WK2 Ch.22.2 Plant Diversity PDF

Ch 22.2 Plant Diversity Objectives of this lesson Identify the factor that limits the size of bryophytes. Explain why vascular tissue is important. Identify the adaptations that allow seed plants to reproduce without water. Non Vascular Plants Watch the video to fill in the table below....

Ch 22.2 Plant Diversity Objectives of this lesson Identify the factor that limits the size of bryophytes. Explain why vascular tissue is important. Identify the adaptations that allow seed plants to reproduce without water. Non Vascular Plants Watch the video to fill in the table below. https://www.youtube.com/watch?v=eN5ROvxpx8Q&t=39s Bryophyta Anthocerophyta Heptaicophyta Vascular or nonvascular Seedless or has seeds True or not true (look like structures) leaves, roots and leaves Multi or unicellular rhizoids Example Reason for naming Answers Bryophyta Anthocerophyta Heptaicophyta Vascular or nonvascular nonvascular nonvascular nonvascular Seedless or has Seedless Seedless Seedless seeds True or not true Look like structures Look like structures Look like structures (look like structures) leaves, roots and leaves Multi or unicellular multi unicellular unicellular rhizoids Example mosses hornworts liverworts Reason for naming Horn like sporophyte They were used to treat a liver ailment in medieval era Nonvascular Plants Search in grps for 5 minutes to answer the following questions? 1. What is the most common places for bryophyte live? 2. How does they get water and nutrients if they don’t have vascular tissues? 3. What is the name of the bryophytes body? Why is it called as such? 4. What is the dominant phase in its life cycle gametophyte or sporophyte? 5. What is the name of structure that helps the sperm to move? 6. What is the relation between cyanobacteria and anthocerphyta? 7. What is the most primitive land plant? Search for 5 minutes to answer the following questions? 1. What is the most common places for bryophyte live? Damp places but can live in dry freezing places too 1. How does they get water and nutrients if they don’t have vascular tissues? Osmosis and Diffusion 2. What is the name of the bryophytes body? Why is it called as such? Thallus (it means not true) 3. What is the dominant phase in its life cycle gametophyte pr sporophyte? Gametophyte (1N)( it contains what it most need to survive) 4. What is the name of structure that helps the sperm to move? Flagella 5. What is the relation between cyanobacteria and anthocerphyta? Mutualists as the bacteria lives in the slime mucilage filling between cells 6. What is the most primitive land plant? Hepticophytes as they don’t have the usual plant DNA Seedless Vascular Plants Objectives: - What is mean by seedless plants? - How do they reproduce? - What adaptations they do to survive? - Main divisions and examples of each?  Seedless Vascular Plants/ Vocabulary Characteristics: it does have vascular tissues Reproduce by spores. Divisions: lycophyte (spike mosses), pterophyta(ferns). Strobilus: compact cluster of spore-bearing structures. Epiphyte: a plant that lives anchored to an object or another plant. Pterophyta: includes ferns and horse-tails. Rhizome: a thick underground stem that stores food. Sporangium: where spores form (Fern spores forms this structure). Lycophyte (spike mosses) Pterophyta (ferns) Strobilus Pterophyta Epiphyte Rhizome Lycophyte/ Ground pines - Example: Club Mosses - Why called club mosses? They resemble moss gametophytes, and their reproductive structures that produce spores are club-shaped or spike shaped - Dominant Phase: The sporophyte generation of lycophytes is dominant. - Lycophytes have roots, stems, and small, scaly, leaflike structures. - Another name for some lycophytes is ground pines because they resemble miniature pine trees. - Many tropical lycophyte species are epiphytes. An epiphyte is a plant that lives anchored to an object or another plant. - Their stems are either branched or unbranched and either grow upright or creep along the soil’s surface - Most of the club mosses belong to two genera—Lycopodium and Selaginella Division Pterophyta/ Ferns - Examples: ferns and horsetails. - Fern gametophyte and sporophyte, is tiny, thin structure is smaller than a pine. - Life cycle: It grows from a spore and has male and female reproductive structures. Following fertilization, the sporophyte grows form and is briefly dependent on the gametophyte. - Where they live: Although ferns are most common in moist environments, they can survive dry conditions. - Ways of adapting to drought: 1. Dormancy: When water is scarce, the life processes of some ferns slow so much that the ferns appear to be lifeless. When water becomes available, the ferns resume growth. 2. Rhizomes: They can produce sporophytes without fertilization. Eventually, the sporophyte produces roots and a thick underground stem called a rhizome. The rhizome is a food-storage organ. Division Pterophyte/ Ferns - Fronds: The frond is part of the sporophyte generation of ferns. Fronds have branched vascular tissue and vary greatly in size. - Sporangia: Fern spores form in a structure called a sporangium (plural, sporangia), - Sori: A clusters of sporangia form a sorus (plural, sori). usually are located on the undersides of fronds. Division Pterophyte/horsetail - Structure: The typical structure of horsetails—ribbed, hollow stems with circles of scalelike leaves. - Like lycophytes, horsetails produce spores in strobili at the tips of reproductive stems. When they are released into a favorable environment, horsetail spores can develop into gametophytes. - Special component: Horsetails contain a scratchy substance called silica. You can feel it when you rub your finger along a horsetail stem. - Use: They used to use it for cleaning because silica is hard. INSPIRE Mercury is the closest Venus has a beautiful name planet to the Sun and high temperatures EDUCATE ADMISSIONS Earth is the third planet Despite being red, Mars is from the Sun. We all live actually a cold place here Challenge time …. Kahoot it https://play.kahoot.it/v2/?quizId=c8a6e349-363c-4ad7- 9a3c-b002f15f09bf  Critical Thinking- Questions Why are ferns common in damp forests, but not in grasslands, desserts, and other dry environments?  Critical Thinking- Questions Why are ferns common in damp forests, but not in grasslands, desserts, and other dry environments? the combination of moisture, shade, and specific soil conditions in damp forests creates an ideal environment for ferns spores to germinate, while the arid, sunny, and nutrient-poor conditions in grasslands and deserts make it difficult for them to grow and reproduce.