Ace Your Plant Science Project by Robert Gardner

Author:Robert Gardner [, ]
Language: eng
Format: epub
ISBN: 978-1-4645-0494-5
Publisher: Enslow Publishers, Inc.
Published: 2010-07-22T16:00:00+00:00

FIGURE 12: Celery stalks can be used to detect the upward movement of water in the stem of a plant.

Once you have detected the presence of food coloring in the veins of the experimental stalk, remove the stalk from the water and place it on a cutting board. Have an adult use the sharp knife to cut the stalk about 3 cm (1.25 in) above its lower end. Can you see where the red food coloring has moved up the stem?

Continue to cut the stem at 3-cm intervals. Can you follow the path of the colored water up the stem? Continue to cut all the way to the leaves. Can you find evidence showing that the colored water entered the short stems (petioles) leading to the leaves? Using a magnifying lens, can you find evidence that the colored water entered the veins of the leaves?

You can apply what you have learned by making a “Fourth of July” bouquet. To make the bouquet, find some white, long-stemmed flowers commonly known as Queen Anne’s lace. Pick six of them, cut the lower ends of their stems under water, and place two of them in a glass containing water to which red food coloring has been added. Place two more in a glass containing water to which blue food coloring has been added. Place the remaining two in a glass of plain water. Wait a few hours and you will have your “Fourth of July” bouquet.

Can you make a Queen Anne’s lace flower that has red, white, and blue colors all in the same blossom? Can you make a Queen Anne’s bouquet that would be appropriate for St. Patrick’s Day?

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.