Section 24 1 Reproduction With Cones and Flowers (pages )

Transcription

1 Chper 24 Reproducio of Seed Pls Secio 24 1 Reproducio Wih Coes d Flowers (pges ) TEKS FOCUS: 13B Mehods of reproducio; TEKS SUPPORT: 3C Impc of reserch o scieific hough d sociey; 5B Cell differeiio; 7B Resuls of url selecio i dpio This secio describes he reproducive srucures of gymosperms d giosperms. I lso explis how polliio d ferilizio differ bewee giosperms d gymosperms. Alerio of Geerios (pge 609) 1. Circle he leer of ech seece h is rue bou lerio of geerios i pls.. I ll pls, he sporophye geerio is diploid. b. The gmeophye i seed pls is hidde wihi he sporophye pl. c. The recogizble pr of seed-berig pl is he gmeophye. d. I ll pls, he gmeophye geerio is hploid. 2. A impor red i pl evoluio is he reducio i he size of he gmeophye. 3. Where re he gmeophyes foud i gymosperms d giosperms? They re foud iside he coes i gymosperms d iside flowers i giosperms. Life Cycle of Gymosperms (pges ) 4. Reproducio i gymosperms kes plce i coes. 5. Circle he leer of wh produces coes i gymosperms.. mure sporophye c. pie rees b. mure gmeophye d. polle seeds 6. Wh kid of coe produces mle gmeophyes? Polle coes 7. The mle gmeophyes of gymosperms re clled polle gris. 8. Circle he leer of ech seece h is rue bou seed coes.. They produce polle gris. b. They produce femle gmeophyes. c. They hve wo ovules he bse of ech scle. d. They re geerlly much lrger h polle coes. 9. Is he followig seece rue or flse? Ech mure femle gmeophye cois hudreds of egg cells redy for ferilizio. flse 10. How log does he gymosperm life cycle ypiclly ke o complee? I ypiclly kes wo yers. Guided Redig d Sudy Workbook/Chper

2 11. I he gymosperm life cycle, how do he polle gris rech he femle coes? The polle gris re relesed by he mle coes, d some re crried o he femle coes by he wid. 12. Wh esures h polle gris sy o he scles of femle coe? clled polliio drop, esures h he polle gris sy. A sicky meril, 13. A srucure grow by polle gri h cois wo sperm uclei is clled () polle ube. 14. Wh hppes o he wo sperm cells oce he polle ube reches he femle gmeophye? Oe sperm ucleus disiegres, d he oher ferilizes he egg coied i he femle gmeophye. 15. Circle he leer of wh gymosperm embryo c be clled.. mure gmeophye b. ew sporophye c. mure sporophye d. ew gmeophye 16. Wh re he hree geerios of he gymosperm life cycle h re coied i gymosperm seed? The ouer seed co is pr of he old sporophye geerio, he hploid cells surroudig he embryo re pr of he femle gmeophye, d he embryo is he ew sporophye pl. Srucure of Flowers (pges ) 17. Wh re he four kids of specilized leves h compose flower?. Sepls b. Pels c. Smes d. Crpels 414 Guided Redig d Sudy Workbook/Chper 24

3 Mch he florl pr wih is descripio. Florl Pr Descripio d 18. Sepls. Slk wih he sigm he op i 19. Pels b. Srucures where mle gmeophyes re produced h 20. Sme c. Flower pr h cois oe or more ovules e 21. Filme d. Ouermos, gree florl prs b 22. Ahers e. Log, hi srucure h suppors her f 23. Crpels f. Iermos florl prs h produce femle gmeophyes c 24. Ovry g. Sicky, op porio of syle 25. Syle h. Mle srucure mde up of her d filme g 26. Sigm i. Brighly colored prs jus iside he sepls 27. Lbel he prs of he flower o he illusrio. Pel Sigm Syle Aher Filme Sme Syle Ovules Ovry 28. Wh is pisil? I is reproducive srucure formed from he fusio of severl crpels. 29. Wh re he sepre mle d femle flowers o cor pl? The ssel is flower h produces mle gmeophyes, d he silk is he syle of flower h cois he femle gmeophye. Guided Redig d Sudy Workbook/Chper

4 Life Cycle of Agiosperms (pges ) 30. Where does reproducio i giosperms ke plce? I kes plce wihi he flower. 31. Iside he hers, ech cell udergoes meiosis d produces hploid cells clled megspores. 32. I giosperms, he polle gri is he eire mle gmeophye. 33. The femle gmeophye of giosperm, coied wihi he ovry, is clled he embryo sc. 34. Circle he leer of ech seece h is rue bou he life cycle of giosperms.. The cycle begis whe he mure sporophye produces flowers. b. A polle gri sops growig whe i is relesed from he sigm. c. The femle gmeophye develops i he ovule. d. The egg ucleus is oe of he eigh uclei i he embryo sc. Polliio (pge 615) 35. How re mos gymosperms pollied? Mos re pollied by he wid. 36. How re mos giosperms pollied? Mos re pollied by imls. 37. Wh re hree kids of imls h pollie giosperms? Isecs, birds, d mmmls pollie giosperms. Ferilizio i Agiosperms (pge 616) 38. Wh re he wo disic ferilizios h ke plce i giosperms?. Oe of he sperm uclei fuses wih he egg ucleus o produce diploid zygoe cell. b. The oher sperm ucleus fuses wih wo oher uclei i he embryo sc o form riploid cell. 39. The food-rich issue h ourishes seedlig s i grows is kow s edosperm. 40. Why is ferilizio i giosperms kow s double ferilizio? Two disic ferilizio eves ke plce bewee he mle d femle gmeophyes. 416 Guided Redig d Sudy Workbook/Chper 24

