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Bi 2: M Thc Vt---------------------------

Mctiu hctp:

1. Trnh byc khi nim v cc cch phnloi m thc vt.

2. Trnh by cu to, chc nng v hnh thica 6 loi: m phn sinh; m mm; m chech; m nng ; m dn v m tit.

3. Trnh byc vai tr v ng dng ca mthc vt trong ngnh Dc

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1. i c-ng1.1. Khi nim1.2. Phn loi m

2. Cc loi m2.1. M phn sinh2.2. M mm2.3. M che ch

2.4. M nng 2.5. M dn2.6. M tit

3. Nui cy

m v ng dng

M Thc Vt---------------------------

http://khai%20niem.ppt/http://cac%20cach%20phan%20loai%20mo.ppt/http://mo%20phan%20sinh.ppt/http://mo%20mem.ppt/http://mo%20che%20cho.ppt/http://mo%20nang%20do.ppt/http://mo%20dan.ppt/http://mo%20tiet.ppt/http://nc%20mo%2C%20ung%20dung.ppt/http://nc%20mo%2C%20ung%20dung.ppt/http://nc%20mo%2C%20ung%20dung.ppt/http://mo%20tiet.ppt/http://mo%20dan.ppt/http://mo%20nang%20do.ppt/http://mo%20che%20cho.ppt/http://mo%20mem.ppt/http://mo%20phan%20sinh.ppt/http://cac%20cach%20phan%20loai%20mo.ppt/http://khai%20niem.ppt/

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M thc vt---------------------------------------

1.1. Khi nim

M (tissues) l t chc ca cc t bo thucmt hoc mt s loi t bo c ngun gc vchc phn chung

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1.2. Cc cch phn loi m

Theo kch th-c: m mm , m t bo hinhthoi

Theo ngun gc: m phn sinh, m vnh vin

Theo chc phn sinh l: m phn sinh, mdinh d-ng (m mm), m che ch, m nng ,m dn v m tit.

M thc vt---------------------------------------

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- Sinh vin t c

M MM

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-Khi nim: l m -c cu to binhng t/b non, mng mng bng

cellulose, khng cha cht d tr,khng h nhng khong gian bo.

- Tnh cht: Tb phn chia rt nhanh tocc th m khc.

M phn sinh

---------------------------

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- Phn loi:

+ M phn sinh ngn+ M phn sinh ging: h la(Poaceae)

+ M phn sinh bn:(i) Tng pht sinh bn-lc b,(ii) Tng pht sinh libe - g.

M phn sinh

---------------------------

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* Tng phtsinh: libe g

cp II (tngsinh tr)

M Phn sinh---------------------------

* Tng pht sinhngoi: bn lc b(tng sinh v)

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- Khi nim: l nh ng Tb xp st nhau, mng

bin thnh 1 cht khng thm n-c v khngkh.- Chc nng: che ch v bo v cc b

phn ca cy chng li tc dng c hi ca mitr-ng hay s xm nhp ca cc ging k sinh.

M che ch

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- Phn loi:

* Biu b:

+ Cu to bi 1 lp Tb sng, bao bc phnnon ca thn cy.

+ Mng ngoi ca Tb biu b ho cutin

to thnh tng cutin khng thm n-c v khngkh.+ Trn biu b c l kh v lng

M che ch

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Biu b

M che ch

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(1) L kh: l nhng l thng trong biub, dng trao i kh.

- Mi l kh cu to bi 2 Tb hnh ht u,mang nhiu lp lc,- L kh th-ng i km vi 1,2,3,4 Tb bn chnh dng khc hn Tb biu bxung quanh

(kim nghim dliu).- Mt mm2 mt l trung bnh mang 300 l kh

M che ch

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Biu bv l khA. T bo biu b

c cc l kh

B. L kh nhn ttrn xungC. L kh nhn theo

chiu ct dc

ca l1. 2 t bo hnhthn

2. Lp lc3. T bo bn

M che ch

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A. Kiu hn bo (maol-ng)

B. Kiu d bo (thp t)C. Kiu song bo (c ph)D. Kiu trc bo (cm

ch-ng)

B

C

D

D

A

M che ch

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(2) Lng: l nhng Tb biu bmc di ra ngoi tng c-ng vai tr bo v hoc gim bt sthot hi n-c.

- Lng n bo: to ta, ma...- Lng a bo: m tam th, ci xay...- Lng hnh thoi (1 t bo): h cc..

- Lng to trn (u a bo): kh sm nam...- Lng nga- 1 t bo: (cha a. formic v ungn c silic nn dn, d g y)

M che ch

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Cc loi lng che ch

1. Lng n bo2,3. Lng a bo4,5,7. Lng to trn6. Lng hnh thoi

M che ch

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L v1. Lp bn ho

suberin

2,3. Tng phtsinh bn lc b5. T bo b sung

M che ch* Bn: Cu to bi nhiu t bo cht, bao bcquanh phn gi ca cy, mng t bo bin thnh chtbn (suberin) khng thm n-c v kh

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M dy

A. M dy gcB. M dy phin

C. M dy xp

M nng

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(2) M cng: Tb cht, mng dy ho g t nhiu.

