The  blood circulatory system  ( cardiovascular system ) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the  blood  vessels runni…

SENSATIONS AND RESPONSES Stimuli   : The senses that evoke responses in organisms.  There are specialized cells in the sense organs and other parts of t…

Eye Eye socket depressions in the skull External eye muscles fix the eye balls in the orbit Eyebrow Protects…

materials for teachers click below Let’s Regain Our Field.ppt (windows) Let’s Regain Our Field.ppt (Ubuntu) Let’s Regain Our Field.pdf

Hormones play a major role in the control and coordination of life activities. They are the chemical messages that help to maintain the homeostasis of body activities.…

Most of the vital activities taking place in plants and animals are similar. One such activity is the production of energy. For th production of energy, is it enough tha…

A complex living body is formed by the continuous division and  differentiation of cells. In organisms that belong to higher levels of  organization, different types of …

Selecting food items by giving importance to taste can be harmful to health. Though fibre content in cereals and vegetables do not undergo digestion, they help in the …

Now, have you will understood that organisms recognise their  surroundings with the help of the receptors present in the sense  organs. This helps them to satisfy their …

The problems of the eyes caused by the excessive use of cell phones, computer, tablet etc is called computer vision syndrome. The continuous use of such devices affects …

Though organisms  show diversity in their external characters, their cells show  resemblances in their structure and function. This unity at  the micro level is a clea…

It is not when natural calamities happen that one should think  about nature conservation. Nature conservation should become  part and parcel of everyone's life. Nat…

The nervous system helps us to experience various stimuli as well  as to respond towards them. Special care should be taken to  maintain the health of this organ system.…

In nature, there are various methods of reproduction to produce new  generations . This is a method of asexual reproduction seen in Hydra, Yeast etc. The buds formed…