CBSE Class 5 Science Practice Worksheet Set 03

Q.1 Fill in the blanks. (7)

Question (1). Protozoa are ______________ celled animals.
Answer: single
In simple words: Protozoa are microscopic animals made up of only one cell.

Exam Tip: Remember that protozoa are single-celled organisms belonging to the kingdom Protista.

Question (2). ____________ are moulds and belong to plant kingodm.
Answer: Fungi
In simple words: Moulds are a type of fungi, which are non-green plants.

Exam Tip: Fungi include moulds, mushrooms, and yeasts.

Question (3). _____________ multiply quicker and are smaller than bacteria.
Answer: Viruses
In simple words: Viruses are much smaller than bacteria and reproduce very quickly inside host cells.

Exam Tip: Viruses are considered at the edge of living and non-living things because they need a host body to multiply.

Question (4). Malaria is caused by the female ___________Mosquito.
Answer: Anopheles
In simple words: The female Anopheles mosquito transmits the malaria parasite when it bites a human.

Exam Tip: Always note that it is specifically the female Anopheles mosquito that spreads malaria.

Question (5). The ___________programme of our government aims at educating polio.
Answer: Pulse Polio
In simple words: The Pulse Polio campaign helps eradicate polio through widespread vaccination and awareness.

Exam Tip: Pulse Polio is a nationwide immunization program in India.

Question (6). Diseases which are caused by reasons other than germs are called ____________
Answer: non-communicable diseases (or deficiency / lifestyle diseases)
In simple words: Diseases that do not spread from one person to another and are not caused by germs are non-communicable.

Exam Tip: Examples include scurvy, rickets, and diabetes.

Question (7). ____________ are non green plant which do not make their own food.
Answer: Fungi

In simple words: Fungi lack chlorophyll, so they cannot perform photosynthesis and must absorb nutrients from dead or decaying matter.

Exam Tip: Highlight that absence of chlorophyll distinguishes fungi from green plants.

Q-2 Complete the following sentences. (4)

Question (1). When we cough ____________________________________________________________________.
Answer: we should cover our mouth with a handkerchief or hand to prevent germs from spreading into the air.
In simple words: Covering your mouth while coughing stops airborne germs from infecting others.

Exam Tip: Good hygiene habits prevent the transmission of respiratory infections like colds and flu.

Question (2). We should drink water which is boiled ________________________________________ .
Answer: to kill harmful germs and bacteria present in it, making it safe for drinking.
In simple words: Boiling water destroys disease-causing microorganisms.

Exam Tip: Waterborne diseases like typhoid and cholera are prevented by drinking boiled or purified water.

Question (3). Local health officer should be informed _________________________________________ .
Answer: if there is an outbreak of a contagious disease or unclean stagnant water in the neighborhood.
In simple words: Reporting health hazards early helps authorities take preventive measures.

Exam Tip: Prompt reporting controls epidemics and vector breeding in local areas.

Question (4). A carrier is a person _______________________________________________________ .
Answer: who does not show symptoms of a disease themselves but carries and transmits disease-causing germs to others.
In simple words: A carrier spreads infection without appearing sick.

In simple words: A carrier passes germs to healthy individuals.

Exam Tip: Houseflies and certain humans can act as carriers of dangerous diseases.

Q.3 Draw the diagram of the following. (4)

Question (1). Bacteria
Answer:
1. Draw an elongated rod-like shape (Bacillus) or a spherical shape (Coccus).
2. Add a whip-like tail called a flagellum for movement.
3. Label the cell wall, cytoplasm, and flagellum clearly.
In simple words: Bacteria are tiny single-celled microorganisms with simple cell structures.

Exam Tip: Keep diagrams neat, labeled, and outlined with a sharp pencil or clear lines.

Question (2). Protozoa
Answer:
1. Draw an irregular blob-like shape (such as an Amoeba).
2. Draw finger-like projections called pseudopodia (false feet).
3. Label the nucleus, cell membrane, cytoplasm, and pseudopodia.
In simple words: Protozoa are single-celled microscopic animals like Amoeba and Paramecium.

Exam Tip: Clearly show the irregular shape of Amoeba using pseudopodia.

Q.4 Answer the following. (5)

Question (1). Which diseases are spread through contact ?
Answer: Diseases such as chickenpox, measles, ringworm, and conjunctivitis are spread through direct contact with an infected person or their belongings.
In simple words: Contact diseases pass from one person to another by touching or sharing personal items.

Exam Tip: Mention at least two common examples like chickenpox and measles to score full marks.

Question (2). What are germs ?
Answer: Germs are microscopic living organisms, such as bacteria, viruses, fungi, and protozoa, that can cause diseases and infections in humans, animals, and plants.
In simple words: Germs are tiny disease-causing microbes invisible to the naked eye.

