These AP 6th Class Science Important Questions 5th Lesson Body Movements will help students prepare well for the exams.
Body Movements AP 6th Class Science 5th Lesson Important Questions and Answers
Very Short Answer Questions (2 Marks)
Question 1.
What would happen if there is a single bone in your fingers ?
Answer:
1. If the fingers had only a single bone, we cannot bend our fingers.
2. We cannot perform various activities and cannot hold any item properly.
Question 2.
Crawling snake, jumping frog, flying bird are they amazing to you ? Why do you think so?
Answer:
1. The body structure of these creatures is so designed that it helps their movement freely.
2. Snake crawls, frog jumps, birds fly.
3. The bones and muscles developed in their bodies help to get their food by their movement.
Question 3.
“Which joints involved in plucking flowers, making garlands,” Ravi’s mother asked. What is his answer ?
Answer:
The hinge joints in the fingers are involved in plucking flowers and making garlands.
Question 4.
Give some examples where you are able to feel the movement of muscles.
Answer:
If we perform the following actions we were able to feel the movement of muscles,
- Fluttering your eyelashes
- Chewing
- Breathing in and out
- Lifting a weight
- Moving your-toes
Question 5.
How many vertebrae are there in the backbone of an infant ? What happens to them later ?
Answer:
1. There are 33 separate vertebrae in the backbone of an infant.
2. Later the nine lower vertebrae merge and form a single bone.
Question 6.
What are called muscles ?
Answer:
1. If we observe a cow, bull or horse, walking or running, we can see some fleshy structures moving beneath their skin, usually around the shoulders and hips.
2. These tender fleshy structures are called muscles.
Question 7.
How can you say that your backbone behaves like a spring ?
Answer:
1. We may have often done the exercise in which we stand straight up and touch the floor with our palms by bending our body but without bending our knees.
2. We may have also done the exercise in which we have bent our body to the left and right at the waist.
3. All these are performed because our backbone behaves like a spring.
Question 8.
What is the importance of locomotion in living organism ?
Answer:
1. Movement or locomotion is an important function in every living organism.
2. It is very interesting to watch ants running hurriedly in a line, squirrels and monkeys’ jumping on trees.
3. We can enjoy watching various locomotions in the animals kingdom.
Question 9.
Why do we need two muscles together to move a bone ?
Answer:
1. A muscle can only pull, it cannot push. Thus, two muscles are required to work together to move a bone.
2. When one muscle contracts, the bone is pulled, when another muscle of the pair pulls, it brings the bone in it’s original position.
3. Thus, skeleton system helps in the movements of our body.
Question 10.
How can we know the shape of our skeleton ?
Answer:
1. By feeling the skeleton on the back of our body.
2. We can also know the shape of the body by the X-ray machines.
3. Skeleton system helps in the movements of our body.
Question 11.
How do we bend our elbow ?
Answer:
1. Two different bones are joined at the elbow.
2. The joint present at the elbow is hinge joint. That helps in it’s bending.
Question 12.
Draw a neat diagram of human skeleton.
Question 13.
Draw a neat diagram of human backbone.
Answer:
Question 14.
Draw a neat diagram of pivotal joint.
Answer:
Question 15.
Draw a neat diagram of ball and socket joint.
Answer:
Question 16.
Draw a neat diagram of pelvic girdle
Answer:
Question 17.
Write the different movements seen in the following organisms.
a) Fish
b) Snake
c) Snail
d) Cockroach
Answer:
a. Swimming
b. Slithering
c. Creeping
d. Walking and flying for shorter distances.
Question 18.
“Our elbow cannot move backwards” – Can you think why?
Answer:
1. Our elbow cannot move backwards because the joint found in elbow is single joint.
2. In this type of joint movement of bones occurs in only one direction.
Question 19.
Even though an earthworm does not have bones or legs, how does it move ?
