Push your hand deep inside a sack of wheat. Do you find it is warm inside?There is some heat being produced inside the sack of wheat. The seeds respire and in that process give out some heat.We see that respiration is a process that takes place in seeds even when some of the other life …
Rocks, soil, air, water, light and temperature are some of the abioticcomponents of our surroundings.
Plants, animals and microorganisms together constitute biotic components.
The presence of specific features and habits, which enable a plant or ananimal to live in a particular habitat, is called adaptation.
Muscle is the fibrous tissue in the body that has the ability to contract and relax . Muscles are attached to the bones of our skeleton through strong fibres called tendon. When the muscles attached to bone contracts, it pulls the bone due to which the bone moves at the joint.
Bristles are hair like structure, connected with muscles. The bristles help to get a good grip on the ground. ‘ Cavity: It is the hollow space or cavity in one bone, into which the other bone fits. Such joint allows movements in all directions.
Shoulder bone or Pectoral Girdle: The shoulder bone is formed by the collar bone and the shoulder blade. It is attached to the upper part of the rib-cage and to the upper arm bone.
A streamlined body ( BOAT SHAPE) is a shape that lowers the friction drag between a fluid ( air and water).
The joints where no movement of bones is possible are called fixed joint. The joints in the skull bone (cranium) are examples of fixed or immovable joints. Moveable joint: Movement is possible in these joints.
Ribs join the chest bone and the backbone together to form a box. This is called rib cage. Shoulder bones: The two bones of the shoulders are called shoulder bones. Skeleton: The framework of the body which is made up of bones and cartilage is called skeleton.
