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Human Body: Organ Systems- 2


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10 Questions MCQ Test Science for Class 3 | Human Body: Organ Systems- 2

Human Body: Organ Systems- 2 for Class 3 2022 is part of Science for Class 3 preparation. The Human Body: Organ Systems- 2 questions and answers have been prepared according to the Class 3 exam syllabus.The Human Body: Organ Systems- 2 MCQs are made for Class 3 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Human Body: Organ Systems- 2 below.
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Human Body: Organ Systems- 2 - Question 1

Abhishek blew hard on a mirror surface. He observed that the mirror became misty because of tiny water droplets that formed on the mirror. What can he conclude from this activity?

Detailed Solution for Human Body: Organ Systems- 2 - Question 1
  • Water vapours are given off when we exhale.
  • Water vapour, water vapour or aqueous vapour is the gaseous phase of water.
Human Body: Organ Systems- 2 - Question 2

Substances abundant in the dull, purplish-red blood in the veins are _____.
(a) Nutrients
(b) Oxygen
(c) Carbon dioxide
(d) Waste materials

Detailed Solution for Human Body: Organ Systems- 2 - Question 2
  • Circulatory system consists of blood vessels and heart.
  • Blood vessels are of two types - arteries and veins.
  • Arteries carry blood rich in nutrients and oxygen to all body parts while veins collect blood rich in carbon dioxide and waste materials from the body parts and carry it back to the heart.
Human Body: Organ Systems- 2 - Question 3

The given figure shows the human digestive system. In which labelled part food is both masticated and partially digested?

Detailed Solution for Human Body: Organ Systems- 2 - Question 3

Food is masticated with teeth and partially digested by the action of salivary juices in the mouth (P).

Human Body: Organ Systems- 2 - Question 4

Sameer uses dumbbell to exercise. Which body systems are involved in bending and straightening of the arm?

Detailed Solution for Human Body: Organ Systems- 2 - Question 4
  • In bending and straightening of the   arms, both muscles (muscular system) and bones (skeletal system) are involved.
  • These two systems work in close co-ordination and cause all the body movements.
Human Body: Organ Systems- 2 - Question 5

What happens when we touch a hot kettle?

Detailed Solution for Human Body: Organ Systems- 2 - Question 5

When we touch a hot kettle with our hand, our skin sends message to the spinal cord through nerves, and here the message is processed is sent again to the hand (skin)  through nerves to pull back.

Human Body: Organ Systems- 2 - Question 6

Study the given diagram,

Q. Which of the following represents the small intestine?

Detailed Solution for Human Body: Organ Systems- 2 - Question 6

Small intestine is an organ of digestive system where complete digestion of food occurs and the digested food nutrients are absorbed into blood and sent to all body parts.

Human Body: Organ Systems- 2 - Question 7

Beena, Shalu and Navpreet wanted to find out who among them had the biggest lung capacity. They decided to blow into a balloon with one breath and see how big it will become. Which of the following factors they must keep the same to make the test a fair one?
1. Colour and design pattern of the balloon
2. Size and shape of the balloon
3. When to breathe in forcibly before blowing
4. Material, balloon is made of

Detailed Solution for Human Body: Organ Systems- 2 - Question 7
  • Final size of the balloon after blowing air will depend on initial size, shape and material of the balloon, thus these should be kept same.
  • Colour and design pattern have no effect on it.
  • Breathing in forcibly before blowing will increase the amount of air blowed out hence all of them should breathe in before blowing.
Human Body: Organ Systems- 2 - Question 8

Read the given statements made by four students.
Priya: I love the smell of wet soil after rains.
Shruti: My hair feel so rough after using this new shampoo.
Om: Watch out! You can slip on this banana peel.
Sam: I just love the musical sound made by wind chymes hanging at the door of my living room.
Now, select the correct option regarding this.

Detailed Solution for Human Body: Organ Systems- 2 - Question 8
  • Priya, Shruti, Om and Sam used the senses of smell, touch, sight and hearing, respectively.
  • Sense of smell helps us to choose a good perfume.
Human Body: Organ Systems- 2 - Question 9

The given picture shows two organ systems of our body, X and Y. Select the correct statement about these systems.

Detailed Solution for Human Body: Organ Systems- 2 - Question 9
  • The system X is skeletal system while the system Y is muscular system.
  • These two systems work together to help body to perform movements.
Human Body: Organ Systems- 2 - Question 10

Select the correct option regarding the organ system shown here.

Detailed Solution for Human Body: Organ Systems- 2 - Question 10
  • In the given figure, P is stomach, Q is small intestine and R is large intestine.
  • Churning and partial digestion of food takes place in stomach.
  • Complete digestion of all food components and their absorption into blood takes place in small intestine.
  • Major absorption of water takes place in large intestine.
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