Station 1. View the picture of Volvox on the next slide. Draw a picture of what you see.

Transcription

1 Volvox Station 1 View the picture of Volvox on the next slide Draw a picture of what you see. Why do you think Volvox is green? How do you think Volvox gets its energy? Use the reading on Slide 3 to answer the rest of the questions on your sheet.

2 Volvox

3 Volvox Reading Volvox are one-celled algae that live together in a colony. The colony is a hollow ball with 500 to 20,000 individual cells. Look for rolling green balls on the slide. When you see a volvox colony, look for the structures shown in the diagram. Movement: Each volvox cell has two flagella. The flagella beat together to roll the ball through the water. Feeding: Volvox cells have chlorophyll and make their own food by photosynthesis. Reproduction: Daughter colonies are small, dark green balls inside the volvox colony. When the daughter colonies mature, the parent ball bursts open and releases the daughter colonies. Size 350 to 500 µm (Two or three volvox cells would fit in 1 mm.)

4 Stentor Station 2 Draw a picture of what you see on the next slide. Label the mouth of the Stentor on your picture. Cilia are short hair-like projections. What do you think the Stentor uses its cilia for? (Hint: Pay attention to where the cilia are located)

5 Stentor Under the Microscope

6 Stentor Diagram

7 Amoeba Station 3 What is a pseudopod? (pg. 606) What are the two purposes of a pseudopod? (See Fig on pg. 606) Draw the amoeba you see on the next page and label at least one pseudopod.

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9 Spirostomum Station 4 Draw what you see on the next slide Read the paragraph to answer the question in your packet.

10 Spirostomum

11 Spirostomum Reading Some of the largest ciliates belong to the genus Spirostomum, some species large enough to see with the naked eye. These organisms hold the record for the fastest body contractions of any living cell, contracting its length to 25% of its normal size in 6-8 milliseconds. Spirostomum feeds on bacteria and during cold weather forms large clusters of organisms that hibernate together. Taken from:

12 Station 5 pg What is mutualistic symbiosis? Give an example of a mutualistic relationship between a protist and another organism. What are 3 diseases that are caused by protists?

13 Station 6 Ecological Roles of Protists On page 611 the ecological roles of protists are described. List and describe the 4 ecological roles of protists. At least one sentence about each role!

14 Station 7 Read about Toxic Blooms on pg. DOL 13 What type of protists cause toxic blooms or red tide? How are red tides harmful to the food web? What effects can occur from eating shellfish from red tide water?

15 Euglena Station 8 - Draw the Euglena you see on the next slide and record 3 specific observations about what you see. - What are flagella? (pg 607). How do Euglena use their flagella? - Answer the rest of the questions in your packet.

16 Euglena Under the Microscope

17 Euglena Diagram

18 Paramecium Station 9 Cilia are short hair-like projections (pg. 607). What do Paramecium use their cilia for? Observe and draw the Paramecium on the next slide. Make 3 specific observations. How do Paramecium move?

19 Paramecium Under the Microscope

20 Paramecium Diagram

21 Station 10 Spirogyra (green algae) - Draw what you see on the next slide

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23 Diatoms Station 11 - Draw 3 types of the diatoms that you see on the next page

24 Diatoms