What is the primary objective of the Hydrilla experiment?

Photosynthesis and Gas Evolution

Interactive Video
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Biology
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7th - 8th Grade
•
Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To determine if the gas released during photosynthesis is oxygen.
To measure the growth rate of Hydrilla plants.
To observe the color change in Hydrilla leaves.
To test the effect of fertilizers on Hydrilla.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a material required for the Hydrilla experiment?
Beaker
Funnel
Test tube
Thermometer
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in setting up the Hydrilla experiment?
Place the Hydrilla plant in a funnel.
Tag the setups as A and B.
Fill the beaker with water.
Invert a test tube over the funnel.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long should the setups be left undisturbed during the experiment?
30 minutes
1 hour
2 hours
4 hours
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is observed in the test tube of setup A placed in sunlight?
No gas formation
Water level decreases
Water level rises
Gas formation at the top
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the burning matchstick in the test tube of setup A?
It keeps burning.
It breaks into pieces.
It extinguishes immediately.
It changes color.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which gas is primarily responsible for the matchstick continuing to burn in setup A?
Oxygen
Nitrogen
Carbon dioxide
Hydrogen
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