Topics
The Living World: Adaptations and Classification
- Biodiversity
- Adaptations and Its Types
- Adaptations of Plants
- Adaptation in Aquatic Plants (Hydrophytes)
- Adaptation in Desert Plants (Xerophytes)
- Adaptation in plants of snowy regions
- Adaptation in Forest Plants
- Adaptation in Grassland Plants (Mesophytes)
- Adaptation for Ingestion of Food in Plants
- Adaptation in Animals
- Adaptation in Aquatic Animals
- Adaptation in Forest and Grassland Animals
- Adaptation in Desert Animals
- Adaptation in animals of snowy regions
- Adaptation in Aerial Animals
- Adaptation in Reptiles
- Adaptation for Food in Animals
- Adaptation for Blending with the Surroundings
- Classification of Living Organisms
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Nomenclature
Plants: Structure and Function
Properties of Natural Resources
Nutrition in Living Organisms
- Nutrients and Nutrition
- Autotrophic Plants
- Symbiotic Plants
- Heterotrophic Plants
- Insectivorous Plants
- Saprophytic Plants
- Role of nutrients and effects of their deficiency on plants
- Transport System in Plants
- Nitrogen Fixation
- Nutrition in Animals
- Mode of Nutrition in Animals
- Holozoic Nutrition
- Saprozoic Nutrition
- Parasitic Nutrition
Food Safety
Measurement of Physical Quantities
Motion, Force and Work
Static Electricity
Heat
Disaster Management
Cell Structure and Micro-organisms
- Cell: Structural and Functional Unit of Life
- Measurement and observation of cells
- Plant Cell and Animal Cell
- Structure of the Cell
- Cell Wall - “Supporter and Protector”
- Plasma Membrane
- Cytoplasm - “Area of Movement”
- Nucleus - “Brain” of the Cell
- Endoplasmic Reticulum (ER)
- Golgi Apparatus - "The delivery system of the cell"
- Lysosome - “Suicidal Bag”
- Mitochondria - “Power House of the Cell”
- Non-living Substances Or Cell Inclusion
- Plastids
- Microorganisms (Microbes) and Microbiology
- Useful micro-organisms
- Harmful Microorganisms
- Pathogens: Disease-producing Micro-organisms
The Muscular System and Digestive System in Human Beings
- Muscular System
- Muscles and Its Types
- Human Digestive System
- The Mouth and Buccal Cavity
- The Teeth and Its Structure
- The Salivary Glands
- The Food Pipe/Oesophagus
- Pharynx/Throat
- The Stomach
- The Small Intestine
- Pancreas
- Liver
- The Large Intestine
- Important Glands of the Digestive System
- Effects of Tobacco, Alcohol, Smoking, on the Digestive System
Changes – Physical and Chemical
- Changes-Physical and Chemical
- Classification of Change: Natural and Man-made Changes
- Classification of Change: Harmful and Useful Changes
- Classification of Change: Slow and Fast Changes
- Classification of Change: Reversible and Irreversible Changes
- Classification of Change: Periodic and Non-periodic Changes
- Classification of Change: Physical Changes
- Classification of Change: Chemical Changes
- Corrosion of Metals
Elements, Compounds and Mixtures
Materials We Use
Natural Resources
Effects of Light
Sound: Production of Sound
Properties of a Magnetic Field
In the World of Stars
- Introduction
- Quantitative wastage of food
- Qualitative wastage of food
- Effective Ways to Prevent Food Wastage and Spoilage
Introduction:
India has made great progress in producing foods like cereals, fruits, vegetables, fish, milk, and milk products thanks to advancements in science and technology. However, many people in our country and around the world still face hunger. Some don’t even get one proper meal a day. Therefore, it is important for all of us to stop wasting food wherever we can.
Quantitative wastage of food:
Quantitative wastage refers to the loss of large amounts of food. This happens due to wrong farming methods, like hand sowing of seeds, improper storage, and poor distribution of food. For example:
- Seeds not planted properly may lead to fewer crops.
- Crops can spoil due to improper storage.
- Too much food is often cooked and served at events like weddings or festivals. Many times, this food goes to waste, even though it could have fed hungry people.
Qualitative wastage of food
Qualitative wastage happens when the quality of food is damaged. This occurs when food is not handled correctly, such as:
- Overcooking food destroys nutrients.
- Washing vegetables after cutting them can remove important vitamins.
- Using too many preservatives can harm food quality.
- Mishandling fruits like grapes and mangoes during transport.
- Incorrect calculation of delivery time, causing food to spoil before it reaches consumers.
Effective Ways to Prevent Food Wastage and Spoilage
- Serve yourself only as much as you can eat.
- Avoid overcooking food.
- Avoid throwing away leftover food. Reuse it in a proper way.
- Buy only as much grain, vegetables, fruits, milk, etc., as you need. Avoid the temptation to make excessive purchases.
- Store grains and other perishable foodstuffs like vegetables, fruits, milk, etc., using proper methods.
- Check the expiry date of bottled, canned, or packed food and use it within that time.
- Eat all the food that you have served yourself.
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