CBSE Class 4 EVS Where Do Babies Come From Worksheet

Fill in the blanks:

Question 1. The process by which living beings produce their own kind is called ________________.
Answer: reproduction
In simple words: Reproduction is how living organisms create more of their own kind to continue their species.

Exam Tip: Learn the exact biological term 'reproduction' for this definition.

Question 2. Animals that give birth to young ones directly are called____________
Answer: viviparous animals
In simple words: Viviparous animals give birth to fully formed babies instead of laying eggs.

Exam Tip: Remember that mammals like humans, cows, and dogs are viviparous.

Question 3. Viviparous animals also called as _____________________
Answer: milk-producing animals / mammals
In simple words: Animals that give direct birth are mammals that feed their babies milk.

Exam Tip: Mammals and viviparous animals refer to the same group of creatures.

Question 4. A bird lives in a _________________.
Answer: nest
In simple words: Birds build nests to lay eggs and keep their young ones safe.

Exam Tip: Connect bird habitats directly with nests.

Question 5. Animals that lay eggs are called ____________.
Answer: oviparous animals
In simple words: Oviparous animals lay eggs from which babies hatch later.

Exam Tip: Birds, reptiles, and amphibians are examples of oviparous animals.

Question 6. _____________ a child means to become legal parents of that child
Answer: Adopting
In simple words: Adoption gives children who do not have parents a loving family.

Exam Tip: Note the spelling of adopting/adoption.

Question 7. Only birds and mammals display a great sense of ____________case.
Answer: parental
In simple words: Birds and mammals take good care of their young babies.

Exam Tip: 'Parental care' is a key scientific term here.

Question 8. All ______________ produce young ones of their own kind.
Answer: living beings
In simple words: Every living creature reproduces to maintain life on Earth.
Exam Tip: Universal characteristic of living things is reproduction.

Question 9. All ______________ lay eggs which have hard brittle shells.
Answer: birds
In simple words: Bird eggs possess hard, protective outer shells.

Exam Tip: Distinguish hard shells of birds from soft-shelled eggs of many reptiles.

Write true or false:

Question 1. The young ones of mammals develop inside the mother’s body( )
Answer: True
In simple words: Mammal babies grow inside the mother until birth.

Exam Tip: Core definition of viviparous development.

Question 2. The whale and the dolphins which live in water are mammals( )
Answer: True
In simple words: Whales and dolphins live in water, but they breathe air and give birth to live babies.

Exam Tip: Do not confuse aquatic habitat with fish classification for whales and dolphins.

Question 3. Fishes, frogs and reptiles care for their young ones.( )
Answer: False
In simple words: Most fishes, frogs, and reptiles do not look after their babies after laying eggs.

Exam Tip: Only birds and mammals show strong parental care.

Question 4. Pigeon is a viviparous animal.( )
Answer: False
In simple words: Pigeons are birds that lay eggs, making them oviparous.

Exam Tip: Birds are always oviparous, not viviparous.

Question 5. All birds lays eggs which have soft shells.( )
Answer: False
In simple words: Bird eggs have hard and brittle shells, not soft shells.

Exam Tip: Reptiles often lay soft-shelled eggs, unlike birds.

Question 6. Mayfly lives only for a few hours as an adult.( )
Answer: True
In simple words: Adult mayflies have very short lifespans lasting only hours or a day.

Question 7. The mammals and birds take much care of their young ones.( )
Answer: True
In simple words: Both birds and mammals feed, protect, and train their babies.

Exam Tip: High parental care is exclusive to birds and mammals.

Question 8. Bats that fly in the air are mammals.( )
Answer: True
In simple words: Even though bats fly like birds, they give birth to live babies and feed them milk.

Exam Tip: Bats are the only flying mammals.

Name the following:

Question 1. Examples of two mammals. a)________________ b)_________________
Answer: a) Cow, b) Human being (or Dog, Cat, Bat)
In simple words: Common animals that give birth to live young and feed milk.

