Nutrition in Humans Class X

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Nutrition in Humans

Very Short Answer Type Questions:

  1. Why does an organism need food?
  2. Which are the main types of nutrition?
  3. What are enzymes?
  4. What is autotrophic nutrition?
  5. What is heterotrophic nutrition?
  6. Why does a plant convert carbohydrate into starch?
  7. What is photosynthesis?
  8. Write the chemical reaction of photosynthesis.
  9. What happens when a water molecule is split?
  10. Which are the essential factors of photosynthesis?
  11. What do you understand by variegated leaf?
  12. What is the function of stomata?
  13. What is a saprotroph?
  14. Amoeba shows which type of heterotrophic nutrition?
  15. What is ingestion?
  16. What is digestion?
  17. What is assimilation?
  18. What is egestion?
  19. What do you understand by nutrients?
  20. Which are the two main components of the human digestive system?
  1. Answer: An organism needs food for energy, growth and repair.
  2. Answer: The main types of nutrition are; autotrophic nutrition and heterotrophic nutrition.
  3. Answer: The biocatalysts are called enzymes.
  4. Answer: The mode of nutrition in which an organism makes its own food is called autotrophic nutrition.
  5. Answer: The mode of nutrition in which an organism takes food from another organism is called heterotrophic nutrition.
  6. Answer: Carbohydrate is converted into starch for long-term storage.
  7. Answer: The process during which carbon dioxide and water are converted into carbohydrate; in the presence of sunlight and chlorophyll; is called photosynthesis
  8. Answer:

 

 

 

  1. Answer: After splitting of the water molecule, oxygen and hydrogen are released.
  2. Answer: Carbon dioxide, chlorophyll and sunlight
  3. Answer: When a leaf shows many other colours; in addition to green; it is called a variegated leaf.
  4. Answer: Exchange of gases
  5. Answer: When an organism obtains food from dead remains of plants and animals, it is called saprotrophs.
  6. Answer: Holozoic nutrition
  7. Answer: The process of taking the food inside the body is called ingestion.
  8. Answer: The process of breaking complex nutritional substances into simple substances is called digestion.
  9. Answer: Utilisation of simple nutrients is called assimilation.
  10. Answer: Removal of undigested food and waste materials from the digestive system is called egestion.
  11. Answer: Substances which are required by the body for energy production and for growth and repair are called nutrients.
  12. Answer: Alimentary canal and accessory glands

Fill in the blanks:

  1. Autotrophs utilise ……………….materials to make organic materials.
  2. Animals and …………………….are heterotrophs.
  3. …………………is the stored food in animals.
  4. In leaves, light energy is absorbed by …………………….
  5. Photosynthesis does not happen in plant parts which do not contain ……………..
  6. Stomata are surrounded by ……………cells.
  7. Some bacteria in the soil convert atmospheric nitrogen into ……………….form.
  8. In saprotrophic nutrition, digestion happens ……………. ingestion.
  9. In holozoic nutrition, digestion happens ……………….ingestion.
  10. In amoeba; digestion takes place in ……………………
  11. ………………..is called bodybuilding food.
  12. Vitamins and minerals are required in ……………..quantity.
  13. ………………..facilitates the movement of food through the alimentary canal.
  14. Mouth is also known as a ………………..cavity.
  15. There are ……………pairs of salivary glands in our body.
  1. Answer: inorganic
  2. Answer: fungi
  3. Answer: Glycogen
  4. Answer: Chlorophyll
  5. Answer: Chlorophyll
  6. Answer: Guard
  7. Answer: Organic
  8. Answer: Before
  9. Answer: After
  10. Answer: food vacuole
  11. Answer: Protein
  12. Answer: Small
  13. Answer: Peristalsis
  14. Answer: Buccal

15. Answer: Three


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Chemical Reactions and Equations:

Types of Chemical Reaction:

Acids, Bases and Salts:

Common Properties of Acid and Base:

Metals and Non-metals:

Carbon and its Compounds:

Periodic Classification of Elements:

Life processes:

Control and co-ordination in animals and plants:

Reproduction:

Heredity and evolution: 

Conservation of natural resources:

How do Organism Reproduce

Electricity:

Magnetic effects of current:

Sources of energy:

Light

Human’s Eye and Colourful World