bai 42 lop hai la mam va lop mot la mam
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CHAO MNG CAC THY C N D GI
LP: 6
MN: SINH VT
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Kim tra bai cu
Xc nh cc kiu r, thn, gn l, ht cc hinh sau:
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Tun 27
Tit 53
Bai 42. LP HAI LA MM VA LP MT LA MM
I/ Cy hai la mm va cy mt la mm
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Quan st tranh v mu vt hon thnh bng sau:
Tn cyRThnKiu gn l- Co mn tru Da cn- R qut La- Ng- Rau ma- Bng- i................. -
Quan st tranh v mu vt hon thnh bng sau:
Tn cyRThnKiu gn l- Co mn tru Da cn- R qut La- Ng- Rau ma- Bng- i................. - Tn cyRThnKiu gn l- Co mn tru- Chum- Co- Song song Da cn- Cc- C- Mng- R qut- Chm- C- Song song La- Chm- C- Song song- Ng- Chm- C- Song song- Rau ma- Coc- Bo- Mng- Bng- Cc- G- Mng- i- Cc- G- Mng........................
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Tn cyRThnKiu gn lThuc lpMt l mmHai l mm- Co mn tru- Chum- Co- Song song Da cn- Cc- C- Mng- R qut- Chm- C- Song song La- Chm- C- Song song- Ng- Chm- C- Song song- Rau ma- Cc- Bo- Mng- Bang- Cc- G- Mng- i- Cc- G- Mng............... - c im CY Mt l mmCY Hai l mmKiu rGn lThnS canh hoa
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CY 2 LA MM
CY 1 LA MM
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R chum
R coc
Song song hoc hinh cung
Hinh mang
Thn co hoc thn ct
Thn g hoc thn leo, thn bo
3 hoc 6 canh hoa
4 hoc 5 canh hoa
S l mm ca phi
c im CY Mt l mmCY Hai l mmKiu rGn lThnS canh hoa -
CY 2 LA MM
CY 1 LA MM
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R chum
R coc
Song song hoc hinh cung
Hinh mang
Thn co hoc thn ct
Thn g hoc thn leo, thn bo
3 hoc 6 canh hoa
4 hoc 5 canh hoa
Phi co 1 la mm
Phi co 2 la mm
S l mm ca phi
c im CY Mt l mmCY Hai l mmKiu rGn lThnS canh hoa - Cy mt la mm: co r chum, thn co hoc thn ct, gn la hinh cung hoc
song song, va hoa thng 4 hoc 5 canh
VD: lua, ng, re quat,.
Cy hai la mm: co r coc, thn g, thn co hoc thn leo, gn la hinh mang, va hoa thng co 3 hoc 6 canhVD: Da can, rau ma, cai, bang,.
Bai 42. LP HAI LA MM VA LP MT LA MM
I/ Cy hai la mm va cy mt la mm
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Bai 42. LP HAI LA MM VA LP MT LA MM
I/ Cy hai la mm va cy mt la mm
II/ c im phn bit gia lp hai la mm va lp mt la mm
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R chum
R coc
Song song hoc hinh cung
Hinh mang
Thn co hoc thn ct
Thn g hoc thn leo, thn bo
3 hoc 6 canh hoa
4 hoc 5 canh hoa
Phi co 1 la mm
Phi co 2 la mm
c im phn bit gia lp mt la mm va lp hai la mm la gi?
c im CY Mt l mmCY Hai l mmKiu rGn lThnS canh hoaS l mm ca phi -
Bai 42. LP HAI LA MM VA LP MT LA MM
II/ c im phn bit gia lp hai la mm va lp mt la mm
c im chu yu phn bit gia lp mt la mm va lp hai la mm la s la mm cua phi. -
Bai 42. LP HAI LA MM VA LP MT LA MM
II/ c im phn bit gia lp hai la mm va lp mt la mm
c im chu yu phn bit gia lp mt la mm va lp hai la mm la s la mm cua phi. Ngoai ra con mt vai du hiu phn bit khac nh kiu r, kiu gn la, dang thn, s canh hoa,.. -
Em hy nhn bit cy Mt l mm v cy Hai l mm:
Hai l mm
Mt l mm
Ta bit thc vt ht kn rt a dng, trong thin nhin c
th gp nhng trng hp ngoi l, v d: c cy hoa khng
cnh hoc ngc li rt nhiu cnh, l ca mt vi cy Hai l
mm c khi c cc gn chnh xp hnh cung,Trong nhng
trng hp ny, nhn bit cy thuc lp no cn phi da
vo nhiu c im khc nhau ch khng th ch da vo
mt c im no .
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TRO CHI: EM L NH V CH
XANH
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1. Neu ac iem cua cay Mot la mam ?
5. Ke ten ba loai cay thuoc lp Hai la mam?
4. Ke ten ba loai cay thuoc lp Mot la mam?
ac iem cua cay Mot la mam la: re chum, gan la songsong hoac hnh cung, hoa co 3 hoac 6 canh.
2. ac iem phan biet chu yeu la so la mam cua phoi
2. ac iem chu yeu e phan biet gia lp Hai la mam
va lp Mot la mam ?
3. Co the nhan biet mot cay thuoc lp Hai la mam hay
lp Mot la mam nh nhng dau hieu ben ngoai nao?
3. Dau hieu ben ngoai: kieu re, kieu gan la, so canh hoa, dang than
6. Thc vat Hat kn gom may lp?
6. Thc vat Hat kn gom hai lp: Lp Hai la mam
va lp Mot la mam
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- Hoc bai, tra li cau hoi SGK.
- oc muc: Em co biet
- On lai cac nhom thc vat a hoc t tao en Hat kn.
- Chuan b bai 43: Khai niem s lc ve phan loai thc vat.
Hng dn HS t hoc nha:
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CHUC CAC EM HOC TT
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