5 41. Complee he flowchr bou he life cycle of giosperms. Iside he hers, ech cell udergoes meiosis o produce megspores. Ech megspore becomes () polle gri. The ucleus of ech polle gri produces wo hploid uclei. The polle gri lds o sigm d begis o grow () polle ube h eveully reches he ovry d eers he ovule. Oe of he sperm uclei fuses wih he egg ucleus o produce () zygoe, d he oher sperm uclei fuses wih wo oher uclei o form cell h grows io he edosperm. Redig Skill Prcice Ouliig is wy you c help yourself udersd beer d remember wh you hve red. Wrie oulie for Secio 24 1, Reproducio Wih Coes d Flowers. I your oulie, use he blue hedigs for he firs level d he gree subhedigs for he secod level. The, lis he deils h suppor, or bck up, he mi ides. Sudes should use he secio s six blue hedigs for he firs level of heir oulie d use he gree hedigs where pproprie. Supporig deils should iclude he boldfce vocbulry erms d key coceps. Guided Redig d Sudy Workbook/Chper

6 Secio 24 2 Seed Developme d Germiio (pges ) TEKS FOCUS: 13A Sigificce of srucurl dpios of pls o heir eviromes; 13B Mehods of developme of pls; TEKS SUPPORT: 7B Nurl selecio i dpio This secio explis how seeds develop d re dispersed. I lso describes fcors h ifluece he dormcy d germiio of seeds. Seed d Frui Developme (pge 618) 1. Wh is frui? I is ripeed ovry h cois giosperm seeds. 2. Wh hppes s giosperm seeds mure fer ferilizio is complee? The ovry wlls hicke o form frui h ecloses he developig seeds. 3. The ouer lyer of he seed h proecs he embryo d is food supply is clled () seed co. 4. Is he followig seece rue or flse? Boh cucumbers d omoes re fruis. rue 5. Circle he leer of ech seece h is rue bou fruis.. As seeds mure, he ovry wlls hicke o form frui. b. Fruis c crry oe seed or severl seeds. c. A frui is ripeed ovry h ecloses seed or seeds. d. The ier wll of he ovry ever ouches he seed. Seed Dispersl (pge 619) 6. Why re seeds h re dispersed by imls ypiclly coied i fleshy, uriious fruis? These fruis provide uriio for he iml d lso help he pl disperse is seeds. 7. Circle he leer of why seeds dispersed by imls re covered wih ough coigs.. The seeds eed o be ble o flo o wer. b. The coigs eble he seeds o pss hrough iml uhrmed. c. The seeds eed o be digesed by he iml h es hem. d. The coigs preve he seeds from beig ee by imls. 8. Why re seeds dispersed by wid or wer ypiclly lighweigh? Beig lighweigh llows he seeds o be crried i he ir or o flo o he surfce of he wer. 9. How re he seeds of sh d mple rees dispersed log disces from he pre pls? Their seeds re ecsed i wiglike srucures h spi d wirl s hey re relesed, helpig hem glide cosiderble disces. 418 Guided Redig d Sudy Workbook/Chper 24

7 10. Wh dpio does cocou seed hve h helps is dispersl? The seed cois liquid edosperm lyer h mkes cocou buoy eough o flo i se wer wihi is proecive coig for my weeks. Seed Dormcy (pge 620) 11. Wh is dormcy? I is period i which he pl embryo is live bu o growig. 12. Wh re wo eviromel fcors h c cuse seed o ed dormcy d germie?. Temperure b. Moisure 13. Wh re wo purposes served by seed dormcy?. I c llow for log-disce dispersl. b. I c llow seeds o germie uder idel growh codiios. 14. Is he followig seece rue or flse? Some pie ree seeds remi dorm uil he high emperures geered by fores fire cuse coes o ope d relese he seeds. rue Seed Germiio (pge 621) 15. Wh is seed germiio? Seed germiio is he erly growh sge of he pl embryo. 16. Complee he flowchr bou seed germiio. Whe seed germies, i bsorbs wer. The wer cuses he edosperm o swell, which crcks ope he seed co. Through he crcked seed co, he youg roo begis o grow. 17. Circle he leer of ech seece h is rue bou seed germiio.. I some dicos, he coyledos proec he firs folige leves. b. I mos moocos, he coyledo remis wihi he seed. c. I some dicos, he coyledos remi below he soil d provide food for he seedlig. d. I mos moocos, he coyledo emerges bove groud o proec he leves. Guided Redig d Sudy Workbook/Chper

