why if carbon monoxide is inhaled by someone, then it binds very strongly with the haemoglobin in blood and prevents it from carrying oxygen to brain and other parts of the body and causes carbon monoxide poisoning.

This is the correct answer. Respiration includes breathing and oxidation of food in the cells. It breaks food by oxidising it and releasing energy.

This statement is incorrect. White blood cells manufacture the antibodies that fight infection. These are also known as the soldiers of the body.

This is the correct answer. Platelets help in the coagulation or clotting of blood in a cut or a wound.

This is the correct answer. Xylem vessel is a non-living tube which runs like a drainpipe through the plant.

Pulmonary artery is the artery carrying blood from the right ventricle of the heart to the lungs for oxygenation.

This is the correct answer as this statement is correct. The human heart has four chambers, namely the ventricles and the atria. The ventricles are the lower chambers and the atria are the upper chambers.

This is the correct answer choice as this statement is incorrect. The lymph capillaries are mainly responsible for the absorption of interstitial fluid from the tissues.

This is the correct answer. Plants get rid of gaseous waste products through stomata in leaves and lenticles in stem. They get rid of stored solid and liquid wastes through shedding of leaves, barks and felling of fruits. They also secrete wastes through gums and resins.

This is the correct answer as this statement is correct. Ureters are the tubes that carry urine from the kidneys to the bladder.

This is the correct answer as ethanol, carbon dioxide and energy are produced during anaerobic respiration.

This is the correct matching. Earthworms use skin to absorb oxygen from air and remove carbon dioxide. Grasshoppers have tiny holes called spiracles on their body and air tubes called tracheae are respiratory organs. Mussels have gills as respiratory organs.

Oxygen is taken in alveoli and carbon dioxide is also eliminated here. The gaseous exchange takes place in alveoli in lungs.