Sit with Voices Off Have out your Notebook Pencils Archaea Conclusion Answer on your whiteboard What are the 3 main parts of a seed What is a seeds energy source How does a plant receive water ID: 385963
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DO NOW:
Sit with Voices Off
Have out your:NotebookPencil(s)Archaea Conclusion
Answer on your whiteboard:What are the 3 main parts of a seed?What is a seed’s energy source?How does a plant receive water?What are the 3 domains?What is the difference between Nonliving and Dead?What cell structure in a Plant Cell converts energy?Slide2
Investigation 4 Check
You will have
30 minutes to complete the quiz. There are 12 questions. Read each question carefully and be sure to answer what the question is asking. When finished take out your binder. Look through all returned graded work. In your notebook, write down any questions you still may have (on any topic)Then take out your silent reading book and readSlide3
Questions? Confusion?Slide4
Next Clean Page: Write
Title: What Happened to the Water?
Update: Table of Contents with page number & DateFocus Question: What happened to the water?Hypothesis:Slide5
What happened to the water?
Celery: an example of a multicellular plant
Single-celled organisms get the water they need directly from the environment.Multi-cellular organisms need another method. Roots are the way water enters the plant. Slide6
Table Partners
Jot down your ideas in your notebooks
Discuss with your table partner the question of what happened to the water. One partner write down your shared ideas.Be ready to share with the class.3 Minutes!Slide7
Lab
Materials:
Vials filled with water and celery stalks with the number of leaves ranging from 0 to many Vials of water with no celeryData Collected: (What do you notice?)Day 0 (set up)Day 1 (final)
ChangeWater in celery vial (volume)20 mL3mL17 mL less(-17mL)Water in Control (volume)20 mL19mL1 mL less(-1mL)
Celery
Mass
42.6g
42.8g
0.2 g moreSlide8
Results
A significant amount of water disappeared from the vials in which celery was placed (except for the vials containing celery stalks with no leaves)
The volume of water that evaporated from the control (evaporation) vial was not significantThe increase in mass of the celery was small compared to the volume of water missing from the vialWhat happened to the water? How can you explain the results?Slide9
The more leaves a stalk of celery had, the more water it lost.
The celery stalk with no leaves lost very little water.
What do you think would happen if we added red dye to the water?ResultsSlide10
What do you observe?Slide11
ImagesSlide12
Results- Notes
The stalks and leaves have a red cast to them
The surfaces of the leaves are redThe veins in the leaves are redSlide13
Discussion
What does this suggest about the movement of water in the celery
?Does this provide any clues about where the missing water might have gone?Slide14
Water- Transport System
The
tubelike structures that carry water from the roots to throughout the plant are called the xylem.Xylem is a tissue made of the cell walls of specialized long, thin cells that have died.Slide15
When the cells die, they leave behind thick cell
walls that are stuck end to end to form the water transportation system of many land plants.
Smaller veins connect to the xylem. Slide16
Celery Images 1-4
If xylem is the tissue that carries water throughout the plant, and the water is not collecting in the plant, how does the water get out of the plant?Slide17
Stomata
Trasdescantia
Draw your observations on the response sheetSlide18
Notes
The structures that look like little mouths on the leaves are openings called
stomata (singular, stoma)Stomata are pores or holes in the leaves that can open and close.The banana-shaped cells on either side of the stomata are called guard cells. Slide19
Discussion
Are stomata made out of cells? What are they?
Swedish Ivy ImagesSlide20
When there is plenty of water available from the environment, the guard cells fill with water and the pressure caused them to bend out, opening the stoma.
When there is not a lot of water in the plant, the guard cells lose water and become limp, closing up to conserve water.Slide21
Homework Due Tomorrow:
What Happened to the Water? Worksheet
Answer the two questions in complete sentences. Use your notes to define the vocabulary words. Slide22
If time….
Observe Fungi on BreadReview past
HW assignments