Presentation on theme: "The Protists Chapter 19.1 page 502 - 525. The Fungi Chapter 20 Page 528 - 547."— Presentation transcript:
The Protists Chapter 19.1 page
The Fungi Chapter 20 Page
(503) What is a protist? Kingdom Protista: 1) Most diverse kingdom 2) Unicellular and Many multi-cellular 3) Microscopic 4) Some make own food,_______________ some don’t, __________________ What then, do all protists have in common? They are all ____________ membrane bound organelles Nucleus
Groups of Protista 5) A ______________ is a unicellular animal like organism. –Moist environments –Very diverse group –All feed on other organism (dead or alive) They are therefore _______________. 6) Four Diverse Groups –Amoebas (have pseudopodia) –Flagellates (have flagella) –Ciliates (have cilia) –Sporozoans (parasites)
Amoeba 7) Moves by sending out extensions of the plasma membrane to move and feed 8) These extensions are called ___________. 9) Do not have a cell wall 10) To feed, the pseudopodia surrounds the food Video: amoeba
Amoeba 11) Amoebas can remove excessive water with little pumps called ___________ ________ 12) Found in moist environments 13) Amoebas found in the sea are part of the ______ 14) Plankton is assortment of organisms that float in oceans and form base of the ocean’s food chain. 15) Radiolarians are an important part of plankton too. 16) Most amoebas reproduce by ________________
Flagellates 17) Get their name because they are protists with one or more ____________. 18) Flagella allow for the protist to move about. 19) Some flagellates are parasites, causing diseases like sleeping sickness. 20) Some protozoa are found in the guts of termites and will digest cellulose as food. Video- dinoflagellates
ZZ oomastigina – African sleeping sickness (506) 21) From bite of tsetse fly (506) 22) Cause chills and rashes, infect nerve cells 23) Lose consciousness and laps into deep & fatal coma Chapter 19 Flagellates:
Ciliate What are ciliates? 24) Contain _________, hair-like projections to move from place to place 25) Paramecia are one of the largest unicellular organisms. 26) Use cilia, oral groove, gullet and food vacuole for digestion. 27) Another ciliate: Stentor Paramecium Stentor
28) Paramecia reproduce asexually and sexually by _____________. In this process paramecia join and exchange genetic material. 29) Also paramecia divide through asexual reproduction, by dividing into two identical daughter cells Asexual reproduction.
Sporozoans 30) Most of the Protist are in the group Sporozoans, which produce __________. 31) Spores are a reproductive cell with a hard outer coat that produces a new organism without fertilization. 32)All are __________ 33) This is the life cycle of malaria, a disease caused by a Sporozoan through the life cycle of a Mosquito.
Reinforcement and Study Guide 19.1 Answers page 83. Protists 1.True 2.Animal-like, plantlike, and fungus-like 3.True 4.Animal-like 5.Pseudopodia 6.Contractile vacuole 7.Asexual reproduction 8.Flagellates 9.Cilia 10.Conjugation 11.Sporozoans 12.Plasmodium 13.mosquito
Algae: Plantlike Protist 19.2 What are algae? 34) Protists that photosynthesize are algae. 35) Algae use chlorophyll to trap energy from sun. 36) Up to 4 kinds of chlorophyll w/ various pigments. (variety of colors in algae) 37) Can be unicellular or multicellular. 38)_Photosynthesizing algae are called ________________ Diversity of Algae 39) Six phyla of algae 40) Three of phyla (euglenoids, diatoms & dinoflagellates) are unicellular
Euglenoids (511) What are euglenoids? 41) Have both plant and animal characteristics. 42) Contain chlorophyll & photosynthesize but don’t have cellulose or cell wall 43) Can take in food similar to protozoans 44) Have one or more flagella to move toward food or light videos
Diatoms: The golden algae 45) Unicellular photosynthesizing organisms 46) Make up a large part of phytoplankton in fresh and salt water ecosystems 47) Shells made of silica (sand) with two parts 48) Contain chlorophyll and carotenoid (golden-yellow pigment) 49) Oil in diatoms helps diatoms float on surface, Will be closer to sunlight
Dinoflagellates (513) 50) Have two (2) flagella located in grooves. 51) Cell spins slowly as flagella beat. 52) Makes up Phytoplankton in salt water. 53)Cause _________, that kill fish, and shellfish. (513)
Algae____________ Red Algae (514) 54) The next three phyla of algae has to do with their color: red, brown, and green algae. 55) Red algae 55) Red algae are seaweeds. The body of the seaweed is called a ___________. Seaweeds lack roots, stems, and leaves. 56) Red algae can survive deep water because light is absorbed in the green, violet and blue pigments. Red is the part of light spectrum that can penetrate deep water (below 100m)
Brown Algae (514) 57) Brown algae 57) Brown algae are found in cool ocean water. 58) Many have ____________ that keep bodies floating near the surface. 59)The largest of the brown algae are _________ 60) Kelp forest are complete ecosystems.
