Biology Class 11 Chapter 12 Notes

• Our comprehensive Biology Class 11 Chapter 12 Notes will ensure you're fully prepared for your exams.
• Important Multiple Choice Questions for MDCAT Preparation from the chapter no 12 Nutrition class 11.
• What is the advantage of a digestive tract as compared with digestive cavity?
• What are functions of human liver?
• What measures should be taken to avoid food poisoning?
• Can we get along without large intestine?
• Define nutrition.
• Differentiate between autotrophy and hetrotrophy.
• What is holozoic nutrition? Name steps in holozoic nutrition.
• Differentiate between sac like digestive system and tube-like digestive system.
• Differentiate between herbivore and carnivore.
• How does jaundice develop?
• Differentiate between nutrition and nutrient.
• Differentiate between intracellular and extracellular digestion.
• Differentiate between saprophytic and parasitic mode of nutrition.
• What are salivary glands? What are the types of salivary glands in man?
• What are insectivorous/carnivorous
• What is heart burn or pyrosis?
• Differentiate between Peristalsis and antiperistalsis.
• What do you know about hunger pang in human?
• What is dyspepsia?
• Give the features of sporophytes. What is saprophytic nutrition?
• Give two ways by which pepsinogen is activated. How pepsinogen is converted into pepsin.
• Define macrophages feeding with example.
• Differentiate between Gastrin and Secretin.
• Differentiate between food poisoning and botulism.
• Write down the role and deficiency symptoms of K, N and MG in plants.
• What is Diarrhea.
• Differentiate between Constipation and Diarrhea.
• What is Obesity?
• How adipose tissue is formed?
• Wat are the symptoms shown in plants of nitrogen deficiency and potassium deficiency in the soil.
• How Sundew (Drosera) show its insectivorous activity?
• What is holozoic nutrition?
• What are nematocysts? What is their role in ingestion of prey?
• Write down causes and treatment of anorexia nervosa?
• How is food swallowed by you?
• What is ulcer?
• How the secretion of gastric juice is regulated?
• what function of liver in human body? Ans: Functions of human liver: • It secretes bile which may be temporarily stored in the gall bladder and released into the duodenum through the bile duct. • Bile contains bile salts, which acts on fats and emulsifies them. • It converts highly toxic ammonia into less toxic urea to be extracted through kidneys. • It filters and stores blood. • It is storage site for vitamins, iron, blood substances used in blood clotting.
• what is holozoic nutrition? Holozoic Nutrition: (Greek; Holo=whole and Zoikos=of animals) It is a type of heterotrophic nutrition that is characterized by the internalization (Ingestion) and internal processing of liquids or solid organic food particles to get energy. Steps of holozoic nutrition: 1) Ingestion 2) Digestion 3) Absorption 4) Assimilation 5) Egestion
• how does jaundice develop? Ans: Jaundice: If bile pigments are prevented from leaving digestive tract they many accumulate in blood and cause a condition called jaundice.
• A plant requires potassium for:  a) Synthesizing protein  b) Synthesizing chlorophyll  c) Opening and closing of stomata   d) Synthesizing fats 
• Carnivorous plants live in soils that are deficient in:  a) Water  b) Oxygen  c) Nitrogen  d) Iron
• Many humans become ill from consuming milk and milk products because they lack:  a) Bacteria in intestine  b) Hydrochloric acid  c) Lactase  d) Renin
• Animals obtain carbohydrates mainly from:  a) Glucose  b) Starch  c) Sucrose  d) Glycogen
• Which one is parasitic plant?  a) Pitcher plant  b) Venus fly trap  c) Sundew  d) Dodder