CTET EVS NCERT Short Notes: Snakes, Digestion, and Preservation

CTET EVS Notes

This part of our NCERT summary series covers essential facts from Class 5 Environmental Studies (EVS). These points are frequently asked in CTET Paper 1 and other state TET exams.

🐍 1. The Story of Snake Charmers (कालबेलिया समुदाय)

In NCERT Class 5, the community of snake charmers is highlighted for their traditional knowledge and relationship with nature.

• Kalbeliyas: Snake charmers are also known as Kalbeliyas.
• Dance Style: Their traditional dance is called 'Kalbelia', which features movements similar to those of a snake.
• Traditional Medicine: They collect herbs from the forest to make medicines for various ailments, including snake bites.
• Snakes & Farmers: Snakes are considered friends of farmers because they eat rats in the fields, protecting the crops.
• Poisonous Snakes in India: Only four types of snakes in India are poisonous:
  1. Cobra (नाग)
  2. Common Krait (करैत)
  3. Russel's Viper (दुबोइया - Duboiya)
  4. Saw-scaled Viper (अफाई - Afai)
• Anatomy of a Bite: Snakes have two hollow teeth called fangs. When they bite, the poison enters the body through these fangs.
• Antidote: The medicine for a snake bite is made from the snake's own poison and is available at all government hospitals.

🍽️ 2. From Tasting to Digesting (स्वाद से पाचन तक)

Understanding how our body processes food is a key part of the EVS curriculum.

• Stomach Temperature: The temperature inside our stomach is about 30°C.
• Nature of Digestive Juices: The digestive juices in the stomach are acidic in nature.
• Kalahandi District: Located in Odisha, this district is famous for growing the most rice in India. Ironically, many people there still live in poverty.
• Food Preservation:
  • Drying: Glass jars and bottles are dried thoroughly in the sun before filling them with pickles to remove any moisture.
  • Preserved Products: Items like pickles, Aam Papad (Mamidi Tandra), chutney, and juices are made to enjoy fruits like mangoes throughout the year.
  • Muslin Cloth: This fine cloth is traditionally used to strain liquids in the kitchen.

📚 Related Study Notes

Continue your preparation with other parts of this series:

• Part 1: Basic Concepts
• Part 2: Animals and Shelters
• Part 3: Plants and Biodiversity
• Part 4: Water and Environment
• Part 5: Historical Places
• Part 6: Travel and Community