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Plants
and animal cells
Monacia
Williams, Contributor
Welcome
to another lesson in our series. Congratulations
to all of you who have been following
the lessons and carrying out the activities.
I hope you have been finding them
useful.
Last
week, we spoke about developing drawing
skills. These are skills that you
will need as you continue your journey
in science. I will now give you a
checklist of questions that you can
use to assess your drawings before
you hand them in to be marked for
your school-based assessment.
Checklist
to assess drawing
- Is
my drawing as large as possible,
within the available space?
- Did
I leave enough space for labels?
- Does
my drawing have clean, continuous
lines of even thickness and no shading?
- Are
my label lines horizontal, touching
only the correct features and do
not carry arrowheads or dots?
- Are
my labels written neatly against
the label lines, accurate (check
a textbook) and annotated?
- Does
my drawing have a title?
- Does
the title include the name of the
organism, the name of the structure
and the magnification?
- Have
I erased any unnecessary marks or
words?
If
your answer to each question is 'yes',
you will be sure to get a good grade
for the drawing. Use the checklist
and be sure to enjoy the top marks
that you will receive. By the way,
everything must be done in pencil!
After
reading about plant and animal cells,
and doing the drawings, you should
have a good concept of what the cell
is like, including the features of
these cells. But, guess what? Not
all cells are alike. As the organism
becomes complex in structure, the
cells that make them up appear different
- they become differentiated or undergo
specialisation to suit the function
that they will perform in the organism.
Animal
cells differentiate into:
- Muscle
cells
- Nerve
cells
- Blood
cells
- Connective
tissue cells
Plant
cells differentiate into:
- Palisade
mesophyll cells
- Guard
cells
- Phloem
vessel cells
- Xylem
vessel cells
As
you continue, you will meet these
cells again. For now, it is enough
for you to know that they exist and
be able to identify them whenever
you see them. See you next week.
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Opposition
Leader Portia Simpson Miller
(second right) and Christopher
Issa, president of the Rotary
Club of Kingston, greet members
of the Norman Manley High School
cadet unit at the club's weekly
luncheon at The Jamaica Pegasus
hotel in New Kingston, recently.
- Rudolph Brown/Chief Photographer
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Monacia
Williams teaches at Glenmuir
High School.
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