Exam Tip: Give common, undeniable mammal examples.

Question 2. Two animals that do not care their young ones. a)_______________ b)___________________
Answer: a) Frog, b) Snake (or Fish, Turtle)
In simple words: Many egg-laying animals leave their eggs and babies to fend for themselves.

Exam Tip: Mention amphibians, reptiles, or fish.

Question 3. Examples of oviparous animals. a)_______________ b)______________
Answer: a) Hen, b) Frog (or Pigeon, Snake)
In simple words: Animals that lay eggs are oviparous.

Exam Tip: Any bird or reptile fits this category.

Match the following:

Question 1. Match the columns:
1. Human beings - c) viviparous animals
2. Cow - d) calf
3. Dog - a) puppy
4. Birds - b) oviparous animals
Answer: 1 - c, 2 - d, 3 - a, 4 - b
In simple words: Correctly pairing animals with their young ones or reproductive types.

Exam Tip: Learn baby animal names like calf and puppy thoroughly.

Ln6: Our sense organs

Fill in the blanks:

Question 1. Blind people can read with the help of the ___________script.
Answer: Braille
In simple words: Braille is a special reading system for visually impaired individuals.

Exam Tip: Louis Braille invented the Braille script.

Question 2. Blind people read by using their ______________over raised dots.
Answer: fingers
In simple words: Readers feel raised dot patterns with their fingertips.

Exam Tip: Sense of touch replaces sight in reading Braille.

Question 3. We should not touch or play with____________things.
Answer: sharp
In simple words: Sharp objects like knives and blades can cause injuries.

Exam Tip: Safety rule regarding sharp objects.

Question 4. Braille script is a system which use_______________
Answer: raised dots
In simple words: Characters in Braille consist of patterns of raised dots.

Exam Tip: Connect Braille directly with raised dots.

Question 5. We should not make fun of people who are______________
Answer: differently abled
In simple words: We must treat all people with respect and kindness.

Exam Tip: Use the term 'differently abled' respectfully.

Question 6. Children have about ____________taste buds.
Answer: 10,000
In simple words: Kids possess numerous taste buds on their tongues to sense flavors.

Exam Tip: Remember the specific number 10,000 for children's taste buds.

Write true or false:

Question 1. We have six sense organs.( )
Answer: False
In simple words: Humans have five main sense organs: eyes, ears, nose, tongue, and skin.

Question 2. We should make fun of people who are differently abled.( )
Answer: False
In simple words: Making fun of anyone is bad manners and hurtful.

Exam Tip: Always choose empathetic behavior in moral science and EVS questions.

Question 3. We should touch or play with sharp things.( )
Answer: False
In simple words: Playing with sharp items is dangerous.

Exam Tip: Safety first; never play with sharp tools.

Question 4. Children have about 10,000 taste buds( )
Answer: True
In simple words: Children have thousands of taste buds which decrease as they grow older.

Exam Tip: Match this fact with the fill-in-the-blank question.

Ln8: How we gets food

Fill in the blanks:

Question 1. _____________is known as the land of spices.
Answer: India
In simple words: India produces and exports a wide variety of aromatic spices.

Exam Tip: India is universally called the land of spices.

Question 2. ______________grow food.
Answer: Farmers
In simple words: Farmers cultivate crops in fields to feed the population.

Exam Tip: Respect farmers as the growers of our food.

Question 3. _______________catches fish.
Answer: Fisherman
In simple words: Fishermen catch fish from rivers, seas, and lakes.

Exam Tip: Link catching fish with fishermen.

Question 4. Daily workers gather_____________
Answer: tea leaves / honey / firewood (or food items)
In simple words: Daily wage gatherers collect forest produce or agricultural goods.

Exam Tip: Follow textbook context for gatherers.