Answer:
1. The earthworm does not have bones and legs.
2. It has muscles which help them to lengthen and shorten the body to move.
Question 20.
Bones are hard structures and cannot be bent. But we can still bend our elbow, knee, etc. How is this possible?
Answer:
1. Elbow and knee are not made of a single bone but they are made up of two or more bones which are joined to each other by a joint – i.e. hinge joint.
2. This joint along with the muscles help us to bend the elbow and knee.
Question 21.
The skeleton of cockroach is called exoskeleton. Why ?
Answer:
1. The body of cockraoch is covered with hard and tough outer covering called exoskeleton.
2. The skeleton of cockroach is called exoskeleton because it is outside the body.
Question 22.
Complete following table.
Answer:
| Name of the animal | Movements seen |
| 1) Horse | Running and walking |
| 2) Snail | Creeping |
| 3) Snake | Slithering |
| 4) Cockroach | Walking and flying (for short distance) |
Question 23.
How many number of bones are present in the human skeletal system ? Give it’s functions.
Answer:
1. The human skeletal system has 206 bones
2. The functions of skeletal system are
- Giving shape and support to the body
- Protecting internal organs
- Making movement possible
Question 24.
Explain how do we bend our elbow.
Answer:
i. Elbow is not one long bone from the upper arm to our wrist.
ii. It is different bones joined together at the elbow.
iii. The joint present at the elbow is hinge joint that helps in it’s bending.
Question 25.
Write two ways by which we may know the shape of human skeleton ?
Answer:
1. We can know the shape of the human skeleton by feeling it on the back of our body.
2. We can also take the X-ray images of skeleton by X-ray machines.
Question 26.
Draw a neat diagram showing hinge joints of the knee.
Answer:
Question 27.
Draw a neat diagram showing the bones of the hand.
Answer:
Question 28.
Draw a neat diagram showing the rib.
Answer:
Question 29.
Draw a neat diagram showing the structure of human skull.
Answer:
Short Answer Questions (3 Marks)
Question 1.
What are the uses of muscles and bones ?
Answer:
1. Muscles are helpful in different activities like sitting, lifting, carrying loads fighting, boxing, etc.
2. Fluttering of eye lashes, chewing, breathing in and out, lifting a weight, moving our toes are done with the help of muscles only.
3. Bones collectively form skeleton which supports our body frame work.
4. Bones give mechanical support to our body.
Question 2.
Differentiate the ball and socket joint from hinge joint.
Answer:
| Ball and socket joint | Hinge joint |
| 1) The rounded end of one bone fits into the hollow end of the other bone. | 1) Flinge joints help the bones to move in one direction. |
| 2) It is very useful to rotate our shoulder in 360° angle. | 2) It is very useful to move wrists, elbows freely in only one direction. |
| 3) It is present in shoulder and hip region. | 3) It is present in wrist, elbows and knees |
Question 3.
How is the body of a fish suitable for swimming ?
Answer:
1. The body of the fish is streamlined. The shape is such that it allows the fish to move in water easily.
2. The skeleton of the fish is covered with strong muscles.
3. While swimming, muscles make the front part of the body swing towards one side while the tail swings its body towards the opposite side, (fig- c)
4. This creates a jerk and pushes the body forward.
5. A series of such jerks help the fish swim forward.
6. The tail fins also aid in this movement, (fig. c)
Question 4.
What would happen if there are no bones and joints in our body ?
Answer:
1. If there are no bones in our body, our body would be non-functional and we would die.
2. The human body without bones is just like an semi-empty sac.
3. If we have no joints, we would not bend twist and turn our body. Life becomes impossible without joints in our body.
Question 5.
How do muscles work?
Answer:
1. Muscles work in pairs.
2. When one of them contracts, the bone is pulled in that direction and the other muscle of the pair relaxes.
3. To move the bone in the opposite direction, the relaxed muscle contracts and the first one relaxes.
4. Thus two muscles have to work together to move a bone.
5. Some muscles are connected directly to bones.
Question 6.
