Describe in detail the structucture and functioning mechanism of setae and parapodia in annelida with the help of diagrams .

Q. Setae or parapodia in animals belonging to phylum Annelida helps in:

Q. With the help of a labelled diagram, describe briefly the closing and opening mechanism in stomata of plants such as common grass.

Q. With the help of a neat and labelled diagram describe the anatomy of human eye. Explain the mechanism of vision.

Q. Closed blood vascular system and chitinous setae or parapodia are the characteristics of