7th Standard CBSE Syllabus & Materials
7th Standard CBSE
CBSE 7th Social Science Theme E - Understanding Market - New Sample Question Papers Study Material - QB365 Set A
NEW7th Standard CBSE
CBSE 7th Social Science Theme E - From Barter to Money - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme D - The Constitution of India- An Introduction - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme D - From the Rulers to the Ruled : Types of Governments - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme B - The Age of Reorganisation - New Sample Question Papers Study Material - QB365 Set A
NEW7th Standard CBSE
CBSE 7th Social Science Theme B - The Rise of Empires - New Sample Question Papers Study Material - QB365 Set A
Published on: 31/10/2025
Download CBSE Class 7th Standard CBSE Science question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 7th Standard CBSE Science
Questions + Answers key
Take MCQ Science Test
1.
The function of kidney is to filter the _____________ to remove ________.
2.
The parts or organs involved in excretion to form the _________.
3.
The _________ is an organ which beats continuously to act as a __________.
4.
Blood consists of _______, _______, ________ and platelets.
5.
Haemoglobin is present in __________ cells.
6.
The lower chambers of heart is called
atria
ventricles
aorta
vena cava
7.
A certain type of cells helps in destruction of disease-causing microorganisms are known as
thrombocytes
white blood cells
osteocytes
red blood cells
8.
The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in
veins
arteries
heart
capillaries
9.
Water absorption through roots can be increased by keeping the plants
in the shade
in dim light
under the fan
covered with a polythene bag
10.
In plants, water is transported through
xylem
phloem
stomata
root hair
11.
Name the tissues of a plant which carries
(a) water and minerals from roots to the leaves.
(b) food from the leaves to the other parts of the plant.
12.
Why is it necessary to excrete waste products?
13.
Why is transport of materials necessary in a plant or in an animal? Explain.
14.
Urine is called an excretory product. Why?
15.
Blood is a fluid connective tissue. Justify.
16.
Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?
17.
Record your own pulse rate and heartbeat and that of your friends while resting and after running and record in Table.
18.
While learning to ride a bicycle, Boojho lost his balance and fell. He got bruises on his knees and it started bleeding. However, the bleeding stopped after sometime.
(a) Why did the bleeding stop?
(b) What would be the colour of the wounded area and why?
(c) Which type of blood cells are responsible for clotting of blood?
19.
Sweat is secreted by sweat glands, present in our skin.
20.
The process of cleaning the blood of human by using a kidney machine is called dialysis.
21.
WBC protects the body from diseases.
22.
Haemoglobin is the red colour pigment present in blood.
23.
The vascular tissue for the transport of food in plants is called xylem.
24.
Ureters
25.
William Harvey
26.
Veins
27.
Circulatory system
28.
Left atrium
29.
What are the components of blood?
30.
Boojho wants to know why plants absorb a large quantity of water from the soil, then give it off by transpiration?
31.
Paheli wants to know whether other animals also urinate?
32.
Boojho wonders if sponges and hydra also have blood?
33.
What will happen if the blood rich in oxygen and the blood rich in carbon dioxide mix with each other?
1.
( )
blood, urea
2.
( )
excretory system
3.
( )
heart, pump
4.
( )
plasma, RBCs, WBCs
5.
( )
Red Blood Cells (RBCs)
6.
(b)
ventricles
7.
(b)
white blood cells
8.
(d)
capillaries
9.
Water absorption through roots can be increased by keeping the plants under the fan.
10.
In plants, water is transported through xylem.
11.
The tissue which carries
(a) water and minerals from roots to leaves is xylem.
(b) food from the leaves to the other parts of the plant is phloem.
12.
When our cells perform their functions, certain waste products are produced. These waste products are toxic and hence need to be removed from the body. The process of removing waste products produced in the cells of the living organisms is called excretion.
13.
All organisms (plants and animals) need food, water and oxygen for survival. They need to transport all these to various parts of their body. Further, animals need to transport wastes to the parts from where they can be removed or excreted.
That's why transportation is necessary in both plants and animals.
14.
Urine is the mixture of urea and other unwanted salts with water which is needed to be excreted out as its presence in blood can make a person ill.
15.
Blood is a fluid tissue which connects all the parts of body with each other.
16.
Veins have valves to prevent blood from flowing backwards and pooling, whereas arteries pump blood at very high pressures, which naturally prevents backflow.
17.
| Name of the student | While resting | After running | ||
| Heart beat | Pulse rate | Heart beat | Pulse rate | |
| Rekha | 70 | 70 | 90 | 90 |
| Raman | 71 | 71 | 95 | 95 |
| Priya | 70 | 70 | 89 | 89 |
| Madhu | 70 | 70 | 100 | 100 |
| Kusum | 72 | 72 | 110 | 110 |
| Alka | 70 | 70 | 96 | 96 |
18.
(a) When a cut or wound starts bleeding after some time, a clot is formed which plugs the cut and bleeding stops.
(b) Wounded area becomes dark red in colour due to clotting of blood.
(c) The blood clot is formed due to the presence of the cells called platelets in the blood.
19.
(a)
20.
(a)
21.
(a)
22.
(a)
23.
(b)
24.
( )
Tube-like structure
25.
( )
Circulation of blood
26.
( )
Deoxygenated blood
27.
( )
Heart and blood vessels
28.
( )
Receives oxygenated blood from the pulmonary veins.
29.
( )
Red blood cells, white blood cells, platelets and plasma.
30.
( )
Because transpiration helps in suction of water.
31.
( )
Yes.
32.
( )
No
33.
( )
The net oxygen content of blood will fall and hence body will suffer from oxygen deficiency.
7th Standard CBSE Syllabus & Materials
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