Chapter 9 The Microscopic World

Chapter 9B Kingdom Protista

II. Kingdom Protista A. Description 2. Most are unicellular 1. Eukaryotic 2. Most are unicellular

II. Kingdom Protista A. Description a) Some form colonies 2. Most are unicellular a) Some form colonies b) A few are multicellular * Tissues

II. Kingdom Protista A. Description 2. Most are unicellular 1. Eukaryotic 2. Most are unicellular 3. Most live in freshwater environments

II. Kingdom Protista B. Three general types Protozoans a) Animal-like * most are capable of movement * must eat

II. Kingdom Protista B. Three general types Protozoans b) examples * paramecium * amoeba

II. Kingdom Protista B. Three general types Protozoans c) movement

c) Protozoan Movement Pseudopod Seen in the ameoba “false foot” Amoeboid movement Seen in the ameoba

c) Protozoan Movements Cilia Seen in the paramecium

c) Protozoan Movements Flagella Seen in Giardia

II. Kingdom Protista B. Three general types Protozoans d) nutrition * consumers

II. Kingdom Protista d) nutrition * methods - surround and engulf food - oral groove

Nutrition Methods Surround & Engulf Food Oral Groove

II. Kingdom Protista B. Three general types Protozoans d) nutrition e) surviving freshwater environments Necessary for freshwater organisms

II. Kingdom Protista e) surviving freshwater environments * contractile vacuoles

contractile vacuoles An organelle in freshwater protozoans that pushes excess water out of their body

The Variety of Shapes for Contractile Vacuoles Amoeba Paramecium

II. Kingdom Protista B. Three general types f) reproduction Protozoans * Asexually by mitosis (binary fission)

II. Kingdom Protista B. Three general types f) reproduction Protozoans *Some reproduce sexually by conjugation

A temporary connection between 2 organisms in order to exchange DNA Conjugation A temporary connection between 2 organisms in order to exchange DNA

Protozoan Reproduction Binary fission (Amoeba) Conjugation (Paramecium)