Phn loi: 3 loi- Tb m cng: hnh khi nhiu mt, c

vn tng tr-ng ng tm: l, na, mn .- Th cng: tb m cng ng ring r,

t-ng i ln: l ch, cung l sng- Si m cng: tb di hnh thoi, mng

dy ho g t nhiu: si v (si v tht, siv tr, si libe); si g (si gai, ay, tra lmchiu)

M nng

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T bo m cng

M nng

Th cng

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Cch phn phi m nng trong cy

theo quy lut c hc

M nng

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- Khi nim: cu to bi nhng tb di xp nivi nhau thnh tng d y dc song song vitrc c quan

- Chc nng: dng dn nha+ Nha nguyn+ Nha luyn

- Phn loi: 2 loi m dn+ G (xylem): dn nha nguyn+ Libe (pholem): dn nha luyn.

M Dn

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(1) G: l m phc tp gm c 3 phn: (b nhumxanh)- Mch ngn v mch thng:

+ Tb c vch ngn ngang, ta gi l mchngn+ Cc vch ngn bin mt to thnh nhng ng

thng sut, ta gi l mch thng (mch g).

- Si g: tb cht hnh thoi di, c mng dy ho gc ng nh trao i- M mm g: tb sng lm nhim v d tr, c th,cn c cc tia rut

M Dn

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Cc kiu mch trn lt ctdcA. Vng xonB . Xon

B. ThangH. L

M Dn

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Mch ngn

1. M ch xo n2. M ch hnh thang

3. M ch ng n chm

hnh ng tin

M Dn

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Cc yu t g:

1. Mch l2. Mch xon3. Mch ngn xon4, 5. Mch ngn l,6, 7. Si liber8, 9. M mm tu

M Dn

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M Dn

S tin ho ca thng l mch(t 1 n 8 l cc mch c l t dn, tin n thng l hon ton)

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(2) Libe: m phc tp gm: mch ry, tb km, silibe v m mm libe.

* Mch ry: tb sng di, vch ngang c nhiu lthng nh- ci ry

* Tb km: tb sng, hnh thnh cc men gip mchry thc hin cc phn ng sinh ho trong mch

* M mm libe: tb sng, cha cht d tr.* Si libe: tb hnh thoi di c th ho g nng

M Dn

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ng ry ca thn bng

A. Ct ngang

B. Ct dc1. ng ry2. Phin ry3. Mng sinh cht4. T bo km5. So

M Dn

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H. 76 Siu cu trc ca phinry cy B ng

H. 77. Mt phn ng ry cacy nho (Vitis vinifera)

1. Ct dc

2. Nhn b mt phin

M Dn

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Qu trnh pht trin ca ng ry

M Dn

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Cc kiu b liber- g

1. B chng (Hnh: kn; Ngc lan:h)

2. B chng kp: trc o, sim, ..)

3,4. B ng tm: thin mn

5. B lun phin: r thin mn

M Dn

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B mch chng kn trong cy ng

1. M mm2. M cng

3. Nguyn liber

4. Hu liber

5. M mm g6. Mch l (nguyn mc)

7. Mach xon

8. Mch vng

9. Khoang cha kh

M Dn

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B mch chng kp ct ngang thnb ng (Cucurbita pepo)

1. M mm

2. Lier ngoi

3. T-ng tng4. G cp 2

5. M mm g

6. Liber trong

M Dn

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Khi nim

Cu to bi nhng t bo sng c mngmng bng cellulose tit ra nhng cht mng-i ta coi nh- l cht cn b ca cy vcy khng dng n na nh-: tinh du,nha, gm, tanin...

M tit

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- Biu b tit: nh- cc biu b tit ra chtthm biu b hoa Hng, hoa Nhi..; cc

tuyn mt ca hoa cng thuc loi ny

M tit

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Lng tit: mi lng tit c mt u v mt chn

c th l n bo hay a bo

M tit

Mt s loi lng tit

a bo1, 2. Lng titu a bo, chn abo; 3, 4, 6. Lng tit

u a bo, chn nbo; 5. Lng tit cuto bi 8 t bo xptr mt mt phng

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T bo tit, ngtit thncy trukhng (Piperbetle)

A. Thn ct ngangB. Tb tit

C. ng tit

T bo tit: l cc t bo ring l ri rc trong m

mm, ng nhng cht do chnh t bo tit ra

M tit

M tit

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Ti tit, ng tit: l cc l hng hnh cu (ti)

hay hnh tr (ng) bao bc bi cc t bo tit vng cc cht do cc t bo tit ra

M tit

- Kiu phn sinh: hsim: bch n, trm,

inh h-ng...- Kiu dung sinh: hcam: cam, chanh,qut, b-i...

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Vai tr v ng dng ca m thc vt trong ngnh Dc

Sinh vin t c

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Nui cy m v ng dng trong nghnh d-c

Nguyn tc: cy v khun mt mu m thc vt trongmi trng dinh dng thch hp c b sung chtkch thch.

Cng dng:

NC m t bo thc vt pht trin trn mi trng c nh rSn xut mt lng ln cy con c c im gen nhcy m.

NC s phn ho t bo thnh cc m v to thnh ccc th thc vt, cy qu c ng dng trong nghnhThc t hin nay i vi pht trin dc liu