CBSE Class 4 EVS How Do We Get Food Worksheet

Ln 3: Where do babies come from?

Name the following:

Question 1. An insect which lives only for a few hours as an adult.
Answer: Mayfly
In simple words: Adult mayflies live for a very short time, sometimes only a few hours.

Exam Tip: Remember insect life spans; the mayfly is a classic example of an insect with an extremely short adult stage.

Question 2. The process by which living beings produce their own kind.
Answer: Reproduction
In simple words: Reproduction is how living things give birth to young ones like themselves.

Exam Tip: Learn this key biological definition thoroughly as it frequently appears in exams.

Question 3. A flying mammal that give birth to young ones.
Answer: Bat
In simple words: Bats are the only mammals that can fly and give birth to live babies.

Exam Tip: Do not confuse bats with birds; bats are mammals because they have hair and feed milk to their young.

Question 4. A mammal that lives in water and give birth to young ones.
Answer: Whale (or Dolphin)
In simple words: Whales live in the water, but they are mammals that give birth to live young.

Question 5. A place where homeless children get shelter.
Answer: Orphanage
In simple words: An orphanage is a home that takes care of children who have no parents.

Exam Tip: Associate the term 'orphan' with children without parents to easily remember 'orphanage'.

Fill in the blanks:

Question 1. Animals who feed their babies with their milk are called ________
Answer: Mammals
In simple words: Animals that produce milk to feed their young ones are known as mammals.

Exam Tip: The presence of mammary glands is the defining characteristic of mammals.

Question 2. Some animals reproduce by laying eggs. They are called ________ animals or ________ animals.
Answer: Egg-laying, Oviparous
In simple words: Animals that lay eggs are also called egg-laying or oviparous animals.

Exam Tip: Learn both terms ('egg-laying' and 'oviparous') as either might be expected.

Question 3. All ________ things produce young ones of their own kind.
Answer: Living
In simple words: Every living creature reproduces to keep its species alive.

Exam Tip: Reproduction is one of the essential characteristics of all living organisms.

Question 4. ________ a child means to become legal parents of that child.
Answer: Adopting
In simple words: Taking legal responsibility for a child who is not biologically yours is called adoption.

Question 1. Match the adult animals with their young ones:
1. Deer - e. fawn
2. Lion - a. cub
3. Hen - d. chick
4. Kangaroo - c. joey
5. Cow - b. calf
6. Goose - h. gosling
7. Sheep - f. lamb
8. Horse - g. foal
Answer: 1-e, 2-a, 3-d, 4-c, 5-b, 6-h, 7-f, 8-g
In simple words: Different animals have specific names for their babies.

Exam Tip: Memorize young animal names carefully as matching exercises are very common.

Ln. 5 TEETH

NAME THE FOLLOWING:

Question 1. Name the parts of a Tooth: a. ________ b. ________ c. ________
Answer: a. Crown, b. Neck, c. Root
In simple words: A tooth is divided into three main parts: crown, neck, and root.

Exam Tip: Remember the structural divisions of a tooth from top to bottom.

Question 2. The hardest substance in our body.
Answer: Enamel
In simple words: The shiny outer covering of our teeth is called enamel, and it is very hard.

Exam Tip: Enamel protects the inner sensitive parts of our teeth.

Question 3. The doctor who looks after our teeth:
Answer: Dentist
In simple words: A dentist is a doctor who treats dental and oral problems.

Exam Tip: Associate dental care directly with a dentist.

Question 4. A disease that attacks teeth forming holes in hard enamel.
Answer: Tooth decay (or Dental caries)
In simple words: Cavities and tooth decay happen when bacteria damage the enamel.

Question 5. A doctor who put braces on the crooked teeth to correct them.
Answer: Orthodontist
In simple words: An orthodontist specializes in straightening crooked teeth using braces.

Exam Tip: Distinguish between a general dentist and an orthodontist.

Question 6. Name two flesh - eating animals.
Answer: a. Lion, b. Tiger (or Wolf, Leopard)
In simple words: Carnivores or flesh-eating animals hunt other animals for food.

Exam Tip: Flesh-eating animals have sharp, pointed canines to tear meat.

Question 7. Name two grass - eating animals.
Answer: a. Cow, b. Horse (or Goat, Sheep)
In simple words: Herbivores or grass-eating animals feed on plants and grass.

