Life Science Grade 11

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Grade 11 Life Sciences Lesson PlansGRADE 11 SUBJECT Life Sciences WEEK 4 TOPIC Plant Groups Lesson 3LESSON SUMMARY FOR: DATE STARTED:LESSON OBJECTIVESDATE COMPLETED:Content: (CAPS p40)Biodiversity of plants: BryophytesGrouping of bryophytes according to the presence/absence of:• Vascular tissue (xylem and phloem).• True leaves and roots.• Seeds or spores.• Fruit.The learners will be able to:• Discuss Bryophytes in terms of: true leaves, true roots, vascular tissue, seeds/spores, fruit, and dependence on water for reproduction.TEACHER ACTIVITIES LEARNER ACTIVITIES TIMING RESOURCES NEEDED1. Whole class discussion, complete definitions and table in notebook, as well as a practicallooking at Bryophytes.1.1 IntroductionRecap on the following terms: Vascular tissue, true leaves and roots, spores , seeds and fruit.Recap on the flow chart showing an alternation of generations.2.2 Main Body (Lesson presentation)Explain the following to learners:• The Bryophytes are divided into 3 groups: mosses, liverworts and hornworts.• These plants grow in shady damp habitats.• They are small plants.• The gametophyte generation is larger and longer living than the sporophyte generation.• They have no true roots, stems or leaves. They are thallus plants. (No xylem and phloem ispresent).• They reproduce by spores, there are no seeds present.• They are dependent on water for sexual reproduction. The sperm cells swim in water fromthe male gametophyte to the female gametophyte which houses the egg.• Asexual reproduction by spores is dependent on dry weather for spore dispersal.• The gametophyte generation is dominant over the sporophyte generation.• Learners to draw up the following table in their notebooks:Whole class discussionLearners to copy down the flowchart or phylogenetic tree.Whole class teaching, followedby writing definitions innotebooks,10 min10 minSolutions for all Fig 2.2 p56Understanding Life SciencesFig 1.2.1 p54Solutions for all Fig 2.3 p57Study and Master Fig 1.2.2p91Term 1 Page 28© Gauteng Department of Education (CAPS version)
Grade 11 Life Sciences Lesson PlansCharacteristic Bryophytes Pteridophytes Gymnosperms AngiospermsVasculartissueTrue leaves orrootsSeeds orsporesFruitDependenceon water forreproductionExamples(As each of the plant groups are discussed in the next few lessons so learners should completethe above table, which will provide them with a summary of the work.)• Using their textbooks and from the class discussion learners are to complete the tableabove for the Bryophytes.• Practical Work:Bryophytes:Working in small groups learners are to investigate the external features of a mossgametophyte plant using a hand lens.1. Provide each group with a hand lens. Using the hand lens and diagrams in the text book orone drawn on the chalk board /OHT each learner is to draw and label a diagram of a mossplant showing both the gametophyte and sporophyte generations..2.3 ConclusionAllow groups to report back on their tables.Learners write the ‘framework’ ofthe table across an A4 page intheir notebooks.Learners to complete Bryophytecolumn of table.Using hand lenses learners drawand label a diagram of a mossplant in their notebooks.15 min20 minSolutions for all p58-59Study and master p90-91Understanding Life Sciencesp55-56Solutions for all p59 Practicalactivity Activity 2 p92Study and masterUnderstanding Life ScienceActivity 1.2.1 p56Practical Workshop 1 Gr 11Worksheet 2Homework:Learners to bring a fern plant to school. If these are not available then a diagram or photo of afern plant will suffice.5 minReflection / Notes:Term 1 Page 29© Gauteng Department of Education (CAPS version)
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Life Science Grade 11

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