Question 5. Spices add____________ to our food.
Answer: taste and flavour
In simple words: Spices make food delicious and aromatic.

Exam Tip: Purpose of spices is adding flavor and aroma.

Question 6. _______________are unwanted plants.
Answer: Weeds
In simple words: Weeds grow naturally where they are not wanted and harm main crops.

Exam Tip: Definition of weeds is unwanted plants.

Write true or false:

Question 1. Weeds are useful.( )
Answer: False
In simple words: Weeds compete with useful crops for nutrients and water, so they are harmful.

Exam Tip: Weeds are harmful and unwanted.

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

Exam Tip: Common misconception: salt is a mineral seasoning, not a botanical spice.

Ln10: Water sources

Fill in the blanks:

Question 1. _______________ is the ultimate source of water on earth.
Answer: Rain
In simple words: All water bodies on Earth get replenished by rainfall.

Exam Tip: Rain is the primary and ultimate source of water.

Question 2. Rain water that seeps into the earth is known as________water.
Answer: underground
In simple words: Water soaking into the soil collects underground as groundwater.

Exam Tip: Seeped rainwater creates underground water sources.

Question 3. ____________at the bottom of the well help to filter the water.
Answer: Gravel and sand
In simple words: Layers of sand and pebbles purify well water naturally.

Exam Tip: Sand and gravel act as natural filters in wells.

Question 4. ____________is the only kind of water which can be used for drinking.
Answer: Pure / Potable water (Fresh water)
In simple words: Clean, fresh water is safe for drinking.

Exam Tip: Sea water is salty, so only fresh water is potable.

Question 5. A small collection of water is called a___________.
Answer: pond
In simple words: Ponds are small, shallow bodies of standing water.

Question 6. ____________uses electricity to draw out underground water.
Answer: Tubewell (Electric pump)
In simple words: Motor-driven pumps extract groundwater quickly.

Exam Tip: Handpumps use manual force, tubewells use electricity.

Name the following:

Question 1. Large water bodies. a)______________ b) ______________
Answer: a) Sea, b) Ocean
In simple words: Oceans and seas hold massive amounts of saline water.

Exam Tip: Seas and oceans are the largest water repositories.

Question 2. Small bodies of water. a)_____________ b)_______________
Answer: a) Pond, b) Stream (or Well)
In simple words: Ponds and streams contain relatively small amounts of water.

Exam Tip: Contrast with oceans and seas.

Question 3. Three sources of water. a)_________________ b)_______________ c)_______________
Answer: a) Rain, b) River, c) Well (or Pond/Lake)
In simple words: Common natural and man-made places where we find water.

Exam Tip: List basic water sources like rain, rivers, and ponds.

Question 4. Chief source of water_____________
Answer: Rain
In simple words: Rainfall is the primary source supplying all water bodies.

Exam Tip: Chief source of water is always rain.

Question 5. Sources provide us with underground water. a)_________________ b)______________ c)________________
Answer: a) Well, b) Handpump, c) Tubewell
In simple words: Methods used to bring water up from beneath the ground.

Exam Tip: Wells, handpumps, and tubewells tap underground water.

Write true or false:

Question 1. Lakes are bigger collection of water than pond.( )
Answer: True
In simple words: Lakes cover larger areas and hold more water than ponds.

Exam Tip: Size order: Pond < Lake < Sea < Ocean.

Question 2. Sea water is safe for drinking.( )
Answer: False
In simple words: Sea water contains high amounts of salt and is unfit for drinking.

Question 3. A tubewell uses electricity to draw out underground water.( )
Answer: True
In simple words: Electric tubewells pump out deep groundwater efficiently.

Exam Tip: Match with previous fill-in-the-blank question.

Question 4. We get filtered water from a tubewell.( )
Answer: True (Water filtered naturally through sand layers)
In simple words: Underground water is naturally filtered through soil layers.

Exam Tip: Earth's soil acts as a natural filter for groundwater.

