Study the diagrammatic representation : . Give the importance of circulation between these two organs.

Observe the diagrammatic representation. Name the animal A and B.

Give one important ore of aluminium?

The human blood vascular system is diagrammatically represented below. . What is the significance of Pulmonary circulation in the cardiac cycle?

A diagrammatic representation of a nephron is given. Identify the parts labelled es X and Y.

Give the biological importance of Na and K.

Students involved in nature club activity found some inter specific interactions between organisms in a garden pea. They made table of interaction giving + for beneficial - for detrimental and 0 for neutral interactions. Name the type of interaction between these organisms.