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What is the name of the group we are studying today and tomorrow? A) flowering plants B) fungi C) bacteria D) mosses E) don’t care, where are the snacks?. Bryophytes- Chapter 16. True or false . Bryophytes are plants. Bryophytes grow only in the water, but not on land.

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What is the name of the group we are studying today and tomorrow? A) flowering plants B) fungi

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What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • What is the name of the group we are studying today and tomorrow?

    • A) flowering plants

    • B) fungi

    • C) bacteria

    • D) mosses

    • E) don’t care, where are the snacks?


Bryophytes chapter 16

Bryophytes- Chapter 16

  • True or false.

    • Bryophytes are plants.

    • Bryophytes grow only in the water, but not on land.


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • Which of the following is not true of plants?

    • A) they are mostly autotrophic

    • B) they are primarily terrestrial

    • C) they have the same photosynthetic pigments

      as brown and red algae

    • D) they are multicellular

    • E) still don’t care, where is the popcorn?


Kingdom plantae embryophytes

Kingdom Plantae- embryophytes

  • Autotrophic (mostly).

  • Multicellular with advanced tissue differentiation.

  • Heteromorphic alternation of generations, where the

    • Diploid phase (sporophyte) includes an embryo.

    • Haploid phase (gametophyte) produces gametes by mitosis.

  • Chlorophylls A & B, carotenoids.

  • Starch stored inside chloroplasts.

  • Habitat- primarily terrestrial.

  • Sporopollenin present.

  • Male and female gametangia present.

  • Photosynthetic tissues produced by an apical meristem.

  • Sporangia with a sterile jacket.

  • Plasmodesmata present.

  • ~330,000 species.


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • True or false.

    • ‘Bryo’ is greek for moss.

    • Liverworts and hornworts are bryophytes.

    • The moss sporophyte is nutrionally dependent on the female gametophyte.

    • Water is not required for fertilization in mosses.


Bryophytes

Bryophytes

  • Bryo- gr. moss.

  • Liverworts, hornworts, and mosses.

  • Gametophyte dominant.

  • Sporophyte matrotrophic and short lived (6-16 weeks).

  • Water required for fertilization.

  • Sexual reproduction involves antheridia and archegonia.

  • Biflagellated sperm.

  • Asexual reproduction by fragmentation and gemmae.

  • Plasmodesmata present.

  • Rhizoids in most.

  • Protonemata in most (not the hornworts).

  • Stomata or stomata-like structures present.

  • ~16,000 species.


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • True or false.

    • Liverworts because they are shaped like a liver and look glandular were used to treat liver disease in earlier times.

    • The specimen marked ‘A’ is a leafy liverwort and the one marked ‘B’ a thalloid liverwort.

A

B


Marchantiophyta liverworts

Marchantiophyta- liverworts

  • Hepato- gr. liver.

  • Sporophytes without stomata, but have pores.

  • Specialized conducting tissue absent.

  • Gametophytes thalloid or leafy.

  • Rhizoids single celled.

  • Simplest of all living plants.

  • Sporangium with dehiscent capsule, elaters present in some to disperse spores.

  • Most cells contain numerous chloroplasts.

  • Habitat- moist, some aquatic, temperate and tropical.

  • 6,000 species.

  • Examples- Marchantia and Riccia.


Marchantia antheridia

Marchantia Antheridia


Marchantia archegonia

Marchantia Archegonia


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • True or false.

    • Shown below are male gametophytes.


Anthocerotophyta hornworts

Anthocerotophyta- hornworts

  • Antho- gr. flower, keras- gr. horn.

  • Sporophytes with stomata.

  • Specialized conducting tissue absent.

  • Gametophytes thalloid.

  • Rhizoids single celled.

  • Sporangia dehisce to disperse spores, elater-like structures present.

  • Most cells contain a single chloroplast.

  • Sporophyte with basal intercalary meristem.

  • Habitat- moist temperate and tropical.

  • 100 species.

  • Example- Anthoceros


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • Hornwort sporophytes ___________________.

    • A) are nutrionally dependent on the female gametophyte

    • B) are primarily terrestrial

    • C) lack stomata

    • D) contain a sporangium

    • E) all of the above

  • True or false.

    • Anthoceros is an example of a true moss (Phylum Bryophyta).

    • Hornwort gametophytes are thalloid.


Bryophyta mosses

Bryophyta- mosses

  • Sporophytes with stomata.

  • Specialized conducting tissue- leptoids and nonlignified hydroids.

  • Gametophytes leafy.

  • Rhizoids multicellular.

  • Sporangia with dehiscent capsules.

  • Most cells with numerous chloroplasts.

  • Habitat- moist and dry, temperate and tropical, some aquatic.

  • 9,500 species.

  • Example- Polytrichum, Sphagnum, Mnium.


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

“Cushiony”

“Feathery”


Three moss classes

Three Moss Classes

  • Bryidae- true mosses, Polytrichum.

    • Protonema with a single row of cells with slanted cross walls.

    • Leafy gametophytes develop from minute budlike structures.

  • Sphagnidae- peat mosses, Sphagnum.

    • Protonema with plate of cells that is one layer thick.

    • Gametophytes with clusters of branches, 5 per node.

    • Explosive capsular operculum.

  • Adreaeidae- granite mosses, Andreaea.

    • Protonema with 2 or more rows of cells.

    • Capsule dehisces by splitting in four.

    • Rhizoids occur in 2 rows.

    • Mountainous or arctic regions on rocks.


What is the name of the group we are studying today and tomorrow a flowering plants b fungi

  • Moss sporophytes ____________________.

    • A) are nutrionally dependent on the female gametophyte

    • B) are aquatic and terrestrial

    • C) have multicellular rhizoids

    • D) include Polytrichum, Sphagnum, and Mnium

    • E) all of the above

  • True or false.

    • Moss sporophytes contain stomata.

    • Moss gametophytes are thalloid and leafy.


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