How do you appreciate locomotion in birds ?
Answer:
Birds fly in the air and walk on the ground. Birds can fly because their bodies are well suited for flying. Their bones are hollow and light.
The bones of the hind limbs are typical for walking and perching.
Bony parts of the fore limbs are modified to hold muscle of flight which is used to move the wings up and down.
Question 7.
Read the table.
| Animal | Body part used for moving | How does the animal move ? |
| Bird | Wings | Hops, flies, walk |
| Snake | Vertebrae | Crawls on land |
| Fish | Muscles | Swimming |
| Cow | Legs | Walk, run |
| Human | Legs and hands | Walk, run and jump |
Now answer the following questions.
1. How does the fish move ?
2. Which animal crawls on land ?
3. Which body parts is used for moving by human beings ?
4. Which body part is used for moving by snake ?
Answer:
1. By swimming
2. The snake
3. Legs and hand
4. Vertebrae
Question 8.
Write the difference between bone and cartilage.
Answer:
| Bone | Cartilage |
| 1) They are hard in nature | 1) They are soft in nature. |
| 2) They are not flexible. | 2) They can bend upto some extent. |
| 3) They form the framework of the whole body. | 3) They form some parts of our body. |
| 4) Bones form body parts like backbone, ribcage, etc. | 4) Cartilage is present in the body parts like pinna of ear, tip of the nose, etc. |
Question 9.
Earthworms are considered as “friends of farmers”. Can you guess the reason for it?
Answer:
1. Earthworms move through the soil and make it porous. It enhances the aeration of the soil.
2. The earthworm’s body secretes the undigested materials that increase the fertility of soil.
Question 10.
How many bones are present in human skeleton system ? Write its uses.
Answer:
1. In our skeleton system, there are 206 bones.
2. Skeleton system gives shape and support to the body.
3. It protects internal vital organs like heart, lungs and liver.
Question 11.
Answer the following questions in a word or phrase.
i. Help in the movement of body by contraction and relaxation.
ii. Joint which allows movements in all directions.
iii. Bones which enclose the organs of our body that lie below the abdomen.
iv. Joint where our neck joins the head.
Answer:
i. Muscles
ii. Ball and socket joint
iii. Pelvic bones
iv. Pivotal joint
Question 12.
Write a short note on cartilage.
Answer:
1. Bone present in the cartilage is a kind of softer and elastic bone present in the pinna of ears (upper part..
2. It is present at the end of nose.
3. It is also present between the vertebrae of backbone.
4. It is present on the end of bones where they meet one another at a joint.
Question 13.
Write a short note on the bones of the hand.
Answer:
Our hand is made up of the three parts i.e. wrist, palm and fingers. The number of bones present in these parts are :
Wrist – 8 small carpels.
Palm – 5 long meta carpels
Fingers – 3 bones in each finger called phalanges.
Thumbs are made up of 2 bones each.
Question 14.
What are the functions of pelvic bones ?
Answer:
The pelvic bone forms a large basin shaped framework at the lower end of the backbone.
Functions:
- Pelvic bones protects and supports the lower organs of the body like intestines, urinary bladder, internal sex organs, etc.
- It attaches the legs to our body.
- It provides sites for the attachment of muscles that move our legs, hips, trunk, etc.
Question 15.
What are the functions of shoulder bones ?
Answer:
1. Collar bones on two sides of the neck keep our shoulders apart.
2. Shoulder blades attach the arms to our body.
3. Shoulder blades provide sites for muscle attachments which move the neck, arms and upper part of the body.
Question 16.
Complete the following table.
Answer:
| Organism | Locomotary organs |
| 1) Snake | Whole body |
| 2) Eagle | Wings |
| 3) Fish | Fins |
| 4) Cow | Limbs |
Question 17.
Complete the following table.
