Name:
Date:
Use the microscope to look at your slide of Paramecium/Euglena (Circle one)
In the space below, draw the cell and all visible internal structures. Indicate approximate
cell size and try to label all visible internal structures (refer to Figure 22.4 or 22.7).
Should have either a Euglena or Paramecium cell with some indication of scale and
labeling of some parts/organelles (I required cell nucleus only, as students had not had
intro to organelles in detail).
Page 1 (drawing): 3 Points: Circled slide drawn? (1 point, either did or did not,
assume correct as was written on slide). Drawing (2 Points). 3 points for drawing
with nucleus labeled and scale indicated, 2 for partial credit (missing label or scale),
1 for logical attempt made, 0 for not attempted or completely sloppy and unlabeled.
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Name:
Date:
Questions: Questions 1-4: 3 points each, 2 for partial credit, 1 for logical attempt
made, 0 for not attempted or completely off base.
1. What distinct monophyletic lineage of Protista is your organism? (consult
Figure 22.2). Looking at Figure 22.2, what other Kingdom (beside
Protista) do you think it is most closely related to, and why?
Lineage: see 22.2
Part 2, no correct answer so long as the “why” seems reasonable and
illustrates grasp of materials.
For example:
GOOD - Euglena most closely related to prokaryotes because of genetic
evidence leading to Figure 22.2
PARTIAL CREDIT – Euglena most closely related to plants because of
chloroplasts. (Good reasoning but not consistent with the known science)
2. Define autotroph, heterotroph, and mixotroph. You may use the glossary
but write in your own words. Hint: mixotrophs area “mixture” of the other
two.
Autotroph – creates own energy source (from sun or some other chemical
reaction)
Heterotroph – consumes energy from another living source (from autotroph
or another heterotroph)
Mixotroph – Obtains energy from both autotrophy and heterotrophy
3. Looking at the organelles you drew and labeled, do you conclude that
your organism is an autotroph, heterotroph, or mixotroph? What do you
base this conclusion on?
Paramecium – heterotroph. No chloroplasts. Oral groove.
Euglena – autotroph. Chloroplasts. If say mixotroph must defend why.
4. Where would this organism likely be found: In the water (fresh, marine,
both), on land, in the air, or inside a host?
Paramecium – water (fresh)
Euglena – water (fresh and marine)
2
Name:
Date:
Homework:
1. Imagine you find a new species of single celled organism. It is eukaryotic,
so naturally, you want to classify it as a member of Kingdom Protista.
Based on the characteristics described below, classify this new organism
to the proper monophyletic lineage (listed in Figure 22.2)
Characteristics:
• Chloroplasts
• Well developed mitochondria
• Other organelles present
• Either parasitic or symbiotic (it was found inside a shrimp gut)
• 2 flagella – one longitudinal (running up and down cell) and one
transverse (running from one side of cell to another
Dinoflagellate
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Name:
Date:
2. Given the information we now have, in particular genetic information
(discussed in Ch 22): Imagine you had to develop a new taxonomic
structure today. Would you still group all the subgroups (listed in Figure
22.2) into a single Kingdom? If not, how would you group them? There is
no right or wrong answer, but provide justification for your answer based
on some combination of:
a. morphology
b. how the cells obtain food (autotrophic = photosynthesis,
heterotrophic = eat others, mixotrophic = both)
c. unicellular, multicellular, or both
d. motile or sessile, form of motility (flagella, cilia, pseudopods,
other/none)
e. life/reproductive cycle
This is a free for all. Full credit for logical justification of all decisions made and correct
facts about a.-e.
REGARDING THE TOTAL GRADING:
Page 1 (drawing): 3 Points: Circled slide drawn? (1 point, either did or did not,
assume correct as was written on slide). Drawing (2 Points). 3 points for drawing
with nucleus labeled and scale indicated, 2 for partial credit (missing label or scale),
1 for logical attempt made, 0 for not attempted or completely sloppy and unlabeled.
Questions 1-4: 3 points each, 2 for partial credit, 1 for logical attempt made, 0 for
not attempted or completely off base.
HW1: 1 point (either right or wrong)
HW2: 5 points, one point awarded for each logical justification made with correct
facts up to 5 total. Alternatively if they successfully create a good argument and
classification with less than 5 total justifications, then still 5 points awarded.
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