Exam Tip: Classify germs into bacteria, viruses, fungi, and protozoa for a complete definition.

Question (3). What are antibodies ?
Answer: Antibodies are specialized proteins produced by the body's immune system to identify and neutralize harmful foreign substances like bacteria and viruses.
In simple words: Antibodies act as defense soldiers in our body to fight off infections.

Exam Tip: Emphasize that antibodies are part of our immune defense mechanism.

Question (4). What is the aim of Pulse polio programme ?
Answer: The primary aim of the Pulse Polio programme is to eradicate poliomyelitis (polio) completely from the country by immunizing all children under the age of five years with the polio vaccine.
In simple words: The goal is to protect all young children from polio through timely drops of vaccine.

Exam Tip: Mention the target age group (children under 5 years) for high accuracy.

Question (5). What is allergy ?
Answer: An allergy is an abnormal and sensitive reaction of the body's immune system to substances (such as pollen, dust, certain foods, or medicine) that are normally harmless to most people.
In simple words: An allergy happens when the body reacts strongly to harmless substances like dust or pollen.

Exam Tip: Highlight that allergies are triggered by harmless environmental substances called allergens.

A. Hard words to learn:-
1. Reproduction
2. Vegetative
3. Grafting
4. Pollination
5. Structure
6. Germination
7. Spores
8. Transplantation
9. Dispersion
10. Explosion

B. Define:-
1. Agriculture: A branch of science that deals with the study of growing similar types of plants in large number.
2. Germination: A very small baby plant coming out of the seed.
3. Reproduction: Production of young ones of its own kind.
4. Embryo: Baby plant growing in the seed.
5. Pest: An organism that attacks the crop or stored grains.
6. Transplantation: A process of transferring seedlings or baby plants from nursery to main field.

C. Name the Following:-
1. An artificial method of developing plant- Layering/Grafting
2. In Grafting, the lower part is known as- Stock
3. An example of layering- Jasmine
4. Seedling is also known as- Baby Plant
5. Seed Cover which is not edible- Husk
6. In Grafting, the upper part is known as- Scion

D. Answer the Following Questions:-

Question. What do you mean by Vegetative Propagation?
Answer : Vegetative propagation is a form of reproduction in plants, where root stems or leaf can give rise to a new plant. Natural Vegetative Propagation and Artificial Vegetative Propagation are the two types or methods of propagation in plants.
a) Natural Vegetative Propagation- It includes propagation by:-
i.Roots
ii.Stems
iii.Leaves

b) Artificial Vegetative Propagation- It includes propagation throughi.
i. Stem Cutting
ii. Layering
iii. Grafting

Question. What is Seed Dispersal? Why is it important?
Answer : The process of spreading seeds to different places away from the parent plant s knows as dispersal of Seeds.
It is important to spread the seeds so that they can get enough sunlight, air, water and space to grow. Dispersal can be done by wind, water, animals or even by selfexplosion.

Question. Define Agriculture and list out the steps involved in agricultural process.
Answer : Agriculture is a branch of science that deals with the study of growing similar types of plants in a large number.
The main steps in Agriculture are:-
i. Preparation of soil by tilling and leveling.
ii. Sowing of seeds
iii. Manuring
iv. Irrigation
v. Inspection of Mature Crops(Weeding)
vi. Harvesting
vii. Threshing
viii. Winnowing
ix. Storing and Marketing the seeds

Question. Explain “Pollination”
Answer : The transfer of pollen grains from male part(Stamen) to the female part (Carpel) is known as pollination. There are 2 types of pollination which are as follows:-
a. Self Pollination: When the pollination is held winthin the same flower.
b. Cross-Pollination: When the pollination is held between two different flowers. 

Q.1 Fill in the blanks.

(a) ________, _________, ________and ________ are the agents of dispersal.

(b) A germinating seed needs _________, ________ and _________.

(c) New plants can grow from the leaves of the _________.

(d) A seed with two seed leaves is called a_________.

(e) Plants help to reduce soil _________.

(f) The outer covering of a seed is called ___________.

(g) Crops grown from June to October are called __________.

(h) _________ and _________ grow in clayey soil.

(i) The practice of growing plants on a large scale is called ___________.

(j) The development of a seed into a seedling is called __________.

Q.2 Put (✔ or (X) against each statement.