Kelp (multicellular seaweed) (514) 61) Looks like plants but is not; no roots, stems or leaves 62) Has hold fasts to attach to rock
Chapter 20 Brown Algae (Kelp)
Green Algae 63) Most live in fresh water 64) But live in a variety of water; salt water, snow, tree trunk, fur of animals. 65) Unicellular or multicellular. Live in a group of cells that live together in close association called a _________. Volvox
Green algae reproduction Plant like Protist 66) Reproduce sexually and asexually 67) Individual organism breaks into pieces and each piece forms a new organism. This type of reproduction is called ___________. 68) Life cycles that alternate between individuals that produce spores and individuals that produce gametes are called _____________ 69) Alternates between haploid and _________. Forms sex cells Forms body cells (516)
70) Colonial Green Algae: 71) multicellular 72) Spirogyra: forms threadlike long colonies called filaments Chapter 20-4 Plantlike Protist: Chapter 20 Red, Brown, & Green Algae Spirogyra – undergoing conjugation and showing filaments Internal structure
Alternation of generations Alternation of generations Chapter 20 Mature Cell + - Zygote Diploid Zoospores Meiosis Haploid Asexual Reproduction Sexual Reproduction An organism’s life cycle alternates between ___________ reproduction and ___________ reproduction
Reinforcement and Study Guide The characteristic common to all protists is that they are eukaryotic. 2.Unicellular protists that are major producers of oxygen in aquatic ecosystems are phytoplankton. 3.Unicellular and multicellular photosynthetic protists are algae. 4.Most green, red and brown algae are multicellular. 5.Photosynthetic pigments are used to classify algae. 6.Algae are classified into six phyla. 7. Phylum Euglenophyta 8.Contractile vacuole 9.Nucleus 10.Chloroplast 11.Flagellum 12.Eye spot 13.Pellicle 14.Mitochondria
Reinforcement and Study Guide When diatoms that have been reproducing sexually reach about on- fourth of their original size, they reproduce sexually. 16.Dinoflagellates are unicellular algae that all of the above; have two flagella, create red tides, have thick cellulose plates. 17.Red algae are a kind of seaweed having pigments that absorb green, violet, and blue light waves, which allows the algae to photosynthesize in limited light 18.The air bladders of green algae allows the algae to float to surface. 19.A green algae that forms colonies is Volvox. 20.Some algae have a life cycle that has a pattern called (20) alternation of generations. These algae alternate between a(n) (21) haploid form that is called the (22) gametophyte because it produces gametes, and a(n) (23) diploid form called the (24) sporophyte. When the haploid gametes fuse, they form a(n) (25) zygote form which the sporophyte develops. Certain cells in the sporophyte undergo (26) meiosis to form haploid (27) spores that develop into gametophytes.
Fungi Chapter 20
What is a fungus? Chapter 20 Characteristics of Fungi: 73) Are everywhere 74) Grow best in moist, warm environments 75)Have cell walls but not of ___________, like found in plants. Fungi have cell walls of ____________.
