Module 7 Lab 12 – Plant Vascular System .â€¦
The purpose of this lab is to study the vascular system of the plant.
Plants have a simple vascular system. The xylem is composed of shafts that carry nutrients
and water up the plant from the roots to the leaves. The phloem carries nutrients down the
plant. In this lab we will be identifying the xylem of a celery stalk.
Celery stalk with leaves
Red food coloring
Blue food coloring
Using a sharp knife, cut a celery stalk with leaves half way up the stem. This should leave the
leaves and the top of the stalk as one. Fill two beakers with water and into one beaker add
several drops of red food coloring, and into another beaker add several drops of blue food
coloring. Place the celery stalk so that half of the stalk is in the red food coloring solution, and
the other half is in the blue food coloring solution. Leave the celery overnight. In the morning
record what you observe. Cut the stalk above where it was split in half and observe the inside
of the stalk. Record your observations.
Were you able to see the xylem clearly?
Do the xylem criss-cross across the stalk, or do they travel parallel to each other?
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I cut the celery stalk with leaves halfway up the stem and the I fill two beakers with water and
into one beaker I added
several drops of red food coloring, and into another beaker I added several drops of blue food
coloring. I Placed the celery stalk half of the stalk is in the red food coloring solution, and
the other half is in the blue food coloring solution. Leave the celery until overnight
When I left celery overnight, the color of the celery in red changed as well as the celery in the
I noticed that celery is not affected quickly when we put it in food coloring. I think we should
put celery in red or blue food coloring for several days to see if the celery color will absorb the
color more and more.
Module 7 Lab 13 – Seed Germination
The purpose of this lab is to study the morphology of seed germination.
Dicot and monocot plants follow a specific pattern of germination. Seeds are actually living
entities that change upon addition of water. It is possible to kill seeds by heating them or
irradiating them. In this experiment we will be studying the morphology of seed germination and
also studying the effect of radiation on seed germination.
Lima bean seeds
3 glass jars
Take 3 glass jars and stuff them with newspapers. Wet the newspapers thoroughly by adding
water to them. Take 10 lima bean seeds and push them down one jar on the sides so that the
lima beans are in between the glass and the paper. Place them so that you can see the beans.
Take 10 more lima beans and repeat in another jar. Place one jar in a windowsill and another
jar in a completely dark place. Observe the lima beans daily until they germinate. Record all
Take 10 lima beans and put them in the microwave on high for 30 seconds. Take these 10 lima
beans and push them down one side of a glass jar. Take 10 lima beans and put them on the
other side of the same jar. Use tape to identify the irradiated lima beans. Place the jar in a
window and observe the jar for several days. Record your results.
What effect did light have upon the germination of the seeds?
What effect did radiation have upon the germination of the seeds?
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