Performance Task #2
Part I: POTATO TUBERS
This experiment can be found in your Science book on pages 161-163.
GUIDE:
1. Materials Needed:
- Cup/ Any plastic container
- 4 toothpicks
- A potato
2. Procedures:
a) Pour water into the beaker until the water level almost reaches the brim.
b) Put four toothpicks around the potato. The toothpicks should be equally spaced.
This will serve as a holder to keep the potato in place.
c) Put the potato with toothpicks in the beaker (look at your Science book on
page 161 for reference), with only half of the potato submerged in water.
d) Place the setup in an area with sunlight and proper ventilation.
e) Check your setup daily for one week. Refill the water in the beaker if the water
level goes below the potato.
f) Do not forget to take pictures for documentation!
g) If there are signs of molds such as a change in smell and decay, discard the
potato and REPEAT THE EXPERIMENT.
3. Answer the guide questions and complete the table below:
Data Sheet. What I observe from this experiment.
Day
Observations
1
2
3
4
5
6
7
Pictures
Guide Questions:
a) If you leave the potato for more than seven days, what may be the changes
that you will observe in the potato?
b) What does the experiment show?
c) What type of reproduction does the potato exhibit? What other organisms have
the same type of reproduction? Name at least five (5).
PART II: HARVEST TIME!
Time to harvest everything you learned in this lesson by filling the chart with correct details
and answering the guide questions below.
ASEXUAL REPRODUCTION
Advantages
Characteristics
a)
b)
c)
d)
e)
a)
b)
c)
d)
e)
Disadvantages
a)
b)
c)
d)
e)
Guide Questions:
a) What would happen if your pets reproduce asexually?
b) Is it important to learn how to artificially propagate plants? Explain your answer.
c) What would be the consequence if the microorganisms failed to reproduce?
RUBRICS
POINTS
PART I: Potato Tubers
✓ The Data Sheet was complete with
detailed observations accompanied
25 points
by documentation.
✓ Comprehensive answers to the guide
questions.
Part II: Harvest time!
✓ The chart was complete with
accurate use of words and
20 points
meaningful answers.
✓ Comprehensive answers to the guide
questions.
Punctuality
✓ A week late from the date of
submission = -3
5 points
✓ late submission for more than 2 weeks
= -5
HIGHEST POSSIBLE SCORE: 50 POINTS
Deadline of submission: January 27, 2023, 11:59 pm