Question 5. Water from open well is safe for drinking.( )
Answer: False
In simple words: Open wells can easily get contaminated with dirt and germs.

Exam Tip: Open water sources require boiling or purification before drinking.

Question 6. Underground water is brought out for use by handpump, well and tubewells.( )
Answer: True
In simple words: These are standard devices used to access groundwater.

Exam Tip: Handpumps, wells, and tubewells are key groundwater extractors.

Ln11: How water gets dirty

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 lost body fluids.

Exam Tip: Memorize the full expansion: Oral Rehydration Solution.

Question 2. A large mass of water is called______________
Answer: Sea / Ocean
In simple words: Vast expanses of saline water make up seas and oceans.

Exam Tip: Large water masses refer to seas or oceans.

Question 3. When we suffer from_______________ we lose a lot of water from our body.
Answer: diarrhea / loose motions and vomiting
In simple words: Waterborne illnesses cause severe dehydration.

Exam Tip: Dehydration happens during severe vomiting and diarrhea.

Question 4. _____________is the holiest river of the Hindus.
Answer: Ganga (Ganges)
In simple words: The River Ganga holds immense religious significance in India.

Question 5. ____________ is the longest river in India.
Answer: Ganga
In simple words: The Ganga spans the greatest distance across India.

Exam Tip: Longest river in India is the Ganga.

Question 6. ______________ is called the Ganga of the South.
Answer: Kaveri / Godavari
In simple words: South Indian rivers like Godavari or Kaveri are revered like the Ganga.

Exam Tip: Godavari is often termed the Dakshina Ganga (Ganga of the South).

Question 7. Brahmaputra together with the_______________- it forms the world’s biggest delta in West Bengal.
Answer: Ganga
In simple words: The Ganga and Brahmaputra rivers create the massive Sundarbans delta.

Question 8. ____________ is saline.
Answer: Sea water (Ocean water)
In simple words: High salt content makes sea water salty or saline.

Exam Tip: Saline means salty.

Name the following:

Question 1. Name five famous rivers of India
a)____________ b)_____________ c)______________ d)______________ e)_____________
Answer: a) Ganga, b) Yamuna, c) Brahmaputra, d) Narmada, e) Kaveri
In simple words: Major rivers flowing across the Indian subcontinent.

Exam Tip: Learn at least five major Indian river names.

Question 2. Name three diseases which is caused by water pollution.
a)_______________ b)_________________ c)_________________
Answer: a) Cholera, b) Typhoid, c) Jaundice (or Diarrhea)
In simple words: Illnesses spread by drinking contaminated water.

Exam Tip: Waterborne diseases include cholera, typhoid, and jaundice.

Question 3. Name five animals that live in sea.
a)______________ b)_____________ c)___________ d)___________ e)_____________
Answer: a) Whale, b) Dolphin, c) Shark, d) Octopus, e) Starfish
In simple words: Creatures that inhabit marine environments.

Exam Tip: Memorize common marine animals.

Write true or false:

Question 1. Animals should be bathed in canals or rivers.( )
Answer: False
In simple words: Washing animals in rivers pollutes the drinking water sources.

Exam Tip: Bathing animals in natural water bodies causes water pollution.

Question 2. Water should not be boiled or filtered before drinking.( )
Answer: False
In simple words: Water must always be boiled or filtered to kill harmful germs.

Exam Tip: Always purify drinking water.

Question 3. An octopus lives in the pond.( )
Answer: False
In simple words: Octopuses are marine animals living in salt water seas and oceans, not freshwater ponds.

Exam Tip: Octopuses inhabit marine salt water habitats.

Question 4. Indus was known as sindhu in ancient times.( )
Answer: True
In simple words: The ancient Sanskrit name for the Indus River was Sindhu.

Exam Tip: Historical name of Indus is Sindhu.