8 Secio 24 3 Pl Propgio d Agriculure (pges ) TEKS FOCUS: 1B Mke wise choices i he use of resources d he disposl or recyclig of merils; TEKS SUPPORT: 6E Compre miosis d meiosis wih regrd o sexul d sexul reproducio This secio describes how sexul reproducio occurs i pls. I lso describes pl propgio d ideifies which crops provide he mjor food supply for hums. Vegeive Reproducio (pges ) 1. The mehod of sexul reproducio used by my flowerig pls is clled vegeive reproducio. 2. Wh does vegeive reproducio eble sigle pl h is well dped o he evirome o do? I ebles he pl o produce my offsprig geeiclly ideicl o iself. 3. Vegeive reproducio icludes he producio of ew pls from wh hree kids of pl srucures?. Horizol sems b. Plles c. Udergroud roos 4. Why does vegeive reproducio eble pls o reproduce very quickly? I does o ivolve polliio or seed formio. 5. Wh do spider pls produce h llows hem o reproduce vegeively? They produce plles. 6. Is he followig seece rue or flse? New pls c grow from he leves of pre pl if he leves fll o he groud d he codiios re righ. rue 7. How do srwberry pls reproduce vegeively? They sed ou log rilig sems clled solos h produce roos whe hey ouch he groud. Oce he roos re well esblished, ech solo my be broke, formig ew, idepede pl. 8. How do bmboo pls reproduce sexully? They grow log udergroud sems h c sed up ew shoos i severl plces. Pl Propgio (pge 623) 9. Wh do horiculuriss use pl propgio for? They use i o mke my ideicl copies of pls or o produce offsprig from seedless pls. 420 Guided Redig d Sudy Workbook/Chper 24

9 10. Why migh horiculuris o w pl o reproduce sexully by seeds? The growers w o void he vriio h would resul if he pl reproduced sexully. 11. Circle he leer of wh cuig mus hve o form roos whe plced i rooig mixure.. Severl solos c. Buds coiig merisemic issue b. A proo d. Buds wihou merisemic issue 12. Whe piece of sem or lerl bud is cu from pre pl d ched o oher pl, wh re he cu piece d he pl o which i is ched clled? The cu piece is clled scio, d he pl o which i is ched is clled he sock. 13. Whe sems re used s scios, he process is clled grfig. 14. Wh is he process clled whe buds re used s scios? Buddig 15. I wh kid of cses do growers use grfig d buddig? Grfig d buddig re used o reproduce seedless pls d vrieies of woody pls h do o produce srog roo sysems. Agriculure (pges ) 16. Circle he leer of whe evidece suggess h griculure developed i my prs of he world.. bou 1 2 millio yers go c. bou 10,000 12,000 yers go b. bou yers go d. bou 100,000 yers go 17. Wh re hree crop pls h mos people of he world deped o for he bulk of heir food supply?. Whe b. Rice c. Cor 18. The food ke from crops such s whe, rice, d cor is sored i heir seeds. 19. Wh re he four crops h 80 perce of ll U.S. cropld is used o grow? They iclude whe, cor, soybes, d hy. 20. Wh impor crops were ukow i Europe before hey were iroduced here from he Americs? Impor crops iclude cor, peus, bes, d pooes. 21. Wh re wo wys i which he efficiecy of griculure hs bee improved?. Oe wy is he selecive breedig of crop pls. b. A secod wy is improvemes i frmig echiques. 22. How hs he use of pesicides d ferilizers ffeced crop yields? They hve bee resposible for drmic improvemes i crop yields. Guided Redig d Sudy Workbook/Chper

10 WordWise Aswer he quesios by wriig he correc vocbulry erms i he blks. Use he circled leer i ech word o fid he hidde word. The, wrie defiiio for he hidde word. Wh is he process i which sems re used s scios? g Wh re he flower prs h re brighly colored d re foud jus iside he sepls? p Wh re he florl prs clled h produce he femle gmeophyes? c Wh does her d filme ogeher mke up? s Wh is he sicky porio of he syle where polle gris frequely ld? s Wh is period durig which pl embryo is live bu o growig? d Which pr of flower is where hploid mle gmeophyes re produced? Wh is log, rilig pl sem h produces roos whe i ouches he groud? s Wh is he process whe buds re used s scios? b I flower, wh pr cois oe or more ovules? o r e o u v r i r o d f p m g m h l d r l e e m e o i y i s l r s c g g y Wh is he food-rich issue h ourishes seedlig s i grows? e d o s p e r m g e r m i i o Hidde Word: Defiiio: The erly growh sge of pl embryo 422 Guided Redig d Sudy Workbook/Chper 24