Exam Tip: Grass-eating animals have wide, flat grinding teeth.

Question 8. Name an animal which have teeth only in the upper jaw.
Answer: Frog (or Tortoise)
In simple words: Some animals like frogs do not have teeth in their lower jaw.

Question 9. Name the two sets of teeth in human beings.
Answer: a. Milk teeth (temporary teeth), b. Permanent teeth
In simple words: Humans get two sets of teeth in their lifetime: temporary milk teeth and permanent teeth.

Question 10. Name four types of teeth in human beings.
Answer: a. Incisors, b. Canines, c. Premolars, d. Molars
In simple words: Humans have four kinds of teeth for biting, tearing, and grinding food.

Exam Tip: Learn the spelling and function of each of the four tooth types.

Fill in the blanks:

Question 1. Milk teeth are also called ________.
Answer: Temporary teeth
In simple words: Milk teeth are temporary because they fall out as a child grows.

Exam Tip: There are 20 milk teeth in total.

Question 2. A full set of adult teeth consists of ________ teeth.
Answer: 32
In simple words: Adults have thirty-two permanent teeth in their mouth.

Question 3. The portion of teeth inside the gum is called the ________.
Answer: Root
In simple words: The root anchors the tooth firmly inside the jawbone and gum.

Exam Tip: The root is hidden beneath the gum line.

Question 4. Tongue helps us to ________ food.
Answer: Taste (and swallow / mix with saliva)
In simple words: Our tongue helps us taste food and push it down our throat.

Exam Tip: The tongue is a muscular organ with taste buds.

Write true or false:

Question 1. Fruits and vegetables are good for teeth.
Answer: True
In simple words: Eating healthy fruits and vegetables keeps teeth and gums strong.

Exam Tip: Crunchy vegetables help clean teeth naturally.

Question 2. Tooth decay makes the mouth smell good.
Answer: False
In simple words: Tooth decay causes bad breath due to bacterial growth.

Exam Tip: Bad breath is a sign of poor oral hygiene.

Question 3. We should brush our teeth twice a day.
Answer: True
In simple words: Brushing morning and night keeps teeth clean and healthy.

Question 4. Canines are not sharp pointed teeth.
Answer: False
In simple words: Canines are sharp and pointed to help tear flesh.

Exam Tip: Animals that eat meat have very prominent canines.

Question 5. Incisors cut and slice food.
Answer: True
In simple words: Incisors are the front flat teeth used for biting and cutting food.

Exam Tip: There are 8 incisors in total, 4 in each jaw.

Question 6. Teeth do not improve our physical appearance.
Answer: False
In simple words: Teeth give proper shape to our face and make our smile look good.

Exam Tip: Losing teeth can alter facial structure and speech.

Question 7. Teeth help us to bite, cut and chew different kinds of food.
Answer: True
In simple words: Different types of teeth work together to break down food for digestion.

Exam Tip: Chewing food thoroughly is the first step of digestion.

Question 8. The portion between crown and root is neck.
Answer: True
In simple words: The neck is the middle part joining the crown and the root.

Question 1. Grass - eating animals have (tearing teeth / grinding teeth)
(a) tearing teeth
(b) grinding teeth
Answer: (b) grinding teeth
In simple words: Herbivores have flat grinding teeth to chew tough grass and plants.

Exam Tip: Match teeth type with the animal's diet.

Question 2. Milk teeth starts to grow when the child is about (6 months / 2 years)
(a) 6 months
(b) 2 years
Answer: (a) 6 months
In simple words: Babies start getting their first milk teeth around six months of age.

Question 3. We wear this to make crooked teeth straight. (brace or plate / Spectacles)
(a) brace or plate
(b) Spectacles
Answer: (a) brace or plate
In simple words: Orthodontists use braces to align crooked teeth.

Exam Tip: Spectacles are used for vision correction, not teeth.

Question 4. These are the sharp edged teeth present in front in each jaw. (incisors / molars)
(a) incisors
(b) molars
Answer: (a) incisors
In simple words: Incisors are positioned right at the front for biting food.

Exam Tip: Front teeth are always incisors.

