CBSE Class 5 Science General Science Revision Test Worksheet

Lesson 1, 2, 3

Q.1 Fill in the blanks

Question 1. Always walk on the __________.
Answer: footpath
In simple words: Always walk on the footpath to stay safe from moving vehicles on the road.

Exam Tip: Remember basic road safety rules to prevent accidents.

Question 2. __________ is a crack or break in a bone.
Answer: Fracture
In simple words: A fracture means a bone is cracked or broken due to injury.

Exam Tip: Learn key medical terms like fracture for injuries related to bones.

Question 3. __________ mosquitoes spread dengue.
Answer: Aedes
In simple words: The Aedes mosquito spreads the dengue virus by biting humans.

Exam Tip: Associate vector-borne diseases with their specific carrier mosquitoes (e.g., Aedes for dengue).

Question 4. __________ is caused due to deficiency of proteins.
Answer: Kwashiorkor
In simple words: Lack of proteins in the diet causes a deficiency disease called kwashiorkor.

Exam Tip: Memorize major deficiency diseases: Marasmus and Kwashiorkor for protein deficiency.

Question 5. __________ helps us to get rid of undigested food.
Answer: Roughage (Dietary fiber)
In simple words: Roughage adds bulk to food and helps our body remove waste smoothly.

Exam Tip: Roughage does not provide energy or nutrients, but it is essential for digestion.

Question 6. Mosquitoes breed in __________ water.
Answer: stagnant
In simple words: Mosquitoes lay eggs in still or stagnant water found in coolers, puddles, and pots.

Exam Tip: Prevent mosquito breeding by ensuring water does not collect around your surroundings.

Q.2 Gives one word:-

Question 1. This number is dialed on our telephone to call the fire brigade.
Answer: 101
In simple words: Dial 101 in case of a fire emergency.

Exam Tip: Learn emergency helpline numbers like 101 (fire) and 102 (ambulance).

Question 2. We should use this to cross the road-
Answer: Zebra crossing
In simple words: Pedestrians should always use the zebra crossing to cross safely.

Exam Tip: Zebra crossings have black and white stripes painted on the road.

Question 3. Lack of iron in our body causes this disease
Answer: Anemia
In simple words: Anemia happens when the body lacks enough iron, causing weakness and fatigue.

Question 4. It helps to loosen soil---
Answer: Earthworm
In simple words: Earthworms burrow through soil, loosening it and making it fertile for plants.

Exam Tip: Earthworms are famously known as the farmer's friends.

Question 5. They are our green friends---
Answer: Plants (or Trees)
In simple words: Plants give us oxygen, food, and shelter, earning them the name of green friends.

Exam Tip: Plants maintain the balance of nature and life on Earth.

Question 6. It improves our blood circulation and tone up our muscles-
Answer: Exercise
In simple words: Regular physical exercise keeps our muscles strong and heart healthy.

Exam Tip: Exercise combined with rest and a balanced diet ensures good health.

Q.3. Name the following-

Question 1. Two non communicable diseases
Answer: Diabetes and Scurvy (or Beriberi, Rickets)
In simple words: Non-communicable diseases do not spread from one person to another.

Exam Tip: Distinguish clearly between communicable (spreads) and non-communicable (does not spread) diseases.

Question 2. Two diseases caused by protozoa
Answer: Malaria and Dysentery (or Amoebiasis)
In simple words: Malaria and dysentery are infections caused by microscopic organisms called protozoa.

Exam Tip: Learn pathogen types: bacteria, viruses, fungi, and protozoa.

Question 3. Two plants that reproduces by spores
Answer: Ferns and Fungi (or Mosses)
In simple words: Non-flowering plants like ferns do not have seeds; they reproduce through tiny structures called spores.

Exam Tip: Spores are lightweight reproductive bodies produced by ferns and mushrooms.

Question 4. Two rabi crops
Answer: Wheat and Barley (or Mustard, Gram)
In simple words: Rabi crops are winter-season crops sown in November and harvested in spring.

Exam Tip: Contrast Rabi crops (winter crops like wheat) with Kharif crops (monsoon crops like rice).

Question 5. Two underground stems
Answer: Potato and Ginger (or Onion)
In simple words: Potato and ginger are modified stems that grow underground to store food.

Exam Tip: Do not confuse underground stems (potato) with true roots (carrot, radish).

Q.4. Answer the following.

Question 1. How does water disperse the seeds?
Answer: Plants that grow in or near water produce seeds or fruits that are light and buoyant, often covered with fibrous coats or trapped air pockets. These seeds float on water currents and are carried away to distant places where they germinate when they reach the shore.
In simple words: Water carries light seeds of aquatic or riverside plants, such as lotus and coconut, to new locations.

