Ex07- Analysis(1) - BIO 206L Exercise 7 Lab Analysis Please...

BIO 206L: Exercise 7 Lab Analysis
Please answer the following questions during lab. Keep in mind that you need to work independently. Write in
complete sentences, using proper grammar and spelling when an explanation is required. Be complete yet
concise in your answers. Submit your report as a pdf file on Canvas before the beginning of the next lab.
1) In section 7.1 you observed and took digital images of prepared slides of plant tissues. Use these images to
describe how you can distinguish the following specimens ( i.e. what sets them apart from one another): algae,
bryophytes, pteridophytes, gymnosperms and angiosperms.
 Algae are photosynthetic protists that can be uni- or multi-cellular.
o
Euglena, 40x objective
o Distinguishing features:
 aquatic
 photosynthetic
 do not contain xylem or phloem
 do not have roots, leaves, or flowers
 Bryophytes are non-vascular plants that live on land but lack some of the terrestrial adaptations of
vascular plants; examples are mosses, liverworts, or hornworts.
o Distinguishing features:
 photosynthetic
 usually located in damp and low-light areas
 do not contain xylem or phloem
 do not have flowers or true roots
 produce spores
 Pteridophytes are vascular plants that reproduce by releasing spores, such as ferns.
o Distinguishing features:
 photosynthetic
 have roots, stems, and leaves
 contain xylem and phloem
 produce spores
Exercise 7 Page 1 of 10

Exercise 7 Page 2 of 10

 Gymnosperms are vascular plants that bear “naked” seeds (seeds not enclosed in protective chambers).
o
o
Juniper
o Distinguishing features:
 photosynthetic
 have leaves that usually appear needle-like and stay green year-long
 have roots and stems
 contain xylem and phloem
 produce (“naked”) seeds, like pine cones
 Angiosperms are flowering plants that form seeds inside protective chambers (ovaries).
o Distinguishing features:
 photosynthetic
 have leaves that are usually broad, change color, and die during autumn
 have roots and stems
 contain xylem and phloem
 produce protected seeds
o Can be monocot:

Carrion Flower Root, 4x objective
o Or, can be eudicot:
Exercise 7 Page 3 of 10


Dicot Root, 4x objective
 Reece JB, Urry LA, Cain ML, Wasserman SA, Minorsky PV, Jackson RB. Campbell Biology. 9th ed. San Francisco, CA:
Benjamin Cummings; 2012.