Question 5. By the time a child is about 12 to 13 years old. He has (32 permanent teeth / 28 permanent teeth)
(a) 32 permanent teeth
(b) 28 permanent teeth
Answer: (b) 28 permanent teeth
In simple words: Wisdom teeth appear much later, so pre-teens typically have 28 permanent teeth.

Exam Tip: Wisdom teeth (the last 4 molars) come in between ages 17 and 25.

COMPLETE THE TABLE

Ln 8: How we gets food

Fill in the blanks:

Question 1. Kerala is known as the land of ________.
Answer: Spices
In simple words: Kerala produces a wide variety of spices, earning it the title of land of spices.

Exam Tip: Spices add aroma, color, and flavor to food.

Question 2. ________ add flavor to our food.
Answer: Spices (or Herbs)
In simple words: Spices make our meals tasty and flavorful.

Exam Tip: Common spices include cardamom, pepper, and cloves.

Question 3. Weeds are ________ plants.
Answer: Unwanted
In simple words: Weeds grow on their own and harm useful crops.

Exam Tip: Farmers remove weeds so crops get enough water and nutrients.

Question 4. ________ was started by Guru Amar Das.
Answer: Langar (community kitchen)
In simple words: Guru Amar Das established the tradition of community kitchen where everyone eats together.

Question 5. ________ meals are served in primary schools in India.
Answer: Mid-day
In simple words: Government schools provide free mid-day meals to young students.

Exam Tip: Mid-day meal scheme encourages school attendance and nutrition.

Question 6. ________ is the first state in India where the mid-day meals were started.
Answer: Tamil Nadu
In simple words: Tamil Nadu pioneered the mid-day meal program in India.

Exam Tip: Remember Tamil Nadu as the pioneer state for mid-day meals.

Question 7. Only ________ food is served at the langar.
Answer: Vegetarian
In simple words: Pure vegetarian food is served to all visitors at a langar.

Exam Tip: Langar meals are simple, nutritious, and vegetarian.

Name the following:

Question 1. Name any two spices which can be recognized by smelling: a. ________ b. ________
Answer: a. Cardamom, b. Cloves (or Cumin, Cinnamon)
In simple words: Strong aromatic spices can be easily identified by their scent.

Exam Tip: Aroma is a key feature of spices like cardamom and cloves.

Question 2. Name any two spices which can be recognized by tasting: a. ________ b. ________
Answer: a. Black pepper, b. Chilli powder
In simple words: Spices like pepper and chilli give a sharp taste.

Exam Tip: Taste helps distinguish spicy and pungent seasonings.

Question 3. Name the state which is known as the land of spices.
Answer: Kerala
In simple words: Kerala is famous for growing abundant spices.

Exam Tip: Connect Kerala with spices.

Question 4. Name the unwanted plants.
Answer: Weeds
In simple words: Unwanted plants growing in fields are weeds.

Exam Tip: Weeds compete with crops for sunlight and soil nutrients.

Write true or false:

Question 1. Weeds are useful.
Answer: False
In simple words: Weeds are harmful because they damage the main crops.

Exam Tip: Always remember weeds are unwanted and harmful.

Question 2. Salt is a spice.
Answer: False
In simple words: Salt is a mineral, not a spice.

Question 1. Complete the food supply chain flow chart:
Farmer produces crops
\(\downarrow\)
Wholesaler / Trader buys in bulk
\(\downarrow\)
Transporter carries food to markets
\(\downarrow\)
Shopkeeper sells food to us
\(\downarrow\)
Consumer / Family cooks and eats food
Answer: Steps in order: Wholesaler, Transport, Shopkeeper, Consumer.
In simple words: Food reaches our plates traveling from farms through traders and shopkeepers.

Exam Tip: Learn the sequence of how food travels from farm to home.

Choose the correct answer:

Question 1. Weeds are (wanted / unwanted) plants.
(a) wanted
(b) unwanted
Answer: (b) unwanted
In simple words: Weeds are unwanted plants in agricultural fields.

Exam Tip: Unwanted plants = weeds.

Question 2. Only (vegetarian / non-vegetarian) food is served in the langar.
(a) vegetarian
(b) non-vegetarian
Answer: (a) vegetarian
In simple words: Langars serve simple, wholesome vegetarian meals.

Exam Tip: Community kitchens maintain vegetarian menus for inclusivity.

