Class 6 Science Chapter 8 MCQ Online Test for 2020-2021
| Class: 6 | Science |
| Chapter: 8 | Body Movements |
| Contents: | MCQ Online Tests with Answers |
Class 6 Science Chapter 8 MCQ Free OnlineTest
Class 6 Science Chapter 8 MCQ Online Test with answers and Explanation. Once read NCERT Book for the preparation of chapter 8 of 6th Science and then use these MCQs to revise the whole chapter. These MCQ tests covers all important questions in the form of objective questions quiz.
Q1
Which of the following is not an arm bone in the human skeleton?
[A]. Humerus
[B]. Ulna
[C]. Femur
[D]. Radius
Answer: Option C
Explanation:Generally, in human body radius, ulna, humerus are found in arm but femur is found in thigh or upper leg.
Q2
One of the following does not have a hinge joint. This one is:
[A]. Jaw
[B]. Elbow
[C]. Knee
[D]. Shoulder
Answer: Option D
Explanation:Hinge Joint allows the movement of bones in only one direction forward and backwards. In a hinge joint, the movement of bones is restricted to one direction by the shape of the ends of the bones which form the joint. Elbow, knee, knuckles (finger joints) and jaw are examples of hinge joints. And knee joint is also a hinge joint. But shoulder joint is an example of ball and socket joint.
Q3
Consider the following statements and choose the incorrect one:
[A]. The ball of thigh bone can rotate freely in the socket of hip bone so that the ball and socket joint at the hip allows the leg to be moved in all directions.
[B]. A pivot joint exists between our skull and the top vertebra of backbone.
[C]. In the forearm, the pivot joint makes the radius and ulna bones to twist around each other.
[D]. The plate type bones of our skull are held together by socket joints and cannot move at all.
Answer: Option D
Explanation:The plate type bones of our skull are held together by fixed joints and cannot move at all.
Q4
Read the following sentences carefully, and choose the incorrect one:
[A]. Cartilage is soft bone and it is found in our ear and nose only.
[B]. If cartilage found between bones, it reduces friction and allows the ends of bones to move easily over each other without damaging them.
[C]. The cartilage disc also absorbs the shocks, when we run, jump or do other such activities.
[D]. None of the above.
Answer: Option A
Explanation:Cartilage is also found on the ends of bones where they meet one another at a joint. Cartilage is also present between the vertebrae of backbone as cartilage disc.
Q5
Priya is writing some statements, choose the incorrect statement and help him:
[A]. The hip bone is also known as pelvic bone.
[B]. The hip bone encloses the portion of our body below the stomach.
[C]. The thigh bones of our legs are joined to the hip bone by the ball and socket joints.
[D]. The longest bone in human body is tibia.
Answer: Option D
Explanation:Femur, or thighbone, is the largest bone in our body. The head of our femur fits into our hip socket and the bottom end connects to our knee.
Q6
The soft and elastic bones present in the human skeleton are known as:
[A]. Carpals
[B]. Cartilage
[C]. Vertebrae
[D]. Collar bones
Answer: Option B
Explanation:Our skeleton consists of hard bones. However, at some places in the skeleton, there is a material which is not as hard as bones and which can be bent easily. That is called cartilage. Cartilage is a kind of softer and elastic bone which is present in nose, ear and the end of bones where they meet one another at a joint.
Q7
The pivot joints occur in our skeleton at:
[A]. Forearm and Knee
[B]. Knee and Neck
[C]. Forearm and Neck
[D]. Knee and Hip
Answer: Option C
Explanation:The pivot joint allows rotation around an axis. A pivot joint exist between our skull and the top vertebra of backbone. Another pivot joint occurs in the forearm or lower arm near the elbow. The pivot joint in the forearm make us turn our forearm to hold the palm of hand up or down.
Q8
With which of the following animals the terms “Slither” is associated:
[A]. Snake
[B]. Snail
[C]. Fish
[D]. Earthworm
Answer: Option A
Explanation:Snake moves forward by moving its body sideways in the form of many loops, and pushing against the ground. The special name of the wave like motion of the snake is called “slither”. And also remember, snake does not move in a straight line because the sideways pushes of the loops push the snake forward as well as sideways.
Q9
Snail moves with the help of its
[A]. Shell
[B]. Bone
[C]. Muscular foot
[D]. Whole body
Answer: Option C
Explanation:Snail moves with the help of a large, disc-shaped muscular foot. The whole body of a snail is soft and consists of a head, a foot and a shell. Shell is the outer structure (skeleton) of a snail, but it is not made of bones.
Q10
Which of the following joints are immovable?
[A]. Shoulder and Arm
[B]. Knee and Joint
[C]. Upper jaw and Skull
[D]. Lower jaw and Upper jaw
Answer: Option C
Explanation:Upper jaw and skull joints are immovable or fixed. Bones are held, so tightly together that they cannot move at all. The other options are: Shoulder and Arm is ball and socket joint, Knee and Joint is hinge joint, Lower jaw and Upper jaw is hinge joint.
What is pivotal joint?
The joint where our neck joins the head is a pivotal joint. It allows us to bend our head forward and backward and turn the head to our right or left.
What are fixed joints?
There are some bones in our head that are joined together at some joints. The bones cannot move at these joints. Such joints are called fixed joints.
What is skeleton?
The bones in our body form a framework to give a shape to our body, which is known as the skeleton.
What do you know about rib cage?
They join the chest bone and the backbone together to form a box. This is called the rib cage.
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