The 30 marks of Environmental Studies (EVS) in CTET Paper 1 are divided cleanly into two halves: 15 marks of Content (NCERT Classes 3, 4, and 5) and 15 marks of Pedagogy. CBSE asks direct, recurring factual questions straight from the NCERT textbook stories. Here is your definitive high-yield revision digest.
Quick Answer: What are the 6 Themes of CTET EVS?
As mandated by NCF 2005, the primary EVS syllabus is structured around 6 broad human-centric themes rather than fragmented subjects: 1. Family and Friends (परिवार एवं मित्र) [with 4 sub-themes: Relationships, Work & Play, Animals, Plants], 2. Food (भोजन), 3. Shelter (आवास), 4. Water (जल), 5. Travel (यात्रा), and 6. Things We Make and Do (हम जो सोचते हैं और जो करते हैं).
High-Yield Animal Facts (Frequently Asked Questions)
1. Sloth (स्लॉथ)
- Looks like a bear but is not a bear. It is an arboreal mammal.
- Spends almost 17 hours a day sleeping while hanging upside down on a tree branch.
- Eats the leaves of the same tree on which it lives and barely needs anything else.
- Lives for about 40 years and in that time it moves around only eight trees in total.
- Comes down from the tree only once a week to relieve itself.
2. Elephants (हाथी)
- An adult elephant can eat more than 100 kilograms of leaves and twigs in a single day.
- Elephants do not rest much; they sleep for only 2 to 4 hours in a day.
- They love to play with mud and water because mud keeps their skin cool. Their large ear flaps act like fans to keep them cool.
- A 3-month-old baby elephant weighs around 200 kg.
- Herd Structure: An elephant herd consists only of female elephants and baby elephants. The oldest female is the leader of the herd. Male elephants leave the herd when they turn 14–15 years old. A herd typically has 10 to 12 females and calves.
3. Tiger (बाघ)
- A tiger can see 6 times better at night than most humans.
- Its whiskers (मूँछें) are extremely sensitive and can sense movements and vibrations in the air, helping it find prey in dark forests.
- A tiger’s ears can move in different directions to catch sounds from all around.
- Its roar can be heard up to 3 kilometers away.
- Tigers mark their territory with their urine, just like dogs and cats.
4. Venomous Snakes of India
Out of hundreds of snake species in India, only 4 types are poisonous:
- Cobra (नाग)
- Common Krait (करैत)
- Russell’s Viper (दुबोइया)
- Saw-scaled Viper (अफ़ाई)
A snake has two hollow poisonous teeth (fangs). Snake charmers are called Kalbeliyas. The anti-venom injection for snakebites is prepared from snake venom itself and is available in government hospitals.
Birds and Their Unique Nesting Habits
| Bird | Distinct Nesting / Behavioral Feature |
|---|---|
| Indian Robin (कलचिड़ी) | Builds its nest between stones on the ground using soft twigs, roots, wool, hair, and cotton wool. |
| Crow (कौआ) | Builds its nest high up on a tree using all kinds of materials, including wires and pieces of wood. |
| Koel (कोयल) | Does not build its own nest! It lays its eggs in a crow’s nest, and the crow hatches them along with its own. |
| Weaver Bird (दर्जिन चिड़िया / बुनकर पक्षी) | The male weaver bird weaves beautiful nests. The female inspects all of them and chooses the best one to lay eggs. |
| Tailor Bird (दर्जिन चिड़िया) | Uses its sharp beak to stitch together two leaves on a bush to create a pouch nest. |
| Sunbird (शकरखोरा) | Builds a nest that hangs from the branch of a small tree or bush, lined with hair, grass, and thin twigs. |
| Owl (उल्लू) | Can rotate its neck backwards to a very large extent (nearly 270°–360°). |
| Myna (मैना) | Moves its neck back and forth with a quick jerk (झटके से). |
High-Yield Plant & Forest Facts
1. Desert Oak (रेगिस्तानी ओक)
- Found in the dry regions of Australia.
- Its height is about 10–12 feet with very few leaves.
- Its roots go down nearly 30 times the tree’s height into the ground until they reach the water table.
- This groundwater is stored in the trunk of the tree. Local people insert a thin pipe into the tree trunk to drink water during droughts.
2. Pitcher Plant / Nepenthes (घटपर्णी)
- A carnivorous plant found in Australia, Indonesia, and Meghalaya in India.
- It has a pitcher-like shape covered with a leaf lid.
- It emits a pleasant aroma that attracts insects, frogs, and mice. When the creature sits on the mouth, it slips inside and gets trapped.
- It grows in nitrogen-deficient soil and traps creatures to fulfill its nitrogen requirement.
3. Khejadi Tree (खेजड़ी)
- Found predominantly in the desert areas of Rajasthan. It grows without much water.
- Its bark is used for making medicine; its wood is resistant to insects and pests.
- People of this region are called Bishnois, who fiercely protect animals and Khejadi trees.
Traditional Arts, Food & Inventions
- Madhubani Painting: Ancient folk art of Bihar. Painted using paste of powdered rice mixed with natural colors extracted from indigo, turmeric, flowers, and tree bark. Depicts humans, animals, trees, and birds.
- Pochampally & Kalamkari: Famous traditional woven sarees from Telangana / Andhra Pradesh.
- Braille Script: Invented by Louis Braille of France. Specially designed for visually impaired readers; consists of raised dots embossed on thick paper. Braille is based on 6 dots.
- Regional Food Delicacies:
- Ling-hu-fen: Snake meat dish eaten in Hong Kong.
- Tapioca (Kappa) & Coconut Curry: Eaten boiled in Kerala.
- Fish cooked in Mustard Oil: Famous in Kashmir.
- Fish cooked in Coconut Oil: Eaten in Goa.
Practice EVS Topic Quizzes on FundaPrep
Attempt timed, bilingual CTET EVS mock tests featuring all NCERT Class 3-5 map, animal, and direction questions.
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Frequently Asked Questions (FAQs) on CTET EVS NCERT Notes
What are the 6 main themes of CTET EVS according to NCF 2005?
The 6 main themes of the primary Environmental Studies (EVS) curriculum are: (1) Family and Friends (with 4 sub-themes: Relationships, Work and Play, Animals, Plants), (2) Food, (3) Shelter, (4) Water, (5) Travel, and (6) Things We Make and Do.
Which NCERT books are most important for CTET Paper 1 EVS?
Almost all 15 content-based questions in CTET Paper 1 EVS are asked directly from NCERT Class 3, Class 4, and Class 5 Environmental Studies (‘Looking Around’ / ‘आस-पास’) textbooks.
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