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Secrestia stamen hair A note about this picture and ‘scopes. See the little bits of dust in the image? Those are probably a result of an unfocused condenser.

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Presentation on theme: "Secrestia stamen hair A note about this picture and ‘scopes. See the little bits of dust in the image? Those are probably a result of an unfocused condenser."— Presentation transcript:

1 Secrestia stamen hair A note about this picture and ‘scopes. See the little bits of dust in the image? Those are probably a result of an unfocused condenser. A common problem. Also notice the strands of cytoplasm and the large nucleus, as well as the enormous central vacuole.

2 Elodea. What is this structure? What sugar is it likely composed of? What are the small green structures?

3 Tomato fruit pulp. What structures contain the red pigment? Describe the relationship of these structures to chloroplasts. What cell structure is likely responsible for the large clear spaces within cells?

4 Potato pulp What is this crystal? What cell structure likely formed it? What important functional role do these cellular structures play in root growth?

5 What kind of cell wall is most visible here? When was it deposited? Why is it red? Is this condenser properly focused? How can you tell?

6 Which of these cell walls is likely the most hydrophobic? Is 1 a primary or secondary cell wall? What structure would you expect to find between two of these cell walls? What substance is it made up of?

7 Pinus, t.s. 100x What kind of pits are evident in this image? What is the dark structure in their center? Are you able to see both members of individual pit pairs in this image?

8 What hole can you see here? Is it a hole in the primary or secondary cell wall? What is the special name for this portion of cell wall?

9 Elodea. What is this structure? Cell Wall What sugar is it likely composed of? Cellulose (glucose subunits) What are the small green structures? Chloroplasts

10 Tomato fruit pulp. What structures contain the red pigment? Chromoplasts Describe the relationship of these structures to chloroplasts. :: What cell structure likely responsible for the large clear spaces within cells? Vacuoles

11 Potato pulp What is this crystal? Starch crystal What cell structure likely formed it? Amyloplast What important functional role do these cellular structures play in root growth? Gravity sensing

12 What kind of cell wall is most visible here? When was it deposited? Secondary cell wall Why is it red? Lignin stains red Is this condenser properly focused? Not likely How can you tell? Blue ring of light.

13 Which of these cell walls is likely the most hydrophobic? Number 2. Is 2 a primary or secondary cell wall? Secondary What structure would you expect to find between two of these cell walls? Middle lamella What substance is it made up of? Pectin

14 Pinus, t.s. 100x What kind of pits are evident in this image? Bordered pits What is the dark structure in their center? Torus Are you able to see both members of individual pit pairs in this image? Yes

15 What hole can you see here? Pit aperature. Is it a hole in the primary or secondary cell wall? Secondary What is the special name for this portion of cell wall? Border


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