Lab Exam

Question 1

What are the three phyla/divisions of structurally rather simple terrestrial plants that encompass the small group of bryophytes

Answer 1

(marchantiophyta(liverworts), Anthocerophyta(hornworts) and Bryophyta(true mosses)

Question 2

How are the three phyla of bryophytes similar (marchantiophyta(liverworts), Anthocerophyta(hornworts) and Bryophyta(true mosses)

Answer 2

• They have no specialized tissues such as conducting or supporting tissues.
• They exhibit alteration of heteromorphic generations, with a haploid and diploid generation
• their sporophytes are dependent on the gametophytes and bear only a single sporangium
• The gametophyte is the long lasting (dominant) generation/life form
• require water for fertilization and therefore often low- growing in moist places
• has both archegonia and antheridia on gametophyte

Question 3

What are the two groups that liverworts can be divided into?

Answer 3

The thallose (non-leafy) liverworts and the Leafy liverworts
-marchantia= thallose liverwort

Question 4

What is a thallus?

Answer 4

Ribbon-like dichotomously branching body with a midrib region in the middle/centre of the ribbon (how the gametophyte grows)

Question 5

What are the two classes of Moss that we look at

Answer 5

The Bryidae(The true mosses) and Sphagnum(The peat Mosses)
*didnt look at granite moss

Question 6

What are the three divisions of seedless vascular plants we examine in lab

Answer 6

Lycophyta(club mosses&spike moss), Sphenophyta(horsetails) and pterophyta(ferns)

Question 7

What are the two sp of the phyla lycophyta(fake mosses) that we look at *seedless vascular

Answer 7

• lycopodium(club moss) and Selaginella(spike moss)

* isoetes(quillworts) are also a sp of lycophyta but not thoroughly discussed