(a) Seeds having one seed leaf are called dicot seeds. ( )

(b) Plants provide us with wood, fibre, rubber, gum, tea and coffee. ( )

(c) Insecticides and pesticides are used to protect the crops from being destroyed by pests. ( )

(d) Crops grown in winters are called Rabi crops. ( )

(e) Seeds having two seed leaves are called monocot seeds. ( )

(f) Brinjal, pumpkin and gourd grow in summer. ( )

Q.1. Tick (√ ) the correct answer :-

1. This joint allows movement at the wrist and ankle.
a. ball and socket joint
b. gliding joint
c. pivot joint
d. hinge joint

2. Strong tissues that bind the bones at a joint are called.
a. tendons
b. bone marrow
c. ligaments
d) ribs

3. These muscles are not under our control
a. eye muscles
b. muscles attached to skeleton
c. cardiac muscles
d. a and c.

4. The vertebral column is made up of
a. 22
b. 33
c. 12
d. 2 bones

Q.2. Fill in the blanks

a. The rib cage protects the __________ and __________.

b. The soft spongy material found inside the cavities of long bones is called __________.

c. The vertebral column is made up of __________ bones and it protects the __________.

d. The __________joint allows movement only in one direction and is present in __________ and __________.

e. The joint which allows maximummovement is called __________. 

f. Among the __________ bones in the facial region only the __________ is movable.

g. The __________ is the longest bone in our body.

h. White blood cells are produced by the __________and fight __________.

i. The __________ joint helps in movement of head in different directions.

j. The joint which is present between any 2 vertebrae of the spine is __________.

k. Muscles are attached to bones by strong fibres called __________.

l. The muscles found in the heart are called __________.

Fill in the blanks.

  1. ________ is the uppermost layer of the earth.

  2. River Kosi caused havoc in ___________

  3. The protection of soil against erosion is called _________

  4. Felling trees in large numbers is called ___________

  5. Carrying away of soil by the action of water or wind is called ___________

  6. ___________ may lead to soil erosion.

  7. Plants and trees hold the soil together by their __________

  8. Earth Day is celebrated every year on __________

  9. The Hwang Ho river which changes its course every year is in _____________

  10. _____________ is the foundation of all life on earth.

Q.1 FILL IN THE BLANKS

1. We apply muscular force when __________________.

2. A rolling ball stops after sometime because of the ____________.

3. Simple machine either changes the __________ or __________ the force applied.

4. Two types of pulley are _________ and ______.

5. _________ pulleys along with _____________ are used to lift loads.

6. The purpose of pulley is to _____________.

7. A wheel with a rod attached to it is known as _______________.

8. ____________ is a simple machine used to hold things tightly together.

9. Bigger screws called __________ are used to lift cars and other heavy objects.

10.____________ is the ability to do work.

11._____________ is the energy which is possessed by an object due to its motion or due to its position.

12.A drawn bow possesses mechanical energy due to its _____________.

13.___________ absorbs the energy of the sun to provide heat for cooking.

14.___________ is the conversion of wind energy into a useful form such as electricity, using wind turbines.

15.Sound is _____________ transmitted through solid liquid or gas.

16.___________ force arises when a body deforms

17.Levers can be classified according to the position of the _________ , ________, and ___________.

Q.2 Give e.g. of:-

a) Frictional force.

b) Elastic force

c) Mechanical force

d) Buoyant force.

e) First class Lever

f) Second class Lever

g) Third class lever

Q 1 Give one word for the following:

  1) An object which revolves around a planet. ________

  2) Pieces of rocks which create craters by falling on the moon. __________

  3) Man – made objects which revolve around the earth just as the moon does. ____________

  4) Earth`s closest neighbor in space. ___________

  5) Only natural satellite of the earth. _______________

  6) These are caused in the seas and oceans by the gravitational pull of the moon. ____________

  7) First artificial satellite launched by India. ____________

  8) A person who goes into space. __________

  9) An astronaut who stepped on the moon with Neil Armstrong. _____________

  10) The eclipse caused when the moon is completely in the dark shadow of the Earth. ________________

Q2 define

a) Satellite

b) Opaque object

c) Communication satellites

Q1) Define

Space, Satellite, Eclipse, Tides, Artificial Satellite

Q2) Name

  1) Earth’s closest neighbour’s and the only natural Satellite

  2) India’s first unmanned spacecraft to moon

  3) The surface of the moon is covered with _______ , __________ and huge ______

  4) The first astronaut who stepped on moon

  5) A person who goes to space

  6) First man to go to space

  7) Four artificial satellites launched by India

  8) Name Indian’s who have travelled to space

  9) Satellites which take picture of the movement of clouds and help us forecast the weather

Q3) Fill ups

  a) The object through which light does not pass is called ________

  b) _________ was the first satellite launched by India in 1975

  c) Satellites which send messages from one country to another are called _________ satellites

  d) High tides are caused by attraction between _____ and _________

  e) Zhai Zhigang of china remained suspended in space for about _____ minutes

  f) The craters on the surface of the moon are formed by pieces of rocks _____

  g) The moon is about _______ km away from the earth

  h) Different shapes of the moon are called its _________