Answer:
| Name of the joint | Location |
| 1) Hinge joint | Knee and elbow |
| 2) Ball and socket joint | Shoulder and hip region |
| 3) Sliding joint | Vertebral column, wrist and ankle |
| 4) Pivot joint | Neck region |
Question 18.
Write the answers for the following statements given below.
a. Part of the body with a fixed joint.
b. Framework of bones which gives shape to our body.
c. Joint where our neck joins the head.
Answer:
a. Upper jaw with skull
b. Skeleton
c. Pivot joint
Question 19.
Read the following statements and answer them.
a. How many bones does your middle finger have ?
b. Can we bend our finger at every joint ?
c. What will happen if your hand had only one bone ?
Answer:
a. Our middle finger has 3 bones.
b. Yes, we can bend our fingers at every joint.
c. If our hand had only one bone then we could not be able to bend our fingers and other parts of our hard.
Question 20.
Explain the structure of a skull.
Answer:
1. The skull is made up of many bones joined together.
2. It encloses and protects the brain.
3. The joints between skull bones are fused.
4. They are also called fixed joints.
5. Skull placed on the top of backbone can be moved up, down and side wards.
Long Answer Questions (5 Marks)
Question 1.
Write a short notes on different types of joints in our body.
Answer:
1. The point where two bones meet is called a joint.
2. There are different types of joints in our body to help us carry out different move¬ments and activities,
3. The joints are divided into two types :
a. Movable joints,
b. Immovable joints or fixed joints.
a. Movable joints are of four types. They are
- Ball and Socket joint: It is present at the shoulder and hip region. The rounded end of the bone fits into the hollow end of the other bone.
- Hinge joint: It helps the bones to move in one direction. They are present in wrists, knee and elbow.
- Sliding joint: The joint where the bones slide over each other is called the Sliding joint. It is present in the vertebral column, wrist and ankle.
- Pivot joint: The joint that joins the skull to the backbone is called Pivot joint. It helps in the movement of neck in our body.
b. Immovable joints : Some joints between bones in our body can’t move. Such joints are called fixed joints. They are present in skull. Eg : Upper jaw.
Question 2.
How do muscles work ? Explain.
Answer:
1. Muscles work in pairs.
2. When one of them contracts, the bone is pulled in that direction and the other muscle of the pair relaxes.
3. To move the bone in the opposite direction, the relaxed muscle contracts and the first one relaxes.
4. Thus two muscles have to work together to move a bone.
5. Some muscles are connected directly to bones.
Case Based Questions (4 Marks)
1. Read the following information carefully and answer the questions.
There are many bones present in each part of the body. We can bend or move our
body only at those points where bones meet. There are different types of joints in our body to help us carryout different movements and activities.
Question 1
Number of bones present in human body ….. ( )
A) 200
B) 206
C) 210
D) 214
Answer:
B) 206
Question 2.
Which of the following help us to move or bend our body ? ( )
A) Bones
B) Joints
C) Tendons
D) A and B
Answer:
D) A and B
Question 3.
We can see ball socket joint in ( )
A) Elbow
B) Wrist
C) Shoulder
D) Neck
Answer:
C) Shoulder
Question 4.
Pivotal joint is seen in ( )
A) Shoulder
B) Thigh
C) Neck
D) Wrist
Answer:
C) Neck
Question 5.
In knee, we can see the ( )
A) Ball socket joint
B) Pivotal joint
C) Sliding joint
D) Hinge joint
Answer:
D) Hinge joint
2. Read the following information carefully and answer the questions.
All the bones in our body also form a frame work to give a shape to our body. This framework is called skeleton. We can have some idea about the shape and number of bones in some parts of our body by feeling them. One way we could know this shape better would be to look at X-ray images of the human body.
Question 1.
Doctors use X-ray images to find out
A) haemoglobin percentage in blood.
B) the functioning of heart.
C) the functioning of brain.
D) any possible injuries that might have happened to the bones.
Answer:
D) any possible injuries that might have happened to the bones.
