""For my monocot I choose lilies, And for my dicot I choose...

""For my monocot I choose lilies, And for my dicot I choose daisies.""

 

 

Exercise 1 Structural Comparison of Monocots and Dicots

 

In this exercise, you will describe characteristics of angiosperms and compare and contrast the structures of a monocot plant and a dicot plant.

 

1. In Data Table 1, describe each plant structure. Include any pertinent notes on the function and/or purpose of the structure.
2. Record observations of similarities and differences between the flower of the monocot and dicot plants in Data Table 3.

Data table 1 as a picture:

Image transcription text

Data Table 1: Overview of Plant Structures Structure Description Flower Petiole Leaf Node Internode Stem Roots

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Data table 3 as a picture:

Image transcription text

Data Table 3: External Plant Morphology Structure Comparison Flower Petiole Leaf Node Internode Stem Roots

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Exercise 1 - Questions

 

1. What characteristics are unique to angiosperms, separating them from other plant groups?

 

2. What do the terms "monocot" and "dicot" mean? How do these names differentiate the two types of plants?

 

3. Describe three differences between monocot and dicot plants.

 

Exercise 2 Reproduction in Angiosperms

 

In this exercise, you will identify and describe sexual reproduction in angiosperms and observe the reproductive structures. You will label and compare the parts of the flowers of a monocot and dicot.

 

1. Describe the structure, function, and/or purpose of each flower structure in Data Table 4.

Data table 4 as a picture:

Image transcription text

Data Table 4: Flower Structures and their Functions Structure Description Pedicel Sepal Petal Stamen Anther Carpel Stigma Ovary

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Exercise 2 - Questions

 

1. Describe the general steps of sexual reproduction in flowering plants.

 

2. Describe two ways in which fruits benefit seeds.

 

3. How might a decline in butterfly populations affect abundance of angiosperms?

 

4. Describe some physical differences between the flowers of your selected monocot and dicot.

 

Exercise 3 Roots and Shoots

 

In this exercise, you will describe the function of plant structures found in vascular plants. You will observe prepared microscopic images of monocot and dicot roots and stems.

Procedure

 

1. In Data Table 5, describe the function and/or purpose of each plant structure.
2. View the slide photograph of the monocot root in Photo 19.
3. Label each of the structures listed in Data Table 5.
4. Repeat steps 2 - 3 for the slide photographs in Photo 20 - 22.

Data table 5 as a picture:

Image transcription text

Data Table 5: Internal Plant Morphology Structure Description Epidermis Cortex Pericycle Stele Xylem Phloem

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Photo 19 as a picture:

Photo 20 as a picture:

Photo 21 as a picture:

Photo 22 as a picture:

 

 

Exercise 3 - Questions

 

1. What are the notable differences between the monocot and dicot root cross sections?

 

2. Describe three functions of roots.

 

Exercise 4 Leaves

 

In this exercise, you will examine the leaves of your monocot and dicot plants. You will describe structures of leaves and view a prepared slide image of a leaf cross section.

Procedure

 

1. In Data Table 6, describe the structure, function and/or purpose of each leaf structure.
2. Label each of the structures listed in Data Table 6 on the slide image in Photo 23.

Note: Stomata may or may not be visible on the slide. Do not label stomata if you are unable to locate them

 

Data table 6 as a picture:

Image transcription text

Data Table 6: Leaf Structures and their Functions Structure Description Cuticle Epidermis Collenchyma Palisade mesophyll Spongy mesophyll Vein Midvein Vascular bundle Bundle sheath cell Stoma

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Photo 23 as a picture:

Image transcription text

Photo 23: Leaf Cross Section +

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Exercise 4 - Questions

 

1. What are typical differences between venation in a monocot and a dicot?

 

2. Why might leaves have thick cuticle layers?