Question 3. In a langar, people from all walks of life (eat together / eat alone).
(a) eat together
(b) eat alone
Answer: (a) eat together
In simple words: People sit together in rows to share meals, promoting equality.

Exam Tip: Langar embodies the spirit of community sharing.

Ln 7: Water sources

Fill in the blanks:

Question 1. ________ is the ultimate source of water on earth.
Answer: Rain
In simple words: Rain is the primary source that fills all water bodies on Earth.

Exam Tip: Rain originates from clouds formed by evaporated water.

Question 2. ________ is taking place all the time.
Answer: Evaporation
In simple words: Water from oceans and rivers constantly evaporates into the air.

Exam Tip: Evaporation is a continuous part of the water cycle.

Question 3. ________ and ________ bring out underground water.
Answer: Tube wells, Hand pumps (or Wells)
In simple words: Hand pumps and tube wells draw groundwater up to the surface.

Exam Tip: Groundwater is accessed through wells and pumps.

Question 4. We get filtered and purified drinking water from ________ in our houses.
Answer: Taps (or Water purifiers)
In simple words: Municipal supply provides treated tap water for daily use.

Exam Tip: Tap water in cities is usually filtered before supply.

Question 5. ________ at the bottom of the well help to filter the water.
Answer: Sand and gravel
In simple words: Layers of sand and gravel naturally filter well water.

Exam Tip: Natural filtration removes solid impurities from groundwater.

Question 6. Salt is obtained from ________ by letting it flow into the water.
Answer: Sea water (or Shallow ponds / pans)
In simple words: Seawater is collected in shallow beds where the sun evaporates the water, leaving salt behind.

Exam Tip: Solar evaporation is used to make salt.

Question 7. A tube well uses ________ to draw out underground water.
Answer: Electricity (or Pump/Motor)
In simple words: Tube wells use electric pumps to pump up water from deep underground.

Exam Tip: Hand pumps use manual force, while tube wells use electricity.

Question 8. ________ are formed after a rainfall.
Answer: Puddles (or Streams / Ponds)
In simple words: Rainwater collects in small hollows on the ground to form puddles.

Exam Tip: Puddles dry up due to evaporation.

Question 9. The puddles dry up because of ________ of water by the heat of the sun.
Answer: Evaporation
In simple words: Heat from the sun turns puddle water into vapor.

Exam Tip: Evaporation turns liquid water into gas.

Question 10. Rain water that seeps into the earth is known as ________.
Answer: Underground water (or Groundwater)
In simple words: Water that goes deep into the soil becomes groundwater.

Exam Tip: Groundwater is an essential source of fresh water.

Question 11. Water from open well is not ________ for drinking.
Answer: Safe
In simple words: Open well water may contain germs and dirt, making it unsafe to drink directly.

Exam Tip: Water should be boiled or purified before drinking.

Name the following:

Question 1. Name the chief source of water on the Earth.
Answer: Rain
In simple words: Rain is the primary source supplying water to our planet.

Exam Tip: Always remember rain as the chief source of water.

Question 2. Name two small water bodies.
Answer: Pond, Stream (or Brook, Pool)
In simple words: Ponds and streams are smaller bodies of water.

Exam Tip: Distinguish between small water bodies and vast oceans.

Question 3. Name two large water bodies.
Answer: Sea, Ocean
In simple words: Seas and oceans hold massive amounts of water.

Exam Tip: Oceans cover the majority of the Earth's surface.

Question 4. Name two methods by which underground water is obtained.
Answer: Hand pump, Tube well (or Well)
In simple words: People use hand pumps and tube wells to access groundwater.

Exam Tip: Mention mechanical and manual drawing methods.

Write true or false:

Question 1. Pond water is the main source of water on the earth.
Answer: False
In simple words: Rain is the main source of water, not ponds.

Exam Tip: Ponds collect rainwater but are not the primary source.

Question 2. Ponds, seas, lakes water is safe for drinking.
Answer: False
In simple words: Natural water bodies contain impurities and germs, making them unsafe without purification.

Exam Tip: Always filter and boil drinking water.

Question 3. Underground water is obtained from sea water.
Answer: False
In simple words: Underground water comes from rainwater that seeps into the ground.

