1. Exocrine glands: These glands pour their secretions at a specific site. e.g. salivary gland, sweat gland, etc.
2. Endocrine glands: These glands release their secretions directly into the blood stream,...
Nephridia are simple or branching tubules used for excretion which open to the exterior through pores called nephridiopores.
Two major types of nephridia are as follows:
i. Protonephridia:
These are network of dead...
