Feb 19 - 23 Kingdom Protista

Science Thoughts 2/19 What are the four protists that we are studying? Amoeba Euglena Volvox Paramecium

Quiz corrections Protist work Discovery ed Monday in class Quiz corrections Protist work Discovery ed

What are the three ways that protists move? Pseudopod Flagellum Cilia Science Thoughts 2/20 What are the three ways that protists move? Pseudopod Flagellum Cilia

Quiz corrections (due today) Protist work Discovery ed Tuesday in class Quiz corrections (due today) Protist work Discovery ed

Cytoplasm moving – amoeba Oval w/ flagellum/eyespot – euglena Science Thoughts 2/21 How can you tell the difference between the four protists by looking at them? Round ball – volvox Cytoplasm moving – amoeba Oval w/ flagellum/eyespot – euglena Oval w/ cilia/oral grove - paramecium

Notes Work on Protist work Wednesday in class Notes Work on Protist work

Amoeba Reproduces through binary fission They split in half – creates an exact copy of itself. Moves by stretching its cytoplasm into finger like extensions. Called pseudopods Cell membrane is very flexible allowing the amoeba to change shapes easily Eats by “catching” or “trapping” its food by surrounding it with pseudopods Eats algae, bacteria, plant cells, microscopic protoza

Paramecium Paramecium are able to move because it is covered with tiny hair like structures called cilia Cilia also help the paramecium catch its food and direct it into its tiny mouth like opening called the oral groove Eats tiny algae, plants Anal pore gets rid of waste Has two nuclei – one big and one small Big nuclei operates as the director of the cell Small nuclei is used only for reproduction Reproduces with binary fission Splits in half – creates an exact copy of itself.

Euglena Has characteristics that are both plant like and animal like. Euglena does not have a cell wall, like all other plant cells. Euglena does have chloroplast which allows the protist to carry out photosynthesis If there is no light the euglena can also catch food using its flagellum Euglena is able to move with the help of help of its flagellum A long whip like tail Has an eyespot, this allows the protist to detect light.

Volvox Lives in spherical colonies – called “parents” Composed of thousands of cells – each are interconnect and arranged to form a hollow sphere. Each individual cell has a flagellum, which allows the entire colony move Eventually the “parent” burst and the daughter colonies spread out to form new colonies. Can absorb food through the surface or produce food through the process of photosynthesis

How do each of the four protist that we are studying obtain energy? Science Thought 2/22 How do each of the four protist that we are studying obtain energy? Volvox - autotrophic Amoeba - heterotrophic Paramecium - heterotrophic Euglena – autotrophic and heterotrophic

Protist Work Project Work Thursday in class Protist Work Project Work

How do each of the four protist that we are studying reproduce? Science Thought 2/23 How do each of the four protist that we are studying reproduce? Volvox – asexual and sexual Amoeba – asexual (rare sexual) Paramecium – asexual and sexual Euglena – asexual only

Protist work Project work Friday in class Protist work Project work