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Environmental Studies

Birds and their Specific Features – Environmental Studies (EVS)

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Dear readers, in this post Birds and their specific features for environmental studies are given. Birds have feathers, toothless beaked jaws, a four-chambered heart. They breathe through lungs like reptiles, fishes and amphibian. Their boat shaped body, hollow bones wings, feathers help them in flying. They have high metabolic rate and a strong yet lightweight skeleton. They also possess invisible hair and reproduces by Oviparous method (laying of eggs). Examples are parrot, sparrow, pigeon, eagle etc.

Birds sits on the branches of trees. It’s claws are made so that it helps in grasping the branches of trees.

Birds have fixed eye position, they rotate their neck in order to see in different direction. Among all the birds Owls can rotate their neck nearly upto 360 degree but myna can move its neck back and front with jerk.

Birds can see at different direction at a time as they have eyes on the left and right side of the face.

Also read – Animals and their special characteristics – Environmental Studies (EVS)

Specific Features of some Birds

  • Some special birds like kites, vulture, eagles can see things four time more than humans.
  • Owl, raccoon birds can see only black and white colors.
  • The Ostrich is the largest bird in the world. It also lays the largest eggs and has the faster maximum running speed of nearly 97 kph.
  • The chicken is the most common species of bird found in the world.
  • The Bee Humming bird is the smallest living bird in the world,with a length of just 5 cm.
  • The humming birds can fly backwards.
BirdsSpecial Characteristics
Owl, MynaNeck Rotation
Eagle, Kite, VultureSharp eyesight
PeacockOmnivorous bird
Penguin and EmuWithout flight birds

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BirdsNest
CrowOn highest tree
BulbulsIn bushes
RobinSoft grasses, fibers, yarn, cotton etc
Koel (Cuckoo)Lays its egg in the nest of crow
Baya weaver (Soan chidiya)Make hanging nest
Weaver birdWeave the nest
WoodpeckerMake their nest in the bark of tree

Special Characteristics of Peacock

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  • The peacock is the National bird of India.
  • Peacock posses unique anatomy which makes them beautiful birds.
  • Peacocks are omnivorous birds, and they mainly eat plants, fruits, seeds, flower petals, ants,insect, and other scraps in the gardens and forests.
  • Grains are the most common food of peacocks.
  • Peacock also eat small reptiles, such as young cobra snakes, amphibians, butterflies, chicken, flies and mice vole.

Brood Parasite

These are organisms that rely on the others  to raise their Chick . Brood parasitism is a habit of a bird, which does not make its own nest, lays eggs in other bird’s nest secretly and relies on the host bird to raise the chick.  Koel is a brood parasite over crow for development and hatching of its eggs.

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Environmental Studies

Animals and their special characteristics – Environmental Studies (EVS)

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There are various types of animals in the world. Some animals have their special characteristics. Animals and their characteristics are given below in this post. These animals characteristics are important for competitive examinations like CTET, UPTET, TET, KVS etc.

1 – Elephant

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Elephants is herbivorous (feed on plants) animal. One elephant can eat 300 pounds (136 kg) of food in one day. They drinks about 2 gallons(7.5 litres) of water at  a time. Elephants sleep and rest less to maintain body temperature. They have large ear flaps which help to control their body temperature. Elephant trunk is elongated nose and upper lip.

Female tend to live in family groups. Leader of group is the oldest female elephant. Male leaves their family group when they reach puberty. Calves are the centre of attention in their family group and rely on their mother for as long as 3 years. Their life span is about 70 years.

2 – Chimpanzee

Chimpanzee is a very clever animal. They live in groups of 3 to 80 members. Elder male is the leader of the group. Their life span is about 50 years.

3 – Giraffe

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Giraffe is tallest mammal of the earth. Their height is about 5 meter. They sleep for very less time (2 hrs in 24 hrs). They can eat around 25 kg leaf in a day. Their life span is about 25 years.

4 – Whale

Blue whale is the largest animal of earth. They are mammals. Their life span is about 90 years.

