Name the various organelles of cell and mention the most important function of each.

Name three important functions of an Ecosystem.

Name two important functions of the kidneys.

What are nucleic acids? Mention their two important functions.

Figure of internal structure of mammalian heart is provided. Carefully study it and Give one most important function of Each of these parts.

List the main organelles of cell giving one function of each.

Name the photoreceptor cells of retina and mention their functions.

Name the smallest sized cell organelle.