Question

Put on goggles.
Cut a 3" (" = inch) piece from the tip of two different anacharis sprigs. Try to find sprigs with leaves that are about the same length and density per inch of stem. Gently flatten the leaves of each sprig from the end of the stem to the cut tip so it will slide easily into the test tube.
Fill the two clear cups or jars 3/4 full of water.
Fill a test tube full of water and carefully insert one of the anacharis pieces you cut, tip first, until the end of the stem is even with the bottom of the test tube.
Put your thumb over the end of the test tube to seal the top, tip the test tube upside down, and insert it upside down in one of the cups or jars before removing your thumb. The test tube should be full of water with only a very small air space at the top. You may have to try this a few times to get it right.
If using a disposable cup and lid, cut a small hole in the cup lid until it fits tightly over the test tube. Put the lid over the test tube and seal it on the cup. Then pull the test tube through the lid a little further until the test tube lip is about 1" above the bottom of the cup. The snug fitting cup lid will hold the test tube in this position. If using a jar, hold the test tube about 1" above the bottom of the jar, and secure it to the side of the jar in this position with a piece of tape.
Repeat steps 3-5 with the other piece of anacharis, test tube, and cup or jar.
Place one apparatus in a dark room or closet where it will not be disturbed. Place the other apparatus under a bright lamp. After an hour, observe the anacharis in both test tubes. Tiny bubbles of oxygen will be observed on the leaves of the anacharis under the bright light. You may even observe a steady stream of tiny oxygen bubbles rising from the anacharis. The rate the oxygen bubbles produced indicates the rate of photosynthesis. Now observe the anacharis in the dark room. There will be few or no oxygen bubbles visible. Where is photosynthesis occurring more rapidly?
After 24 hours, observe both plants again. Does one test tube have a larger air bubble at the end of the test tube? Which one? What does this indicate?

Explain your hypothesis and how you determined it.

Explain your observations. What did you observe in the plant in the dark? What did you observe in the plant in the light?

Explain how the data answered the essential question. Use the following questions to guide your thinking and your answer:

Did both sprigs of anacharis produce oxygen?
Which produced the most?
What is demonstrated as necessary by this experiment for photosynthesis to occur?
What factor affected the rate that photosynthesis occurred?

can anyone give me enough answers to get around this?

Answer 1

Answer:

both springs of energy produce oxygen the first spring produces the most oxygen yes hair experiment is photosynthesis occur where the plant make food by the whole process in the presence of sunlight water carbon dioxide the factor was affected to the photosynthesis is is hyper tortoise