Body Movements

Joints.

True

Ball and socket joint, pivotal joint, hinge joint and fixed joint.

We are able to bend or rotate our body only at joints.

Cartilage

It gives frame and shape to our body and helps in movement.

Ball and socket.

The joint where our neck joins the head is a pivotal joint.

Hinge

Joints at which bones cannot move are called fixed joints.

Ball and socket

True

Fixed joint

Skeleton

X-ray.

Rib cage

Some internal body parts are protected inside rib cage.

No

True

Part of skeleton which can be bent and is not as hard as bone is known as cartilage.

When the muscles become shorter, stiffer and thicker it is muscle contraction.

Skull protects brain.

True

Cartilage is found in ear and also in joints of body.

Contracts.

True

True

Shell

Foots made of muscles.

Muscles

False

Two

Hollow and light

True

Streamlined

Three

Fins.

True

Aristotle

Fast

Movement or the ability to move from one place to another. Locomotion is brought about by the combination of muscular and skeletal system.

Skeleton is the supporting framework, basic structure, or essential part of something.

Bones and muscles helps in movement of body.

A synovial joint, also known as diarthrosis, joins bones with a fibrous joint capsule that is continuous with the periosteal of the joined bones, constitutes the outer boundary of a synovial cavity, and surrounds the bones' articulating surfaces. The synovial cavity/joint is filled with synovial fluid.

The ankle joint is a synovial joint located in the lower limb. It is formed by the bones of the leg and the foot – the tibia, fibula and talus.

Hinge joint is a bone joint in which the articular surfaces are molded to each other in such a manner as to permit motion only in one plane.

Bone is the pieces of hard whitish tissue making up the skeleton in humans and other vertebrates.

Pivot joint, also called rotary joint, in vertebrate anatomy, a freely moveable joint that allows only rotary movement around a single axis. The moving bone rotates within a ring that is formed from a second bone and adjoining ligament.

One cannot rotate his neck completely.

The human arm is a complex system of bones, muscles, nerves, and vessels.

Joints are usually movable body part in which adjacent bones are joined by ligaments and other fibrous tissues

Joints are usually movable body part in which adjacent bones are joined by ligaments and other fibrous tissues

Ans: d.

A condyloid joint is an ovoid articular surface, or condyle that is received into an elliptical cavity. This permits movement in two planes, allowing flexion, extension, adduction, abduction, and circumduction.

A band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body.

Exoskeleton is the external skeleton that supports and protects an animal's body

Digestion is process carried out by human organs.

A boreal ecosystem is an ecosystem with a subarctic climate in the Northern Hemisphere

The abdomen contains all the digestive organs, including the stomach, small and large intestines, pancreas, liver, and gallbladder. These organs are held together loosely by connecting tissues (mesentery) that allow them to expand and to slide against each other. The abdomen also contains the kidneys and spleen.

A joint is the part of the body where two or more bones meet to allow movement. Generally speaking, the greater the range of movement, the higher the risk of injury because the strength of the joint is reduced. The six types of freely movable joint include ball and socket, saddle, hinge, condyloid, pivot and gliding.

The biceps muscle is located on the front of your upper arm and is composed of two heads. It contracts when forearm moves upwards

The triceps makes up the back of your arm and is made up of three heads. It expands when forearm moves upwards.

The skull is composed of 22 bones that are fused together except for the mandible.

For example hip joint

A natural or manufactured joint or coupling, in which a partially spherical end lies in a socket, allowing multidirectional movement and rotation is called ball and socket joint.

The rounded end of one bone fits into the cavity of the other bone. These are Ball and socket joints, allows movement in all direction.

A pivot joint is a type of synovial joint. In pivot joints, the axis of a convex articular surface is parallel with the longitudinal axis of the bone.

Hinge joints are formed between two or more bones where the bones can only move along one axis to flex or extend. The simplest hinge joints in the body are the interphalangeal joints.

Bone joint in which the articular surfaces are molded to each other in such a manner as to permit motion only in one plane is called hinge joint.

Most fibrous joints are also called "fixed" or "immovable", because they do not move.

Bone contains calcium, phosphorous and other useful minerals.

Ans: d.

Ans: a.

Ans: d.

Ans: b.

Earthworm does not have bones. It has muscles which help to extend and shorten the body. During movement, the earthworm first extends the front part of the body, keeping the rear portion fixed to the ground. Then it fixes the front end and releases the rear end. It then shortens the body and pulls the rear end forward. This makes it move forward by a small distance.