Question 5. A person who is having loose motions and vomiting should drink ORS.( )
Answer: True
In simple words: ORS helps recover lost body salts and water during illness.

Exam Tip: ORS is the standard remedy for dehydration.

Question 6. Pipes should be checked at regular intervals.( )
Answer: True
In simple words: Regular pipe inspections prevent leakage and water contamination.

Exam Tip: Preventative maintenance keeps water supply clean.

Ln 12: Evaporation

Fill in the blanks:

Question 1. The heat of the ___________ dries up the puddles.
Answer: sun
In simple words: Solar heat evaporates water from puddles into the air.

Exam Tip: Sun's heat drives evaporation.

Question 2. _______________ is taking place in nature all the time.
Answer: Evaporation (Water cycle)
In simple words: Water constantly evaporates from water bodies into the atmosphere.

Exam Tip: Continuous natural process of water evaporation.

Question 3. ________________ is a process in which water changes into water vapour due to heat.
Answer: Evaporation
In simple words: Heating liquid water turns it into invisible gas called water vapor.

Exam Tip: Liquid to gas by heat is evaporation.

Question 4. ______________is a process in which water vapour changes to water due to cooling.
Answer: Condensation
In simple words: Cooling water vapor turns it back into liquid water droplets.

Exam Tip: Gas to liquid by cooling is condensation.

Question 5. ______________cools down to form tiny drops of water.
Answer: Water vapour
In simple words: As warm water vapor rises and cools, it forms clouds and droplets.

Exam Tip: Condensation creates water droplets.

Question 6. Colour and label the water cycle:
Answer: Draw and label evaporation, condensation, precipitation, and collection.
In simple words: The water cycle shows how water moves between earth and sky through evaporation and rain.

Exam Tip: Practice drawing arrows in a continuous circle for the water cycle diagram.

Ln 16: How they learnt their skills

Fill in the blanks:

Question 1. A______________ stitches clothes.
Answer: tailor
In simple words: Tailors use sewing machines and needles to stitch garments.
Exam Tip: Link stitching clothes with a tailor.

Question 2. A______________ makes pots.
Answer: potter
In simple words: Potters shape clay into pots using a potter's wheel.
Exam Tip: Potters make clay pots.

Question 3. A____________mends shoes.
Answer: cobbler
In simple words: Cobblers repair torn or damaged footwear.

Exam Tip: Cobblers mend shoes.

Question 4. A ____________ makes furniture.
Answer: carpenter
In simple words: Carpenters craft wooden items like tables, chairs, and beds.

Exam Tip: Carpenters work with wood to make furniture.

Question 5. An _____________ makes beautiful patterns on fabrics.
Answer: embroiderer
In simple words: Embroiderers decorate cloth using needles and colorful threads.

Exam Tip: Embroidery involves pattern-making on cloth.

Question 6. ITI stands for ______________
Answer: Industrial Training Institute
In simple words: ITI is a vocational school providing technical skill training.

Exam Tip: Learn the full form: Industrial Training Institute.

Question 7. A jack is used by ____________
Answer: mechanic (or car repairer)
In simple words: Mechanics use jacks to lift heavy vehicles for repairs.

Question 8. An awl is used by a ____________
Answer: cobbler
In simple words: Cobblers use an awl tool to poke holes in thick leather.
Exam Tip: Awl is a pointed leather-piercing tool for cobblers.

Question 9. The tools of a ____________ are sewing machines, scissors and needle.
Answer: tailor
In simple words: Tailors rely on sewing machines, scissors, and needles for stitching clothes.
Exam Tip: Match tailoring tools correctly.

Question 10. A potter makes pots with the help of _____________
Answer: potter's wheel (and clay)
In simple words: A rotating wheel helps shape wet clay evenly.
Exam Tip: Potter's wheel is essential for pottery.

Question 11. The tools of an ____________ are needle and a circular wooden frames.
Answer: embroiderer
In simple words: Circular frames hold cloth tight while embroidering patterns.
Exam Tip: Circular wooden frames are embroidery hoops.

