Chapter 3 Protists and Fungi

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Chapter 3 Protists and Fungi

• Section 1 Protists

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Section 1 ProtistsObjectives

• After this lesson, you should be able to
• Describe the characteristics of animal like,
  funguslike, and plantlike protists

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Section 1 Protists Vocab

• 1. protozoanAn animal-like protist.

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• 2. pseudopodA false foot or temporary bulge
  of the cell membrane used for feeding and
  movement in some protozoans.

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• 3. contractile vacuoleThe cell structure that
  collects extra water from the cytoplasm and then
  expels it from the cell.

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• 4. ciliaThe hairlike projections on the outside
  of cells that move in a wavelike manner.

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• 5. symbiosisA close relationship between two
  organisms in which at least one of the organisms
  benefits.

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• 6. mutualismA type of symbiosis in which both
  partners benefit from living together.

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• sporeA tiny cell that is able to grow into a
  new organism.

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• 8. algaA plantlike protist.

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• 9. pigmentA chemical that produces color.

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Notes

• 1. Three Groups of Protists
• A
• B
• C

Protozoans with Pseudopods
Protozoans with Cilia
Protozoans with Flagella
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Sarcodines (a group of protozoans)

• 2. _________________________
• move and feed by forming
• ________________.

pseudopods
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Ciliates

• 3. A __________________________
• is an animal like protist that uses
• ____________________ to move.

cilia
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• 4. ______________________ are
• parasites that feed on cells and
• _________________ of their hosts.

Sporozoans
Body fluids
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• 5. Like fungi, funguslike protists are
  _______________________, have _____________, and
  use ____________________ to ____________________.
  Unlike fungus they are able to ___________________
  __.

heterotrophs
Cell walls
spores
reproduce
move
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• 6. Three types of Funguslike protists
• A.
• B.
• C.

Water Molds
Downy Mildews
Slime Molds
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seaweed

• 7. _________________________ is a
• common plant like protist found at the
• beach.

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• 8. The one characteristic that all algae
• share is that they are all
• _____________________________.

autotrophs
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• 9. Three uses of diatoms
• A.
• B.
• http//www.youtube.com/watch?vaNM3AfGPHfw
• C.

Polishing agents
once added to toothpaste
In swimming pool filters
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Carrageenan

• 10. ______________________, which is extracted
  from _______ algae is used in products such as
  ________________________.

red
Ice creams and hair conditioners
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• 11. Brown algae is used in products such
• as _____________ and
• __________________.

puddings
Salad dressings
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Chapter 3 Protists and Fungi

• Section 2 Algal Blooms

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Section 2 Algal BloomsObjectives

• After this lesson, you should be able to
• Describe how red tides occur and explain why they
  are dangerous
• Explain how the rapid growth of algae affects
  ponds in a lake.

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Section 2 Algal Blooms Vocab

• 1. algal bloomThe rapid growth of a population
  of algae.

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• 2. red tideAn algal bloom that occurs in salt
  water.

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• 3. eutrophicationThe buildup over time of
  nutrients in freshwater lakes and ponds that
  leads to an increase in the growth of algae.

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Notes
Dinoflagellates

• 1. ____________________ and
• __________________ are two types of
• algae that bloom in red tides.

diatoms
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• 2. Explain why red tides are dangerous.

The toxins that the algae produces may lead to
serious illness or death to the organisms that
consume the algae.
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• 3. Two natural and human activities that
  increase the rate of eutrophication are
• A.
• B.

Fertilizers spread on fields that can make their
way to nearby lakes and ponds
Poorly designed or aging septic tanks can leak
their contents in the soil
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Chapter 3 Protists and Fungi

• Section 3 Fungi

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Section 3 FungiObjectives

• After this lesson, you should be able to
• Name the characteristics that all fungi share
• Describe how fungi obtain food
• List the roles fungi play in the living world
• Describe the ways that fungi reproduce

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Section 3 Fungi Vocab

• 1. hyphaOne of many branching, threadlike tubes
  that make up the body of a fungus.

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• 2. fruiting bodyThe reproductive hypha of a
  fungus.

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• 3. buddingA form of asexual reproduction of
  yeast in which a new yeast cell grows out of the
  body of a parent.

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• 4. lichenThe combination of a fungus and either
  an alga or an autotrophic bacterium that live
  together in a mutualistic relationship.

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Notes

• 1. Three characteristics of fungi
• A.
• B.
• C.

They are eukaryotes
Use spores to reproduce
They are heterotrophs
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• 2. Explain how fungi obtain their food

First, the fungus grows hyphae into a food
source.
Then digestive chemicals ooze from the tips of
the hyphae into the food.
The digestive chemicals break down the food
into small substances that can be absorbed by
the hyphae
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• 3. The four groups of fungi

Threadlike Fungi
Sac Fungi
Club Fungi
Imperfect Fungi
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• 4. Three ways fungi help us
• A.
• B.
• C.

Environmental recycling - decomposers
Food . Example yeast cells use the sugar in the
dough for food and produce carbon dioxide
Fights some diseases . Example fungus
Penicillin produces a substance that kills the
bacteria growing near it.