Seed Plants Notes PDF

22.3 Seed Plants Learning Objectives ▪ Describe the reproductive adaptations of seed plants.(Period 1) ▪ Identify the reproductive structures of gymnosperms. (Period 2) Match the plant groups (Ward wall) Period 1 We will be able to answer the following questions 1. Why seeds are important? 2...

22.3 Seed Plants Learning Objectives ▪ Describe the reproductive adaptations of seed plants.(Period 1) ▪ Identify the reproductive structures of gymnosperms. (Period 2) Match the plant groups (Ward wall) Period 1 We will be able to answer the following questions 1. Why seeds are important? 2. What adaptation allow seed plants to reproduce without standing water? 3. What is the difference between pollen and seed? 4. Where are the seeds of an angiosperm kept? Vocabulary ▪ Seed, angiosperm, gymnosperm. ▪ Pollen grain, pollination. ▪ seed coat, ovules, pollen tube, cotyledons, monocots, dicots. ▪ woody plants, herbaceous plants. ▪ diploid, embryo, gametophyte, sporophyte phase. ▪ 6.pollen tube: which is an extension of the pollen grain. You have 7 minutes to solve with your grp members. ▪ Did you know that : Gymnos means naked(non-covered) Angeion means vessel(covered) Sperms seed Then what can you conclude about Angiosperms & gymnosperms? a. Which one their seed is exposed? b. Which one their seeds are kept inside a structure? c. Which one is a flowering plant , which one is a non flowering (cone) plant? d. which seed contains a tiny sporophyte surrounded by protective tissue? According to your understanding of Angiosperm and gymnosperm classify the following Draw this table in your NB/3 minutes Do the sorting activity with your class and fill in the table below Answer & Think Write in your NB/leave one line for answer/answer with your grp/all Qs in 5 minutes 1. What is the importance of seeds? 2. What is meant by adaptation? 3. What are the major problems that plants will face & therefore need to survive or adapt to? 3. How do you think the seed did, to adapt to such conditions?  Answer & Think 1. What is the importance of seeds? It is the plant embryo and is the food supply. 2. What is meant by adaptation? To make changes in order to survive certain conditions 3. What are the major problems that plants will face & therefore need to survive or adapt to? Reproduce and live in dry conditions 4. How do you think the seed did, to adapt to such conditions? They have a protective coat that allows them to reproduce in dry conditions Transfer of seeds by pollination Protections of embryos in seeds, Dormant Seeds: Many desert plants produce seeds that can remain dormant for long periods, waiting for suitable conditions (e.g., rain) to germinate. To test your understanding, answer the questions in spin the wheel activity The First Seed Plants Seed: is the plant embryo and food supply Seed plant adaptations: reproduction by cones or flowers pollination embryos in seeds Dormancy (in active seeds) Revise the parts of the flower? Which parts are the female, male parts? Cones Gymnosperm seeds are located on scales in cones. Flowers Angiosperms: seeds in flowers Characteristics of Monocots and Dicots Flowering plants seed germinate either as monocots or dicots cotyledons with different shapes and characteristics(cotyledons store nutrients and transfers them to the embryo during germination). corn, wheat, lilies, orchids, and palms Which type of plant has two cotyledons? roses, clover, tomatoes, oaks, and daisies Angiosperm Life Cycle Pollen and Seeds Gymnosperms Angiosperms Pollination: is the transfer of pollen to the female portions (self or cross-pollination) Wind pollination is less Animal pollination such as, efficient than animal birds, and bats also insects. pollination which is by Plant (flower) has adaptations fruits. such as bright colors petals, Because it relys on sweet nectar, to attract and favorable weather and reward animals. sheer numbers of pollen grains to get pollen from one plant to another Types of pollination https://create.kahoot.it/details/4d8a21bc-a6e2-47c3-ae12-cb5b22d1e418  Period 2 The Life Cycle of a Gymnosperm Objectives: Identify the reproductive structures of gymnosperms. The Life Cycle of a Gymnosperm Write the following questions, leave one line, with your friends find the answer from your book in grps, 7 minutes. 1. Give examples of gymnosperm plants. 2. How does fertilization take place in gymnosperms in the absence of water? 3. What is the difference between pollen cones and seed cones? 4. How long is the conifer life cycle? 5. What is the difference between pollination and fertilization? 6. What do we call a plant that lives 2 years? 7. What structure surrounds seeds in angiosperms? Observe the difference between a pollen cone and a seed cone. Pollen Cones and Seed Cones Reproduction in conifers takes place in cones: pollen cones seed cones Male cone (or pollen cone) Study the Pine Life Cycle Pine trees After studying the life cycle you will do the following activities 1. Sorting activity of haploid and diploid (7 minutes) 2. Cut and glue activity to order the events (10 minutes) Summary of Seed Plants Seed plants have reproductive adaptations. In gymnosperms, pollen is directly transferred to the female cone. Vegetative Reproduction is a form of asexual reproduction of plants. It involves the growth of a new plant from a fragment of the parent plant or from a specialized reproductive structure such as rhizome, or bulb. Sprouting potato Strawberry plant Cholla cactus  Allows for Asexual genetically reproduction identical offspring Cutting/grafting used to make identical copies- used by Horticulturists No seed formation- reproduce faster Answer the following questions in NB 1. What are the potential benefits to vegetative reproduction? 2. What are the potential drawbacks to vegetative reproduction? What are the potential benefits to vegetative reproduction? Because vegetative reproduction does not involve pollination or seed formation, a single plant can reproduce quickly. In addition, asexual reproduction allows a single plant to produce genetically identical offspring. This enables well-adapted individuals to rapidly fill a favorable environment. What are the potential drawbacks to vegetative reproduction? One of the obvious drawbacks of asexual reproduction is that it does not produce new combinations of genetic traits, which may be valuable if conditions in the physical environment change. https://create.kahoot.it/share/angiosperm-and-gymnosperm-life- cycle/b06873de-c79d-4e27-8405-7ef7f6dbbd8f Plant life spans : An annual plant completes its life span sprouts from a seed, grows, produces new seeds, and dies in one growing season or less. This group includes many garden plants and most weeds. 1. Biennial plant’s life spans is two years. 2. Perennial plants can live for several years and usually produce flowers and seeds yearly.