Name the following:

Question 1. The tools used by the tailor.
a)______________ b)_____________ c)_____________
Answer: a) Sewing machine, b) Scissors, c) Needle (or Measuring tape)
In simple words: Essential equipment for stitching garments.
Exam Tip: List standard tailoring items.

Question 2. The tools used by an embroiderer.
a)_____________ b)______________
Answer: a) Needle, b) Circular wooden frame (Hoop)
In simple words: Tools required for decorative needlework.
Exam Tip: Remember needles and frames for embroidery.

Question 3. The tools used by the cobbler.
a)___________ b)____________
Answer: a) Awl, b) Cobbler's knife / Hammer (or Waxed thread)
In simple words: Equipment used for fixing shoes.
Exam Tip: List awl and hammer/knife for cobblers.

Question 4. The tools used by the carpenter.
a)_____________ b)_____________.
Answer: a) Saw, b) Hammer (or Chisel / Plane)
In simple words: Tools used for cutting and shaping wood.
Exam Tip: Saws and hammers are standard carpenter tools.

Ln 20: Parts of a plant

Fill in the blanks:

Question 1. If we cut the roots of a plant, it _________
Answer: dies (wethers / falls down)
In simple words: Roots absorb water and nutrients, so cutting them kills the plant.
Exam Tip: Roots are vital for plant survival.

Question 2. ___________ is a long and thick root.
Answer: Tap root
In simple words: A tap root grows straight down deep into the soil as a main thick root.
Exam Tip: Tap root is a single thick main root (e.g., carrot, radish).

Question 3. _____________ is a bunch of long and thin roots.
Answer: Fibrous root
In simple words: Fibrous roots consist of many small, thin, spreading roots.
Exam Tip: Grass and wheat have fibrous root systems.

Question 4. During the time of famine people eat a root called________
Answer: tapioca (or cassava / yam)
In simple words: Edible roots provide nourishment during food shortages.
Exam Tip: Tapioca is a common edible tuber/root.

Question 5. In banyan trees roots are above the ground. They are called___________ roots.
Answer: aerial
In simple words: Aerial roots grow downwards from branches to provide extra support.
Exam Tip: Banyan trees have characteristic aerial prop roots.

Name the following:

Question 1. Name any two trees which have aerial root.
a)_______________ b)______________
Answer: a) Banyan tree, b) Rubber tree (or Mangrove)
In simple words: Trees with roots growing above the soil surface.
Exam Tip: Banyan tree is the primary example of aerial roots.

Question 2. Name any two tap roots.
a)_______________ b)_______________
Answer: a) Carrot, b) Radish (or Beetroot / Turnip)
In simple words: Common taproots that store food.
Exam Tip: Carrots and radishes are edible tap roots.

Question 3. Name any two fibrous roots
a)________________ b)______________
Answer: a) Grass, b) Wheat (or Rice / Maize)
In simple words: Plants having bushy, thin root systems.
Exam Tip: Grass and wheat have fibrous root structures.

Write true or false:

Question 1. A carrot is a fibrous root.( )
Answer: False
In simple words: Carrots are thick tap roots, not fibrous roots.
Exam Tip: Carrot = Tap root.

Question 2. Stem of the plant is above the ground.( )
Answer: True
In simple words: The stem grows upwards above the soil supporting branches and leaves.
Exam Tip: Roots are below ground; stems are above ground.

Question 3. Roots binds the particles of soil.( )
Answer: True
In simple words: Roots hold soil tightly, preventing soil erosion.
Exam Tip: Soil binding is a major function of roots.

Question 4. Banyan trees has tap root.( )
Answer: False (It has aerial roots / modified roots)
In simple words: Banyan trees are famous for their hanging aerial roots.
Exam Tip: Banyan trees feature prominent aerial roots.