Ch 8 Biology Class 11 Notes
Important easy to understand Notes of Ch 8 Biology Class 11 Notes English Medium written by Professor Sulman Arif Suib. These notes are very helpful in the preparation of Biology for students of the 9th class Biology English Medium and these are according to the paper patterns of all Sindh Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Define nutrition and nutrients.
- Briefly describe the process by which food is obtained or prepared.
- Name the processor by which plants prepare their food.
- Describe heterotrophic nutrition.
- Mention the types of heterotrophic Nutrition.
- How Amoeba and Paramecium obtain nutrition?
- Define mineral nutrition in plants.
- What are macronutrients and micronutrients?
- Why nitrogen is essential for plants?
- What are the symptoms of Nitrogen deficiency?
- Why do plants need magnesium? What are the symptoms of magnesium deficiency?
- What is the importance of fertilizers?
- Describe the environmental hazards related to chemical fertilizers.
- What are the components of the human food?
- Write down the role and sources of Carbohydrates, proteins, and fats.
- Define calories.
- Write a short note on vitamins.
- Write a short note on minerals.
- What are the metabolic functions of water and dietary fibers?
- Define and describe the balanced diet related to age sex and activity.
- Describe problems related to nutrition (malnutrition).
- What do you know about malnutrition problem in Pakistan?
- Describe protein deficiency disorders.
- Describe a mineral deficiency disease.
- What do you know about our intake of nutrients?
- Describe the effects of malnutrition on a human.
- Discuss the social problems related to malnutrition.
- Define the terms digestion and egestion.
- Describe a human digestive system.
- Name and define the steps involved in digestion.
- What is the oral cavity? Describe its functions.
- Describe the functions of salivary gland.
- Why grinding and lubrication are necessary for swallowing?
- What is peristalsis?
- Briefly describe the structure and function of a stomach.
- Describe the actions of bile salts, pancreatic juice, and intestinal juice.
- What are villi? Explain the role of villi in increasing the absorptive surface of the intestine.
- Describe the structure and functions of the large intestine.
- Explain the disorders of gut.
- How many stomach leanings are protected from an acidic environment.
- Why fats are called most efficient from of food?
- Distinguish between the following in tabular form: (i) Fat-sobule vitamins and water sobule vitamins (ii) Marasmus and Kwashiorkor (iii) Chemical digestion and mechanical digestion (iv) Autotrophic nutrition and heterotrophic nutrition (v) Inorganic fertilizers and organic fertilizers (vi) Carnivores and Herbivores (vii) Digestion in stomach and digestion in intestine.
- Important Short Questions Answers of Ch 8 Biology Class 11 Notes Nutrition.
- Why fertilizers are necessary for plants?
- How stomach linings are protected from the acidic environment?
- Why nitrogen is essential for plants?
- Why fats are called most efficient form of food?
- Why grinding and lubrication are necessary for swallowing?
- Define nutrition and nutrients.
- Define autotrophic nutrition and heterotrophic nutrition.
- Describe heterotrophic nutrition.
- Define mineral nutrition in plants.
- Why nitrogen is essential for plants?
- Define sources of carbohydrates.
- Define calories.
- Write a short note on vitamins.
- Define balanced diet.