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Lab 3: Plants & Histology
Lab 3: Plants & Histology Facts
21
Biology
Undergraduate 2
10/08/2012

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Cards

Term
Name the two main purposes of venation (having veins).
Definition
Venation provides structural support through lignin-fortified xylem and transport of water and nutrients.
Term
Land plants are called embryophytes. They can be divided into five clades known as...? What two broader groups can these five clades be subdivided into?
Definition

Broader group 1: Bryophytes

Containing: Bryophytes 

 

Broader group 2: Tracheophytes

Containing: Lycophytes, Pteridophytes, Gymnosperms, Angiosperms

Term
The main difference between Gymnosperms and Angiosperms is that Angiosperms what?
Definition
Angiosperms flower and produce fruit
Term
A synapomorphy is a shared trait among a clade. One synapomorphy among modern plants is a cuticle. What does this do?
Definition
Cuticles are a waxy outer layer used to keep water inside.
Term
What is a Briophyte? Give two examples of one.
Definition
A briophyte is a non-rooted and non-flowering plant. They reproduce by spores and contain no vascular tissue. An example of a Briophyte is a moss and liverwort.
Term
What is one common trait that Gymnosperms and Angiosperms share?
Definition
They are both seed bearing.
Term
What are Pteridophytes? Give an example of two.
Definition
Pteridophytes are vascular, flowerless, green plants. Ferns and Horsetail are an example of this type of plant.
Term
What are the two subdivisions of Angiosperms? How do they differ? Give an example of each.
Definition

Angiosperms can be divided into:

  • Monocots - They have one cotydelon (embryonic leaves). This gives the leaves mostly parallel veins like those found in grass.

AND

  • Eudicots have two cotydelons. This gives their leaves branched veins and can lead to secondary growth. Parted flowers are an example of this.
Term
What four basic structures do Angiopserms have?
Definition
They have roots, stems, leaves and flowers.
Term
True or false? Seeds replaced spores for reproductivity in Gymnosperms and Angiosperms.
Definition
True
Term

Name all of the parts of this flower.

[image]

 

Definition
[image]
Term
What structure of an Angiosperm is the celery that we eat? What can be used to dye it?
Definition
The stem and leaves of celery are eaten. Methelyne blue is used to stain it.
Term
Where are the four structures of Angiosperms within an onion?
Definition
The roots are located below the bulb. The stem is comprised of an area between the bulb and roots, and the bulb. Leaves grow out of the bulb and flowers sit on top.
Term
Is the main part of the carrot a root or stem? What dye can be used to stain cross sections?
Definition
The main part of the carrot is a root. Methelyne blue can be used to stain cross sections.
Term
Is a potato a root or stem of the plant? What type of dye can be used on its cross sections?
Definition
A potato that you eat is a stem (tuber), where the root has thickened underground for storage. IKI can be used to stain their cross sections.
Term
Vascular tissue first appeared when?
Definition
After mosses, but before club mosses and ferns.
Term
Which clade had the first "true roots"? Out of the five clades, which does not have true roots?
Definition
Lycophytes were the first to have these, and Bryophytes do not have them.
Term
Which 3 types of plants have "true leaves"?
Definition
Angiosperm, Gymnosperm, Ferns
Term
What is the "male" part of a flower? What is the female part?
Definition
The male part is called the stamen. It is made up of the anther and filament. The female part is called the pistil. It is made up of the stigma, style, ovary and ovule.
Term
Five stains used in lab are IKI, phloroglucinol, methylene blue, HCl and toluidene blue. Which three stain living tissue and which two stain lignin in xylem? What colors are each?
Definition

IKI, toluidene and HCl stain living tissue. IKI stains blue (& black), toluidene stains blue and HCl stains red.

 

Methelyene blue and phloroglucinol stain lignin in xylem. Methelyene blue stains blue and phloroglucinol stains red.

Term
What is a petiole? Give an example.
Definition
A petiole is the area where a stalk (stem) is joined to a leaf. An example of this is can be found in celery.
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