Lab #12 – The Celery Experiment

Lab #12 – The Celery Experiment

Problem

How does a plant get water from its roots to its leaves?

Hypothesis 

Materials

Celery

Celery seeds

Food coloring

Water

Plastic cup

Scissors

Ruler

Hand lens

 Procedure

1.          Make observations of your celery seeds in the Results.

2.          Make observations of your celery stalk in the Results.

3.          Cut about 2.5 cm off the bottom of the celery stalk and make observations on the celery stalk’s cross section.

4.          Fill up a plastic cup with 250 ml of water and add two drops of food coloring.  Put your celery stalk, cross section down and leaves up, into the cup of colored water. 

5.          Make observations on your celery stalk experiment.  Make sure to include color and other details such as height, number of leaves, width of cross section, etc.

  

Results

Observations on the celery seed	Observations on the celery seed 10X

Observations on the celery stalk	Observations on the celery stalk 10X

Observations on the celery stalk’s cross section	Observations on the celery stalk’s cross section 10X

Observations on the celery stalk in colored water	Observations on the celery stalk in colored water 10X

Analysis

1) What happened to your celery stalk overnight?

2) How do you know that the water reached the top of the plant (celery stalk)?

3) Look for small circles at the bottom of the stalk that are the color of the food coloring you used. (These circles are xylem, the tubes that carry water up the plant.) Draw pictures and make observations about the xylem in your celery.

  

Observations on the celery stalk in colored water

Conclusion

Prospect Park Zoo Science Article

Prospect Park Zoo Science Article

At the zoo, you will see placards with information about the various organisms in their habitats.  You will write a science article which will include the following information: kingdom, common name, scientific name, habitat, and how it acquires its needs: food, water, shelter.  In regards to food, what kind of consumer is it? i.e. herbivore, carnivore, omnivore, decomposer, etc.  What kinds of animals does it prey upon?  What kinds of animals are its’ predators? 
 Follow these simple steps to make an A!
1) Summarize the information placard in 5-7 sentences
2) How does this affect us?
3) Why is this important?
4) How is this science related?
5) Pick a science word and write its definition.  Use a dictionary or www.dictionary.com
6) Draw a picture!
(minimum length: one full page written, one full page picture)

Lab #11 – The Cell and its Organelles

Lab #11 – The Cell and its Organelles

Problem

How do plant cells differ from animal cells?

Hypothesis

Materials

3 zip-loc bags

Gelatine

Water

Frozen vegetables

  

Procedure 

Animal Cell

1. Pour the gelatine mixture (cytoplasm) into the plastic bag. 
2. Add the cauliflower (nucleus) and mixed vegetables (organelles), but not the green beans!
3. Draw a picture and label your cell in your results.

Plant Cell

1. Pour the gelatine mixture (cytoplasm) into the plastic bag.
2. Add the cauliflower (nucleus) and mixed vegetables (organelles), including the green beans (chloroplasts).
3. Put the plastic bag cell into another plastic bag (cell wall).
4. Draw a picture and label your cell in your results.

Results

Animal Cell	Plant Cell

Analysis

1. Compare/Contrast your plant and animal cells.

2. Predict what would happen to a plant cell if it were to lose its chloroplasts.

3. Explain the importance of the nucleus in both cells.

4.       4. On your gel cells, what is representing the cell membrane?      How is the cell membrane like your skin?

_____________________________________________

  

Conclusion

  

MOSL Q/A Rubric

1.  Evaluate others’ work – There is a mistake!  What is it?

a.  Limitations

b.  Use data and evidence from the experiment

2.  Formulate a testable question

a.  Independent Variable and Dependent Variable

b.  Is your question testable?

3.  Formulate a Hypothesis

a.  What’s your rationale?

b.  Include the I.V. and D.V.

c.   Details!

4.  Design a Procedure

a.  Must test the hypothesis, I.V. – D.V.

b.  Orderly sequence

c.   Multiple trials

5.  Supports Claim

a.  Is your procedure > Q’s procedure

b.  How/Why was the variable isolated and controlled?

Chapter 8 HW

1. C8S1: reading check, blue Q/A, vocabulary, self check # 1-4 and copy the Summary

2. Chapter 8 Section 3 

Vocabulary, blue question, reading check, self check # 2-5