5 – Earthworm

An earthworm is a tube shaped segmented worm. They live in soil. They feed live and dead organic matter. Earthworm improve soil fertility by converting large organic matter into rich humus. Hence they are also considered farmers’s friend. Earthworms are useful in making vermicompost also. Their life span is about 8 years.

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6 – Dolphin

Dolphins are mammals. Dolphin live in social groups of 5 to several hundred members. They use echolocation to find prey and communicate with each other in water. Gangetic dolphin is national water animal of India and it is said to represent the purity of holy Ganga river as it can only survive in pure and fresh water. Their life span is about 25 years.

7 – Tiger

Tiger is known as king of the forest. Tiger may  consume upto 40 kg (88 pond) of  meat at one time. It has two times more sight capacity than humans in night. For hearing they can move their ears in different direction. Their roar can be hear  upto 3 kms. Their life span is about 26 years.

8 – Rhinoceros

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Rhinoceros is second longest terrestrial animal after elephant. Rhinoceros are herbivorous (feed on plants). Their weight may be 1000 kg. They have around 1 ½ cm thick skin. They have one horn on nose hence called as rhino. Their life span is about 50 years.

9 – Sloth

Sloth are mammals which looks like beer. Sloth are nocturnal (active at night) animal. They sleep around 17 hrs in day time. They are good swimmer and their life span is about 25 years.

Sloth make very good habitat for other organisms and a single may be home several species of moths, beetles, cockroaches, fungi and algae.

Also read – Animals under Environmental Studies (EVS)

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Environmental Studies

CTET Previous Years Questions on Environmental Studies with Answer

Previous Years Questions

Hello readers, following are the CTET Previous Years Questions on Environmental Studies with Answer. These CTET previous years questions on EVS are important questions for CTET, UPTET and other TET exams. Answers of these questions are given in the last of the post.

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CTET Previous Years Question on Environmental Studies (EVS)

1- In the villages of Bihar many farmers do bee-keeping and collect honey to earn extra, money. The best time to start bee-keeping is
a) July to September
b) October to December
c) January to March
d) April to June

2- The animals that are awake at night can see objects
a) In red colour only
b) In all colours
c) Only in Black and White colour
d) In green colour only

3- The bird move their neck very often because
a) Their ears are covered with feathers
b) They can fly
c) The birds eyes are fixed
d) The birds have small eyes

4- A bird makes its nest high up on a tree.This bird could be
a) Sunbird
b) Indian Robin
c) Crow
d) Dove

5- Which one of the following birds can rotate its neck backwards to a large extent?
a) Owl
b) Mynah
c) Crow
d) Koel

Also read – भारत में नदियों के किनारे बसे शहर/ Nadiyon ke Kinare base Sahar

6- Which of the following statements is correct about elephants?
a) Elephants like to take too much rest because of their heavy bodies
b) A three months old baby elephant generally weights about 2 quintals
c) An adult elephant can eat even more than 2 quintals of leaves and twigs in one day
d) Elephant sleep for 8 to 10 hrs in a day

7- Some birds can see four times as far as we can see. These birds are
a) Crow, kites, nightingales
b) Eagles, pigeons, parrot
c) Kites, eagles, vultures
d) Doves, crows, peacocks

8- Which one of the following insect does not live together in a colony like honeybees?
a) Ant
b) Wasp
c) Termite
d) Spider

9- Which one of the following animals front teeth keep on growing throughout its life? It has to keep gnawing on things to keep its teeth from becoming too long.
a) Termite
b) Lizard
c) Squirrel
d) Rat

10- An egret sits on buffalo, because
a) The egret and the buffalo have symbiotic relationship
b) The egret sits on the buffalo for fun
c) The buffalo helps in the transportation of the egret from one place to another
d) The egret wants to scare the buffalo.