Question 2.
The frame work of our body is
A) Skeleton
B) Pelvic girdle
C) Rib cage
D) Knee Joints
Answer:
A) Skeleton
Question 3.
The longest bone of the human skeleton
A) Femur
B) Shoulder bone
C) Neck bone
D) Elbow bone
Answer:
A) Femur
Question 4.
X-rays shows
A) The shape of the bones
B) The shape of the muscles
C) The internal structure of organs
D) The number of bones in the skeleton
Answer:
A) The shape of the bones
Question 5.
Immovable joints are seen in ( )
A) Elbow
B) Shoulder
C) Knee
D) Skull
Answer:
D) Skull
3. Read the following information carefully and answer the questions given below.
We see that the ribs are curiously bent. They join the chest bones and the backbone together to form a box. This is called the rib cage. There are 12 ribs on each side of chest. Some important internal parts of our body lie protected inside this cage.
Question 1.
Liver and heart are protected by .. ( B )
A) Skull
B) Rib cage
C) Pelvic girdle
D) Joints
Answer:
B) Rib cage
Question 2.
Rib cage consists of
A) 13 bones
B) 16 bones
C) 18 bones
D) 12 bones on each side of chest
Answer:
D) 12 bones on each side of chest
Question 3.
Ribs join the chest bone and the … .. to form a box. ( A )
A) Back bone
B) Skull
C) Pelvic girdle
D) Hinge joint
Answer:
A) Back bone
Question 4.
Ribs are made of
A) Bones
B) Cartilage
C) Vertebrae
D) Myonemes
Answer:
B) Cartilage
Question 5.
Ribs help in
A) Respiration
B) Circulation
C) Excretion
D) Reproduction
Answer:
A) Respiration
4. Read the following information carefully and answer the questions.
The skull is made up of many bones joined together. It encloses and protects a very important part of the body, the brain. We discussed many bones the joints in our skeleton. There are some additional parts of skeleton that are not as hard as the bones and which can be bent. These are called cartilage.
Question 1.
The very important part of our body is ( )
A) Joints
B) Bones
C) Cartilage
D) Brain
Answer:
D) Brain
Question 2.
Brain is protected by ( )
A) Rib cage
B) Cartilage
C) Joints
D) Skull
Answer:
D) Skull
Question 3.
Immovable joints are present in ( )
A) Pelvic girdle
B) Skull
C) Cartilage
D) Rib cage
Answer:
B) Skull
Question 4.
The bones which can be bent are made of ( )
A) Calcium carbonate
B) Calcium phosphate
C) Calcium silicate
D) Cartilage
Answer:
D) Cartilage
Question 5
Cartilage can be seen in ( )
A) Ear lobe
B) Joints of the body
C) Pelvic girdle
D) A and B
Answer:
D) A and B
5. Read the following information carefully and answer the questions given below.
Have you noticed that the shape of a boat is some what like a fish. The head and tail of the fish are smaller than the middle portion of the body – the body tapers at
both ends. This body shape is called ‘streamlined’.
Question 1.
Which of the following has streamlined body ? ( )
A) Fish
B) Snake
C) Bird
D) Snail
Answer:
A) Fish
Question 2.
The locomotory organelles of fish are ( )
A) Gills
B) Fins
C) Tail
D) B and C
Answer:
D) B and C
Question 3.
Streamlined body helps in ( )
A) allow the fish to move in water
B) in breathing air
C) catch the prey
D) reproduction
Answer:
A) allow the fish to move in water
Question 4.
The respiratory organs of fish are ( )
A) Gills
B) Fins
C) Tail
D) Scales
Answer:
A) Gills
Question 5.
The feature of streamlined body is ( )
A) Round shaped at both ends
B) The head and tail are smaller than the middle portion of the body
C) The body bulges at both ends
D) None of the above
Answer:
B) The head and tail are smaller than the middle portion of the body