Exam Tip: Seawater is salty and stays in oceans and seas.

Question 4. Salt is obtained from sea water.
Answer: True
In simple words: Common salt is extracted by evaporating seawater.

Exam Tip: Seawater contains dissolved salt crystals.

Question 5. During the rainy season clothes take a long time to dry.
Answer: True
In simple words: High moisture and lack of sunlight slow down evaporation in rainy weather.

Exam Tip: Humidity prevents clothes from drying quickly.

Question 6. Underground water remains below the surface of the Earth.
Answer: True
In simple words: Groundwater is stored beneath the soil and rocks.

Exam Tip: Wells tap into this underground reservoir.

Question 7. Tap water is the only kind of water safe for drinking.
Answer: False
In simple words: Filtered, boiled, or purified water from any safe source is good for drinking.

Question 1. Two diseases caused by water pollution: a. ________ b. ________
Answer: a. Cholera, b. Typhoid (or Jaundice, Diarrhoea)
In simple words: Drinking polluted water spreads water-borne diseases like cholera and typhoid.

Exam Tip: Remember common water-borne illnesses for exams.

Question 2. A large mass of water.
Answer: Ocean (or Sea)
In simple words: Oceans are vast, continuous bodies of saline water.

Exam Tip: Oceans cover most of the Earth.

Question 3. The largest river of India.
Answer: Ganga
In simple words: The Ganga is India's longest and most revered river.

Exam Tip: Learn major Indian rivers and their importance.

Question 4. Two sea animals: a. ________ b. ________
Answer: a. Whale, b. Shark (or Dolphin, Octopus)
In simple words: Whales and sharks live in marine waters.

Exam Tip: Marine animals are adapted to saltwater habitats.

Question 5. Ganga of the south.
Answer: Godavari (or Kaveri)
In simple words: The Godavari river is often referred to as the Ganga of South India.

Exam Tip: Note geographical nicknames of Indian rivers.

Fill in the blanks:

Question 1. ORS stands for ________.
Answer: Oral Rehydration Solution
In simple words: ORS is a life-saving drink given to restore body fluids during dehydration.

Exam Tip: Learn the full form of ORS accurately.

Question 2. Ganga is the holiest river of the ________.
Answer: Hindus (or India)
In simple words: The Ganga holds deep spiritual significance in India.

Exam Tip: Cultural and religious associations with rivers are important in EVS.

Question 3. Sea water is ________.
Answer: Salty (not fit for drinking)
In simple words: Ocean water contains high amounts of dissolved salts.

Exam Tip: Seawater cannot be used directly for drinking or agriculture.

Question 4. Dysentery is caused by ________ pollution.
Answer: Water
In simple words: Drinking contaminated water leads to digestive infections like dysentery.

Exam Tip: Connect water pollution directly with water-borne diseases.

Write true or false:

Question 1. Water should be boiled or filtered before drinking.
Answer: True
In simple words: Boiling or filtering kills germs and makes water safe to drink.

Exam Tip: Always consume purified water to stay healthy.

Question 2. We should wash clothes in a river.
Answer: False
In simple words: Washing clothes and bathing in rivers pollutes the water.

Exam Tip: Human activities near water sources cause water pollution.

Question 3. ORS solution is given to a person who is having loose motions and vomiting.
Answer: True
In simple words: ORS helps recover lost body salts and water during illness.

Exam Tip: ORS prevents dangerous dehydration.

Question 4. Environment friendly soaps should not be used.
Answer: False
In simple words: Environment-friendly soaps are safe because they do not harm nature or pollute water.

Exam Tip: Eco-friendly products protect our environment.

Question 5. Brahmaputra together with Kaveri forms the world's biggest delta at Sunderbans in West Bengal.
Answer: False
In simple words: The Sunderbans delta is formed by the Ganga and Brahmaputra rivers, not the Kaveri.

Exam Tip: Remember Ganga and Brahmaputra form the Sunderbans delta.

Question 6. Sea water can be used for drinking.
Answer: False
In simple words: Seawater is too salty for drinking or watering plants.

Exam Tip: Only freshwater is potable (drinkable).

Ln. 12. Travel to another country / Money

Fill in the blanks:

Question 1. ________ is the capital of Oman.
Answer: Muscat
In simple words: Muscat is the capital city of the country Oman.

