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Diversity of Protist Chapter 19.1 Pages 556-558.

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1 Diversity of Protist Chapter 19.1 Pages

2 Protist is a eukaryote that is not an animal, a plant, or a fungus.
 Protists may be single-celled or multicellular, microscopic or very large.  They have different ways of moving around and responding to the environment.  Some protists reproduce asexually, whereas others reproduce both asexually and sexually. 

3 Protists can be animal-like, plantlike, or fungus like. 
The definition of protists is based on the absence of traits that characterize the other kingdoms This makes protist difficult to classify

4 Protozoa   is often used informally to describe the many phyla of animal-like protists Such as;  Protozoa with Flagella Protozoa with Pseudopods Protozoa with Cilia

5 Animallike Protist are heterotrophs— organisms that consume other organisms. all animal-like protists are single-celled, while all animals—no matter how simple—are multicellular

6 Pseudopod temporary or semi permanent extension of the cytoplasm,
used in locomotion and feeding by all sarcodine protozoans

7 Amoeba Moving with Pseudopods

8 Protist moving with Cilia

9 Plantlike Protist make their own food by photosynthesis just as plants do.   do not have roots, stems, leaves, specialized tissues, or the same reproductive structures that plants have  may be single-celled or multicellular. 

10 Algae  Plant like protist that have chloroplasts and can produce their own food through photosynthesis. 

11 Plant Like Protist

12 Funguslike Protist Include Slime Mold and water Mold
decompose dead organisms.   play an important role in ecosystems by recycling carbon and nitrogen back into the soil.  can move during part of their life cycle, whereas fungi cannot.

13 Funguslike Protist

14 Diversity of Fungi  Chapter 19.5 Page

15 Fungi are adapted to absorb their food from the environment.
fungi do not have true roots, leaves, and stems. Fungal cell walls are made of chitin.  Except for the yeasts, fungi are multicellular organisms. Fungi reproduce sexually and asexually   some fungi can be pathogenic, or disease-causing. Fungi come in many shapes and sizes. Primitive Fungi Sac Fungi Bread Molds Club Fungi

16 Chitin a tough polysaccharide that is also found in the shells of insects and their close relatives. 

17 antifungal medications
Some antifungal medications can damage the patient’s own tissues.  Antibiotics affect prokaryotes, whereas fungi and humans are eukaryotes.

18 Lichen is a mutualistic relationship between a fungus and algae or photosynthetic bacteria.  Only certain fungi, algae, or cyanobacteria can combine to form a lichen body. The body itself consists mainly of fungal hyphae that surround and grow into the algal cells

19 Fungi as Mutualist Lichens produce oxygen
 they grow in unfavorable environments, which then allows other organisms to grow;  Lichens are extremely sensitive to air pollution and are used in environmental science as air-quality indicators  they are important decomposers that return nutrients to the soil;  they can be used to produce antibiotic compounds;  their pigments are used as dyes.

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