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11- Cooked rice can be preserved for longer time in a refrigerator because
a) Moisture content in the food is reduced at low temperature
b) Refrigerators contain certain chemicals which kill the microbes
c) Microbes are destroyed and killed at low temperature
d) Microbes become inactive at low temperature

12- Which one of the following matches is not a correct way of food preservation?
a) Potato-chips
b) Milk-paneer
c) Apple-jam
d) Raw mango-pickle

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13- Glass jars and bottle are dried well in the sun before filling them with pickles. Why is it so?
a) To make pickle tasty
b) To remove the dust from them
c) To remove the moisture completely
d) To increase their temperature

14- Mira loves mangoes. She wants to preserve these for winters. Which one of the following is a good way of preserving them?
a) Store in a refrigerator
b) Put in a plastic bag
c) Make aam papad and pickle
d) Prepare juice and store in an airtight container

15- Select from the following a group that comprises of methods of cooking food.
a) Boiling, kneading, roasting
b) Baking, boiling, rolling
c) Frying, soaking, roasting
d) Backing, frying, roasting

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16- While discussing liking and disliking a student says, ‘I and mother both love to eat snakes. Whenever, we feel like eating snakes, we go to a nearby hotel and eat Ling-hu-fen. This student must belong to
a) Assam
b) Orissa
c) Hong kong
d) Arunachal pradesh

17- Carrot, radish, sweet potatoes are the modification of
a) Stem
b) Buds
c) branches
d) Root

18- If a teacher employs the examples of potato, rice, bfread and sugar, what he intends to teach?
a) vitamins
b) Proteins
c) Minerals
d) Carbohydrate

Ans: 1(d), 2(c), 3(c), 4(c), 5(b), 6(b), 7(c), 8(d), 9(c), 10(a), 11(d), 12(b), 13(c), 14(c), 15(d), 16(c), 17(d), 18(d)

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Environmental Studies

Animals under Environmental Studies (EVS)

Topic Animals under Environmental Studies for various competitive examinations mainly CTET, UPTET and Other TETs. Animal Groups, Classification of Animals, Habitat of Animals, Respiration Organs, Benefits, Sense Organs in Animals are given below:

Animal Groups

Animals are divided in following six groups.

  1. Fishes
  2. Reptiles
  3. Birds
  4. Insects
  5. Mammals
  6. Amphibians

Animal Groups

Also Read: भारत में नदियों के किनारे बसे शहर/ Nadiyon ke Kinare base Sahar

Habitat of Animals

A habitat is a place where living things live. Animals live in habitats where they are adapted most. Habitat of animals are classified as below:

  • Land Animals
  • Water Animals
  • Land and Water Animals
  • Air Habitat Animals
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Classification of Animals

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Respiration Organ in Animals

AnimalsRespiratory Organ
FrogLung and Skin
Flies Haikia
Earthworm Skin
Human, Lion, Snakes, BirdsLungs
Octopus, FishGills
Whale, DolphinLungs, Nose

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Benefits with Animals

Animals Benefits
BeesHoney and Wax
SilkwormSilk
Cow , Buffalo, Goat, Hen, Duck, FishMilk, Meat, Egg
EarthwormFarmer Friend
Crow, Dog, Kite, Vulture, EagleCleaning Animals
Sheep, Goat, Camel, RabbitKnitting yarn
Cow, bull, Buffalo,SheepLeather
LakhwormLakh

Also Read: CTET Questions on Growth and Development

Sense Organs and Stimulation in Animals

Mainly there are 5 types of sense organs in animals which are eyes, ears, nose, tongue and skin. These sense organs help animals for various activities as below:

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  • Ants can recognize there groups by odour released by ants.
  • Some insects like silkworm can identify female from their smell.
  • Some birds like eagle, vulture can see four times more than humans, which help them to identify their targets.
  • Birds can see two different images at the same time because they have eyes on both the side of their head.
  • Elephant uses their ears to blow air along with listening.
  • Snakes can’t listen so they absorb vibrations from earth to determine the danger.
  • Nocturnal animals (Owl, Raccoon) can only see white and black colour.
  • Mosquito find a human in dark by heat of the feet and smell of the body
  • Dog, Lion and Tiger can identify their area by smell of their excreta.
  • Frog and Lizard use their tongue to catch their hunt.
  • Cockroach has the organism to walk and fly.

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General Awareness Kids Learning Other for Kids

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