PROTOZOA
INTRODUCTION :
• Protozoa are a diverse group of single celled, eukaryotic
microorganisms that primarily inhabit aquatic
environments.
• They exhibit various modes of locomotion, such as cilia,
flagella, or pseudopodia.
• Protozoa play crucial roles in nutrient cycling and can be
free-living or parasitic.
GENERAL CHARACTERS :
➢ The protozoans are small and generally microscopic
organisms.
➢ They have protoplasmic grade of body organization.
➢ They are acellular animals without tissues and
organs.
➢ They are solitary or colonial.
➢ The shape of the body is variable; it may be spherical,
oval, elongated or flattened.
➢ Locomotory organs are pseudopodia, flagella or cilia.
➢ Nutrition may be holozoic, holophytic, saprozoic or
parasitic.
➢ Respiration occurs by diffusion through body surface.