Earthworm does not have bones. It has muscles which help to extend and shorten the body. During movement, the earthworm first extends the front part of the body, keeping the rear portion fixed to the ground. Then it fixes the front end and releases the rear end. It then shortens the body and pulls the rear end forward. This makes it move forward by a small distance. Repeating such muscle expansions and contractions, the earthworm can move through soil.

The bristles are connected with muscles. The bristle help to get a good grip on the ground.

The earthworm eats its way through the soil. Its body then throws away the undigested part of the material that it eats. This activity of an earthworm makes the soil more useful for plants.

Bristles are tiny hair like structure found in earthworm.

Earthworms move easily on hard surface and slippery surface.

Walk, swim and fly are types of gait. Gait is the pattern of movement of limbs of animals.

Snail and snakes are limbless animals. No arms, legs, fins, gills, wings, feathers, nothing. They slide, slither and side wind for movement.

Worms and snakes slide, slither and side wind. Sliding is moving in continuous contact with a smooth or slippery surface. Slithering is sliding along a surface from side to side. Sidewinding is best exemplified by the rattlesnake, which moves about in loose sand by throwing loops of the body forward.

Worms and snakes slide, slither and side wind. Sliding is moving in continuous contact with a smooth or slippery surface. Slithering is sliding along a surface from side to side. Sidewinding is best exemplified by the rattlesnake, which moves about in loose sand by throwing loops of the body forward.

Worms and snakes slide, slither and side wind. Sliding is moving in continuous contact with a smooth or slippery surface. Slithering is sliding along a surface from side to side. Sidewinding is best exemplified by the rattlesnake, which moves about in loose sand by throwing loops of the body forward.

Ans: c.

A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. The word comes from vertebrae, the bones that make up the spine

An arthropod is an invertebrate (An invertebrate is an animal without a backbone)animal having an exoskeleton, a segmented body, and jointed appendages.

Ans: a.

Ans: b.

A cockroach can walk, fly and even climb.

Snail is protected by its external skeleton called as shell. Snail and other shelled creatures use shells like shields to protect themselves from predators, or animals that hunt them.

Tortoises have the ability to use their tough claws and strong legs to dig into the ground and create burrows, which protect them from both predators, as well as hot and cold climate conditions. A tortoise may dig several burrows in its territory as a means of escaping weather conditions or predators as needed.

Turtles and other shelled creatures use shells like shields to protect themselves from predators, or animals that hunt them. Turtles probably needed a shield on their backs and stomachs because they faced predators in the ocean from both above and below.

Entire body except the foot lies inside the shell. When disturbed, snail even retracts the foot in to the shell. Snail moves with the help of single muscular foot.

Snail moves with the help of single muscular foot. The under surface of the muscular foot is lubricated with mucus. The muscular foot glides over the surface. The rhythmic contractions and relaxations of this muscular foot bring about pulling action in the body. The secreted mucus reduces the risk of injury from sharp objects.

The tail flaps from side to side to make them swim in the right direction. Some fish, however, move by bending their bodies from one side to another in quick succession.

Movement of fish in water is also supported by air bladder filled with air. It helps the fish to rise or dive deep into water.

Snakes have a long back bone and many interconnected muscles that help them to slither. They have muscles connecting the backbone, ribs and skin. Snakes move in grass, sand and water. Though the snakes do not have arms or legs, they can climb trees.

Snakes have flexible backbones made up of vertebrae and ribs, skulls and jawbones with teeth. Two ribs attach to each vertebra, with the exception of the tail, which has no ribs. Bony projections of the vertebrae on the front and rear ends of the backbone lock the end vertebrae in place, allowing for flexibility of the backbone but preventing it from slipping out of place.

A cockroach is similar to other insects in the way its body is constructed. The body is divided into three parts—head, thorax, and abdomen. Three pairs of legs are attached to the thorax. Most cockroaches have three joints on each leg, which means they have 18 knees.

Ans: a.

Cow move with the help of legs.

Snake uses its whole body for moment.

Bird uses its leg to walk and wings to fly.

Insects use their wings to fly.

The swim bladder is located in the body cavity and is derived from an outpocketing of the digestive tube. It contains gas (usually oxygen) and functions as a hydrostatic, or ballast, organ, enabling the fish to maintain its depth without floating upward or sinking.

Ans: d.