What is the structure of fungi? 76) Most are multicellular and have long threadlike filaments called _________ 77) Hyphae grow from __________. 78) As hyphae grow they form an network of filaments called a _______________.
hyphae 79) A germinating fungal spore produces hyphae that branch to for mycelium. (530) Hypha Mycelium Spore
How do fungi get food? 80) Fungi can not make their own food, they are 81) Food is digested ___________ the fungus’s cells and then food is absorbed by digestive ___________ 82 ) Enzymes break down large food molecules into small food molecules 83) Small food molecules move into the hyphae by Osmosis )
Reproduction in Fungi 84) Fungi undergo asexual reproduction by pieces of mycelium breaking off called: ______________ 85) Another asexual method in which a new individual pinches off from the parent is __________
Common Basidiomycotes Diversity is obvious Mushrooms, puffballs, stinkhorns, bird’s nests fungi, rust, smut, and bracket fungi.
Another Example of Mutualism: Mycorrhizae and Lichens 86) Mutualism: a symbiotic relationship that benefit both species 87) A fungus that has a symbiotic relationship: a plant and its roots is ______________ 88) Fine, threadlike hyphae grow around the plant’s roots without harming the plant. The hyphae maintain water around roots. The fungus receives organic nutrients from the plant.
89) A _________ is a symbiotic association between a fungus and _____________. 90) The fungus portion forms a dense web of _________, the algae grows inside the web. 91) The algae provides food for both organisms, the fungus protects the algae from changes in the environment. 92) Often first to colonize an area in __________ succession. Mutualism: Mycorrhizae and Lichens
Fungi page Worksheet 4.Many fungi are decomposers, which break down organic substances into raw materials that can be used by other organisms. 5.Fungi use extracellular digestion (outside) to obtain nutrients. 6.Hyphae release digestive enzymes that break down molecules in their food source. 7. Saprophytic are fungi are decomposers. 8.Parasitic fungi grow haustoria into host cells and absorb the cell’s nutrients. 9. Fungi reproduce asexually by fragmentation, budding, or producing spores. 10.In fragmentation, pieces of hyphae grow into new mycelia. 11.The process of a parent cell undergoing mitosis and producing a new individual that pinches off, matures, and separates from the parent is called budding.
Fungi page Worksheet 12. When environmental conditions are right, a spore may germinate and produce a threadlike hypha that will grow into a mycelium. 13.Some hyphae grow away from the mycelium to produce a spore-containing structure called a sporangium. 14.In most fungi, the structures that support sporangia are the only part of the fungus that can be seen. 15.Fungi may produce spores by mitosis or meiosis. 16.Many adaptations of fungi for survival involve spores. 17.Sporangia protects spores and keep them from drying out until they are released. 18.A single puffball may produce a cloud containing as many as 1 trillion spores. 19.Producing a large number of spores increase a species’ chances of survival. 20.Fungal spores can be dispersed by: water, wind, animals
Fungi page Worksheet 1.2__ Hyphae called rhizoids penetrate the food, anchor the mycelium, and absorb nutrients. 2.1__ An asexual spore germinates on a food source and hyphae begin to grow. 3.5__ Spores are released and another asexual cycle begins. 4.3__ Hyphae called stolons grow across the surface of the food source and form a mycelium. 5.4__ Special hyphae grow upward to form sporangia that are filled with asexual spores. Ascomycotes are also called (6) sac fungi because they produce sexual spores, called, (7) ascospores, in a saclike structure, called a(an) (8) ascus. During asexual reproduction, Ascomycotes produce spores called (9) conidia.
Fungi page Worksheet (10.) Conidiophores, which are elongated hyphae. Morels and truffles are (11) multicellular Ascomycotes that are edible. Yeasts are (12) unicellular Ascomycotes. (13) Yeasts are used to make beer, wine, and bread. They are also used in genetic research. A(n) (14) vaccine for the disease hepatitis B is produced from rapidly growing (15) yeast cell, which contain spliced human genes. 20.Penicillim is an example of a deuteromycotes. 21.A mycorrhiza is a mutualistic relationship between a fungus and a(n) plant. 22. Penicillim is an antibiotic produced by a deuteromycotes. 23.Plants that have mycorrhizae associated with their roots grow larger 24.Deuteromycotes make up a division of fungi that have no known sexual stage
Fungi page Worksheet (25) A lichen is a mutualistic relationship between a fungus and a(n) alga or cyanobacterium. (26) Lichens are pioneer species in all parts of the world. (27) Scientists think that ascomycotes and basiciomycotes evolved from a common ancestor.