Bio 200 Lab 9; Ashley Valencia

pdf

School

Cerritos College *

*We aren’t endorsed by this school

Course

200

Subject

Biology

Date

Feb 20, 2024

Type

pdf

Pages

Uploaded by ChancellorWasp3930

Bio 200 Early Plants Lab Kingdom Plantae - Supergroup Archeaplastida Objectives 1. To examine the diversity of the Kingdom Plantae 2. To Identify and learn the characteristics that distinguish Bryophyta, Marchantiophyta, and Monilophyta. Lab SLO Objective #3 3. To understand the alternation of generations life cycle for land plants. See page 618 of text. 4. To understand the key adaptations for the early plants Circle the correct response for each statement. • Both Marchantiophyta and Bryophyta have a GAMETOPHYTE or SPOROPHYTE (circle) dominant life cycle. • Monilophyta has a GAMETOPHYTE or SPOROPHYTE (circle) dominant life cycle. • Marchantiophyta, Bryophyta, and Monilophyta are HOMO or HETERO sporous plants (circle). • Marchantiophyta, Bryophyta, and Monilophyta have the eggs develop in the ANTHERIDIA or ARCHEGONIA (circle). • Marchantiophyta, Bryophyta, and Monilophyta have the sperm develop in the ANTHERIDIA or ARCHEGONIA (circle). Phylum Marchantiophyta - liverworts (Ch 25.3) If available, observe the fresh material by using your dissecting scope. Otherwise use your text and watch the videos on Canvas to make sure you know what they look like. o What generation is the thallus? o What is its ploidy level? o What is the function of the pores? Look for some “half cups” filled with small pieces of the thallus nestled inside. These are known as gemmae (gemma = singular). If there is no fresh material, then watch the Canvas videos to see the gemmae. o If gemmae are clones of the thallus they come from, are they made asexually or sexually? Observe the preserved archegoniophore (archegonia= female reproductive area, phore = to bear) and antheridiophore (antheridia = male reproductive area, phore = to bear) of the liverwort, Marchantia , located in alcohol in a jar. Do not take them out, but realize these structures are what you are looking at on the slides. These structures are located on the thallus and are 1N. Draw and label the archegonia and antheridium slides of Marchantia . Eggs are found under the archegoniophore and sperm are found on top of the antheridiophore. Only one egg develops per archegonium. Use your textbook (Figure 25.11) to help with structure identification. o What cellular division produces the gametes in the gametangia?

o What is the ploidy level of the finished gametes? o Are the sperm flagellated or unflagellated? See text and Canvas videos for help. Draw and label the sporophyte slide of Marchantia . Each sporophyte capsule is attached with a foot and seta to the underside of the female archegoniophore. Inside the capsule you should find thin wavy lines that are parallel with the capsule length. These are elaters that twist around and help with spore dispersal. Use your textbook for help with structure identification. o On which gametophyte, male or female, should the sporophyte be found? o Inside the capsule are the spores. What is the ploidy level of the sporophyte structure? o What is the ploidy level of the finished spores? o What cellular division is used to make spores? Phylum Bryophyta - mosses (Ch 25.3) If available, observe the fresh material. Along with the gametophytes you might find thin green filaments growing amongst the gametophytes. These are protonemata (protonema = singular), which came from geminated spores, and they will eventually grow to look like the adult gametophytes. Rhizoids are found at the base; they are not roots. There may be sporophytes that stick upwards from some of the gametophytes. Draw and label the archegonia and antheridium slides of mosses. The gametangia are located at the top of the moss structures. Only one egg develops per archegonium. Use your text to help with structure identification. o What is the ploidy level of the moss gametophytes? o What cellular division produces the gametes? o What is the ploidy level of the finished gametes? o Are the sperm flagellated or unflagellated? See Canvas videos for help. Draw and label the sporophyte (only capsule portion) slide of a moss. You will need to move your slide around to see the whole structure at 40X. Use your text to help with structure identification. o What cellular division produces the spores? o What is the ploidy level of the finished spores? Phylum Monilophyta - ferns If available, observe the fresh fern material. It will be your representative plant from Monilophyta for the course. Draw and label the slide of the sorus (indusium) using your text to help with structure identification. The slide is a cross section through a portion of the leaflet with the sorus below. The indusium is a shield that holds the sorus against the leaflet, protecting the developing sporangia. o What are the spores ’ ploidy level and what cellular division was used to make them? o What is the ploidy level of the leaflet?

Draw and label the fern gametophyte with archegonia and antheridium. Each gametophyte will produce BOTH gametangia, but not at the same time. The gametophyte is upside down; you are looking at the underside. The slide will have several gametophytes per slide. You will need to view one gametophyte to view archegonia and view a different gametophyte to view the antheridia. Only one egg develops per archegonium. o Why would male and female gametangia mature at different times on the same gametophyte? o What cellular division produces the gametes? o What is the ploidy level of the finished gametes? o Are the sperm flagellated or unflagellated? Make sure you know the answers to the following: 1) What characteristics limit the height of mosses and liverworts? 2) Given your answer to question 1, why is a moss blade so thin, almost see-through? 3) What features do ferns have that mosses and liverworts do not possess that make them better adapted for different environments & better dispersers of their spores? 4) What is the advantage of having sporangia above the gametophyte in mosses and liverworts? 5) You should be able to diagram the life cycle of a liverwort, moss, and fern. On your drawing you need to be able to label where meiosis & mitosis occur, what stages are unicellular or multicellular, and the ploidy level of each stage. Your drawings of the different plants should be recognizable as that plant type.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

bio final questions .docx

50 min version Activity - Darwin's Finches Natural Selection.docx

Kami Export - Week_8a_Eukaryotic_Gene_Expression_v2.pdf

HIVELISA_ReportTemplate.docx

2023 Research Project Proposal Form.pdf

Lab 10.pdf

CM156-Final-Winter 2023-Mar. 24-KEY.pdf

BIO311D WK4 Discussion B Assignment.docx

Bio 311D Week 3 discussion A (1).docx

BIO311D WK5 Discussion B Assignment.docx

BIO311D WK4 Discussion A Assignment.docx

Exam_3_review_questions_answersA.pdf

Recommended textbooks for you

Biology: The Dynamic Science (MindTap Course List)

Biology

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Cengage Learning

Biology 2e

Biology

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:OpenStax

Biology (MindTap Course List)

Biology

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Cengage Learning

Biology: The Unity and Diversity of Life (MindTap...

Biology

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cengage Learning

Biology: The Unity and Diversity of Life (MindTap...

Biology

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Recommended textbooks for you

Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning