1 / 19

Lab 29 Kingdom Plantae: seedless vascular plants

Lab 29 Kingdom Plantae: seedless vascular plants. Phylum Monilophyta: Ferns, Horsetails, and Whisk Ferns and Relatives. Ferns are the most widespread seedless vascular plants, with more than 12,000 species They are most diverse in the tropics but also thrive in temperate forests

darryld
Download Presentation

Lab 29 Kingdom Plantae: seedless vascular plants

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lab 29Kingdom Plantae: seedless vascular plants

  2. Phylum Monilophyta: Ferns, Horsetails, and Whisk Ferns and Relatives • Ferns are the most widespread seedless vascular plants, with more than 12,000 species • They are most diverse in the tropics but also thrive in temperate forests • Horsetails were diverse during the Carboniferous period, but are now restricted to the genus Equisetum • Whisk ferns resemble ancestral vascular plants but are closely related to modern ferns • They are all homosoprous

  3. Ferns Ferns have large leaves (called fronds) They underside of fronds have dots called sori, which contain many sporangia

  4. Phylum Pterophyta (fern sporophyte) PAGE 319-320 Answer question 1a, Question 2 a, b, e, and f examine live ferns, Sketch one and label: a frond, and pinnae and a sorus

  5. embryo

  6. Phylum Pterophyta (fern sporophyte) Procedure 29.1 (prepared slide of cross section of sorus) Follow step 5, sketch and label: frond, sorus, sporangium, spore

  7. Phylum Pterophyta (fern gametophyte) Procedure 29.1 (prepared slides of antherida) Follow step 1, sketch and label: gametophyte, antheridia Answer question 7 a and b (prothallium=gametophyte)

  8. Phylum Pterophyta (fern gametophyte and young sporophyte) Examine prepared slide of young sporophyte Label the gametophyte and the sporophyte

  9. Whisk fern Lack leaves Each yellow knob on a stem consists of three fused sporangia.

  10. Phylum Pterophyta (whiskfern) Procedure 29.3 Follow step 1 DEMO slide of Psilotum sporangium Sketch and label sporangium and spore Answer questions 9, b,c,d,e Follow step 2 and sketch live whiskfern Label one cluster of sporangia

  11. Horsetails Name refers to the brushy appearance of the stems. They were very diverse in the Carboniferous, today only 15 species remain All are in the genus Equisetum Stems have joints. Small leaves emerge from each joint. Stem is the main photosynthetic organ. At the tip of the stem are the strobili with sporangia that produce spores

  12. Phylum Pterophyta (horsetail or scouring rush) Page 327 Examine living Equisetum • Sketch and label stem and strobilus Answer question 10 a, b, c • Prepared slide of Equisetum strobilus Label sporangium, spore (dissecting scope)

  13. Phylum Lycophyta (club mosses, spike mosses and quillworts) Most primitive group of vascular land plants During the carboniferous period, there were lycophytes that were about 120 feet tall. Thrived in moist swamps, but became extinct when the climate got drier Living lycophytes are small herbaceous plants Club mosses and spike mosses have vascular tissues and are not true mosses

  14. Lycophytes have sporangia clustered into club-shaped cone (strobilus) Some species are homosporous (one type of spore) And others are heterosprous (two types of spores) “a new trait”

  15. Phylum Lycophyta The genus of the spike moss Selaginella includes familiar species such as the Resurrection Plant (Selaginella lepidophylla) the most diverse genus is Lycopodium, club mosses

  16. Phylum Lycophyta (spike moss) Procedure 29.4 Selaginella a heterosporous club moss Step 4 Examine Selaginella plants and sketch Prepared slide of Selaginella strobillus Sketch and label (megasproangium, megaspore and microsprangium) dissecting scope

  17. Phylum Lycophyta (club moss) Procedure 29.4 Lycopodium a homosporous club moss Step 1 Prepared slide of Lycopodium strobilus dissecting scope Sketch and label sporangium and spore

  18. Ecological and Economic Importance of seedless vascular plants The evolution of vascular tissue, roots and leaves accelerated photosynthesis rates. These Carboniferous forests removed CO2 to such degree that it caused global cooling and the spread of glaciers. Their remains of these plants formed thick deposits of organic matter. which turned into? Today coal is mined and burned to generate much of the electricity.

  19. Answer questions page 328 2, 3, 4

More Related