Exam Tip: Learn capitals of major countries discussed in your textbook.

Question 2. The study of ________ is known as numismatics.
Answer: Coins and medals (or Currency)
In simple words: Collecting and studying coins and currency is called numismatics.

Exam Tip: Remember the term numismatics for coin collection.

Question 3. ________ is known as the "father of our nation".
Answer: Mahatma Gandhi
In simple words: Mahatma Gandhi is honored as the Father of the Nation in India.

Question 4. Only ________ trees can be seen in Muscat.
Answer: Date palm
In simple words: Date palm trees grow easily in the hot, desert climate of Muscat.

Exam Tip: Date palms thrive in arid desert regions.

Question 5. You will find the National ________ and the picture of ________ on every currency note.
Answer: Emblem, Mahatma Gandhi
In simple words: Indian currency notes feature the National Emblem and Mahatma Gandhi's portrait.

Exam Tip: Observe Indian currency notes to identify these features.

Question 6. Coins and notes contain our ________.
Answer: Currency (or National symbol / Value)
In simple words: Coins and paper notes represent the official currency of the country.

Exam Tip: Currency is issued by the government and central bank.

Question 7. There is ________ on the left side of the wheel and ________ on the right side.
Answer: Horse, Bull (on the Ashoka Pillar / National Emblem)
In simple words: The National Emblem features animals like a horse and a bull beside the wheel.

Exam Tip: Study the details of the National Emblem carefully.

Question 8. ________ is very cheap in Muscat.
Answer: Petroleum (or Oil / Petrol)
In simple words: Oil is abundant in Gulf countries like Oman, making petroleum very inexpensive there.

Question 1. River Mandovi is in
(a) Mumbai
(b) Goa
(c) Pune
Answer: (b) Goa
In simple words: The Mandovi river flows through the state of Goa.

Exam Tip: Associate River Mandovi with Goa.

Question 2. When was Mahatma Gandhi born?
(a) 2 October 1869
(b) 2 December 1869
Answer: (a) 2 October 1869
In simple words: Mahatma Gandhi was born on October 2, 1869.

Exam Tip: Gandhi Jayanti is celebrated nationwide on October 2nd.

Question 3. What is written below our National Emblem?
(a) Bande Mataram
(b) Satyameva Jayate
Answer: (b) Satyameva Jayate
In simple words: 'Satyameva Jayate' (Truth alone triumphs) is inscribed below our National Emblem.

Exam Tip: Remember our national motto is Satyameva Jayate.

Question 4. The packet Garima's aunt had brought for her had
(a) biscuits
(b) dates
(c) chocolates
Answer: (b) dates
In simple words: Garima's aunt brought a packet of sweet dates from Muscat.

Question 1. Muscat is a desert area.
Answer: True
In simple words: Muscat has a hot, dry desert landscape.

Exam Tip: Muscat experiences very little rainfall.

Question 2. Petroleum is very costly in Muscat.
Answer: False
In simple words: Petroleum is cheap in Muscat because crude oil is produced locally.

Exam Tip: Oil-producing nations have low fuel prices.

Question 3. There is little or no rainfall in Muscat.
Answer: True
In simple words: Muscat receives very scarce rainfall throughout the year.

Exam Tip: Arid regions experience minimal rain.

Question 4. Muscat has tall buildings.
Answer: True
In simple words: Modern Muscat features tall buildings, offices, and hotels.

Exam Tip: City developments include modern architecture.

Question 5. Money is made by the government in a mint.
Answer: True
In simple words: Government mints manufacture official coins and currency.

Exam Tip: Mints produce coins while note presses print paper currency.

Question 6. In order to pay someone we use notes and coins.
Answer: True
In simple words: Cash transactions involve physical notes and coins.

Exam Tip: Currency acts as a medium of exchange.

Question 7. The money can be in the form of coins only.
Answer: False
In simple words: Money exists in both paper note and coin formats.

Exam Tip: Currency includes both coins and paper notes.

Question 8. Mahatma Gandhi fought British through non-violence.
Answer: True
In simple words: Mahatma Gandhi led India's freedom struggle using peaceful, non-violent methods.

Exam Tip: Ahimsa (non-violence) was Gandhi's core principle.