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 statement is or are incorrect?
[A]. A fish swims in water by moving its tail from side to side.
[B]. The effect of left side of tail on water is compensated by the fish by turning its head to the right side.
[C]. Snakes have very small legs and even there move quite fast by making loops.
[D]. Snake does not move in a straight line.
Answer: Option C
Explanation:Snakes do not have legs, even then they move quite fast because a snake moves forward by moving its body sideways in the form of many loops and pushing against the ground.
Q2
Read the following sentences carefully, and choose the incorrect one:
[A]. The head of snail has two pairs of tentacles for catching prey.
[B]. Shell is the outer skeleton of snail but it is not made of bones.
[C]. The foot of snail is large, flat and disc-shaped, which is made of strong muscles.
[D]. Snail have four sets of muscles in the foot of snail which contract and expand alternately, producing a kind of wave effect.
Answer: Option D
Explanation:Snail have two sets of muscles in the foot of snail which contract and expand alternately, producing a kind of wave effect.
Q3
Which of the following statement is or are correct?
[A]. In the ball and socket joint, one end of the bone has a round shaped like a ball, which fits into a socket (hollow space) in the other bone.
[B]. A ball and socket joint allows much more movement of bones than a hinge joint.
[C]. At the shoulder, the ball on the top end of upper arm bone fits into the socket in the shoulder blade bone to form a ball and socket joint.
[D]. All the above.
Answer: Option D
Explanation:Here, all the statements are correct. Hence, your answer will be option [D].
Q4
Consider the following statements and choose the incorrect one:
[A]. The knee joint is an example of ball and socket joint.
[B]. 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.
[C]. The lower end of upper arm bone is in the shape of a knob and the upper end of lower arm bones is in the shape of a cup.
[D]. The ligaments hold the upper arm bone and lower arm bones together at the elbow joint.
Answer: Option A
Explanation:The knee joint is an example of hinge joint. At the knee, the lower end of upper leg bone is in the form of a knob and the upper end of the lower leg bones is in the form of a cup. The knob of upper leg bone fits into the cup of lower leg bone to form a hinge joint at the knee. The ligaments hold the upper leg bone and lower leg bones together at the knee joint.
Q5
Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?
[A]. The bony framework inside our body is called skeleton.
[B]. The bones of skeleton provide a framework which holds our body together.
[C]. Bones are hard and tough but cartilage is softer than bones.
[D]. There are 306 bones in the human skeleton or human body.
Answer: Option D
Explanation:There are 206 bones in the human skeleton or human body.
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
Consider the following statements and choose the correct one:
[A]. The fish has streamlined body.
[B]. The fish has flexible back-bone.
[C]. The fish has powerful body muscles.
[D]. All the above.
Answer: Option D
Explanation:Here, all the statements are correct. Hence, your answer will be option [D].
Q9
Which of the following organisms does not have both muscles and skeleton for movement?
[A]. Dog
[B]. Snail
[C]. Earthworm
[D]. Human being
Answer: Option B
Explanation:Snail does not have both muscles and skeleton for movement. The shell serves for muscles attachment and protection. The movement is carried out only with the help of large disc-shaped muscular foot that has two sets of muscles. In earthworm, a hydrostatic skeleton (fluid filled cavity surrounded by muscles) is present. The alternate contraction and relaxation of muscles and pressure of the fluid helps in burrowing. Dog and human beings have Musculo-skeletal system for movement.
Q10
Which of the following parts of our body helps us in movement?
[A]. Bones and Muscles
[B]. Skin and Organs
[C]. Bones and Organs
[D]. Skin and Muscles.
Answer: Option A
Explanation:Our bones and muscles together form the musculoskeletal system that enables the movement of body parts and the whole body from one place to another.
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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