Exam Tip: Give examples like coconut (which has a fibrous outer coat for floating) when explaining water dispersal.

Question 2. What is meant by dispersal of seeds?
Answer: The scattering or transport of seeds away from the parent plant to different places is called seed dispersal. This process helps prevent overcrowding and reduces competition among seedlings for sunlight, water, and nutrients.
In simple words: Dispersal means spreading seeds away from the mother plant so they can grow properly.

Exam Tip: Mention the agents of dispersal: wind, water, animals, and explosion.

Question 3. What is a balanced diet?
Answer: A diet that contains the right amount of all essential nutrients (carbohydrates, proteins, fats, vitamins, and minerals), along with adequate roughage and water required for the proper functioning and growth of the body, is called a balanced diet.
In simple words: A balanced diet provides all necessary food nutrients in the correct proportions.

Exam Tip: A balanced diet varies depending on a person's age, gender, and physical activity level.

Question 4. How is malaria spread?
Answer: Malaria is spread by the bite of an infected female Anopheles mosquito. When the mosquito bites a person, it transmits malaria-causing parasites into their bloodstream.
In simple words: Infected female Anopheles mosquitoes spread malaria through their bites.

Question 5. What are communicable diseased?
Answer: Diseases that can spread from an infected person to a healthy person through air, water, food, insect bites, or direct contact are called communicable diseases (or infectious diseases). Examples include common cold, cholera, and malaria.
In simple words: Communicable diseases are infectious illnesses that spread from one person to another.

Exam Tip: Mention that these diseases are caused by germs like bacteria and viruses.

Question 6. What are the causes of fire accidents?
Answer: Fire accidents are generally caused by carelessness or negligence, such as:
1. Faulty electrical wiring or overloaded sockets.
2. Leaking gas cylinders or mishandling stoves.
3. Playing with matches, firecrackers, or candles carelessly.
4. Leaving inflammable materials near heat sources.
In simple words: Carelessness with electricity, gas stoves, matches, and chemicals causes fire accidents.

Exam Tip: List at least three clear safety hazards to score full marks.

Question 7. How does rabies spread?
Answer: Rabies spreads through the bite or scratch of an infected animal, most commonly dogs, monkeys, or cats, carrying the rabies virus in their saliva.
In simple words: Rabies is transmitted when an infected animal bites or scratches a human.

Exam Tip: Immediate washing of the wound with soap and water followed by anti-rabies vaccination is vital.

Q.5. Long answers.

Question 1. Write first aid tips for snake bite?
Answer: First aid tips for a snake bite include:
1. Keep the victim calm and still to slow down the spread of venom through the bloodstream.
2. Wash the bite area gently with soap and water.
3. Tie a bandage firmly (not too tightly) just above the bite wound to slow venom movement, but ensure blood circulation is not completely cut off.
4. Do not cut the wound or try to suck out the venom.
5. Rush the victim to the hospital or nearest doctor immediately for anti-venom treatment.
In simple words: Keep the person calm, wash the wound, bandage loosely above the bite, and take them to a doctor immediately.

Exam Tip: Emphasize that quick medical help and anti-venom are lifesaving in snake bite cases.

Question 2. How do animals and human beings help in the dispersal of seeds?
Answer: Animals and humans help in seed dispersal in the following ways:
1. Eating juicy fruits: Animals and humans eat fruits like mangoes, cherries, and berries and throw away the seeds in different places.
2. Sticky and spiny seeds: Some seeds have hooks, spines, or sticky outer coats that cling to the fur of animals or clothing of humans and are carried far away before falling off.
3. Undigested seeds: Birds and animals eat small seeds along with fruits. These seeds pass through their digestive tracts unharmed and are dropped out through waste droppings at distant locations.
In simple words: Animals and humans scatter seeds by eating fruits, dropping seeds, or carrying sticky seeds on fur and clothes.

Question 1. Two seeds that are dispersed by air.
Answer: Dandelion (Gulans) and Cotton seeds (or Madar/Aak seeds).
In simple words: Seeds like dandelion and cotton have hair-like structures or wings that let them float easily in the wind.

Exam Tip: Mention that wind-dispersed seeds are very light and possess hair or wings.

Question 2. Two food that is rich in protein.
Answer: Pulses (Dal) and Milk (or Eggs, Paneer, Fish, Soyabean).
In simple words: Protein-rich foods help in body building, growth, and repair of damaged cells.

Exam Tip: Proteins are often called body-building foods.