Class 11
Hinge joints
A hinge joint allows the movement of bones in only one direction i.e. forward and backward. 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, and by the ligaments which hold the bones together at the joint.
JOINTS
The place where two or more bones meet in the skeleton is called a joint. Most of the joints allow the bones to move. The amount of movement depends on the type of joint. We can move our head ,arms ,hands ,legs and feet because all these parts have bone joints.
Define Photosynthesis.Write chemical equation .
Solution : Photosynthesis is a physico-chemical process by which green plants use light energy to drive the synthesis of organic compounds. It is an enzyme regulated anabolic process. Photosynthesis is the basis of life on earth because it is the primary source of all food on earth and it is responsible for release of in the atmosphere. …
OBESITY or OVERWEIGHT
Overweight and obesity are defined as abnormal or excessive fat accumulation that presents a risk to health.
Balanced Diet
Those diets have all the nutrients in adequate or optimum amounts like Carbohydrate , Proteins , Fats or Lipids , Vitamins and Minerals. The diets also contain a good amount of roughage and water