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SNC 2D
Name: ______________________
Unit: Tissues
Microviewer Activity
Date: ______________________
Three of the Four Plant Organs: Leaves, Stems, and Roots
Instructions:
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You will be shown the correct use of a microviewer and the mechanics of completing a biological diagram. Be sure to use a pencil and a
ruler to construct the required diagrams on white, unlined paper.
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It is imperative that you treat the equipment with respect.
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Although you may choose to work with a friend, each of you must produce your own work. Your textbook can be used as a resource.
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This assignment will be marked.
A Plant Organ: The Leaf
Use microviewer set 79, “The Leaf of a Flowering Plant” for the following questions.
Slide 2 – Working Layers of the Leaf.
The leaf is a plant organ. As with all plant organs, it is made up of dermal tissue, ground tissue and vascular tissue.
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Examine slide 2. Create a proper biological drawing of what you see. Label the diagram “Plant Organ: The Leaf” .
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Label the following specialized cells on your diagram: upper epidermal cells, palisade mesophyll cells and spongy mesophyll cells. Label
an air space, too. Use Figure 2.7 pg. 60 and the microviewer notes to help.
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Each of the labelled specialized cells on your diagram belongs to one of the 3 types of plant tissues. Write “D” (in brackets) beside the
names of specialized cells belonging to dermal tissue. Write “G” beside specialized cells belonging to ground tissue. Write “V” beside the
names of specialized cells belonging to vascular tissue.`[Hint: Use Figure 2.3 pg. 58 and Figure 2.7 pg. 60 to help with this task if need be.]
Slide 5 – Epidermis – Surface View
Answer these questions under the title above in complete sentences. (No diagrams to do here! You may wish to refer to Fig. 2.8, pg. 61.))
a) What is a stoma? (plural is stomata)
b) What is the function of stomata?
c) What are guard cells and what is their function?
d) How many stomata can you see on this slide? _____________
Slide 6 – Stoma
Examine the picture on slide 6. Create a proper biological drawing of what you see. Give it a title and label the following parts on your diagram:
stoma, guard cell, epidermal cell, cell wall, and cytoplasm. (See Figure 2.8 pg. 61 to help.)
A Plant Organ: The Stem
Use microviewer set 78, “The Stem of a Flowering Plant” for the following questions.
Slide 2 – Fibrovascular Bundle
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Examine the picture on slide 2.
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Create a proper biological drawing of what you see. Give it a title and label the following parts on your diagram: vascular bundle, xylem,
and phloem. (Refer to Fig. 2.10 pg. 64.)
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Beside the labels for xylem and phloem, write “specialized cells” in brackets. Beside the label vascular bundle write “vascular tissue” in
brackets.
Slide 3 – Red Clover Stem
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Examine the picture on slide 3.
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Create a proper biological drawing of what you see. Give it a title and label the following specialized cells on your diagram: epidermis,
pith, vascular bundle, xylem, and phloem. (Refer to Fig. 2.10 pg. 64.)
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Each of these specialized cells you’ve labelled belongs to one of the 3 types of plant tissues. Write “D” (in brackets) beside the names of
specialized cells belonging to dermal tissue. Write “G” beside specialized cells belonging to ground tissue. Write “V” beside the names of
specialized cells belonging to vascular tissue.`(Refer to Fig. 2.3 pg. 58.)
A Plant Organ: The Root
Use microviewer set 77, “The Root of a Flowering Plant” for the following questions.
Slide 1

Examine the picture on slide 1.
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Create a proper biological drawing of what you see. Give it a title and label the following specialized cells on your diagram: epidermis,
cortex, xylem, and phloem. (Refer to Fig 2.12 pg. 65

Each of the specialized cells above belongs to one of the 3 types of plant tissues. Write “D” (in brackets) beside the names of specialized
cells belonging to dermal tissue. Write “G” beside specialized cells belonging to ground tissue. Write “V” beside the names of specialized
cells belonging to vascular tissue.`(Refer to Fig. 2.3 pg. 58.)
Marking Scheme
/34A
Your name is on the work
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Each diagram has a proper underlined title
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A pencil and a ruler are used throughout
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All 5 diagrams are present
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Leaf Slide 2
Slide 6
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Stem Slide 2
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Slide 3
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Root Slide 1
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Answers for Leaf slide 5 are complete and in full sentences
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