Đề KT 1 tiết Sinh 12 CB

Sở GD & ĐT Hà Giang
Trờng THPT Mèo Vạc
đề kiểm tra 1 tiết
Môn: sinh học lớp 12
Năm học: 2008 2009
Thời gian làm bài: 45 phút
Họ và tên:.
Lớp:12A

Điểm bằng số:

Điểm bằng chữ:.

I/ Phần trắc nghiệm:
Em hãy khoanh tròn vào đáp án đúng trong các câu sau (8 câu = 4điểm):
Cõu 1: Nhõn t no sau õy khụng lm thay i tn s alen ca qun th ?
A. t bin v CLTN . B. Giao phi khụng ngu nhiờn
C. Di nhp gen . D. Cỏc yu t ngu nhiờn.
Cõu 2: Tin hoỏ tin sinh hc xy ra nh th no ?
A. Cỏc i phõn t ( Pr, L, axit nuclờic ) trong nc -> to git nh li ti cú mng Lipit
bao bc -> CLTN ->TB s khai -> CLTN -> TB sng u tiờn.
B. Cỏc i phõn t ( Pr, L, axit nuclờic ) trong nc -> CLTN ->TB s khai -> CLTN
-> TB sng u tiờn.
C. Cỏc i phõn t ( Pr, L, axit nuclờic ) trong nc -> CLTN ->TB s khai -> CLTN
-> sinh vt n bo u tiờn.
D. Cỏc i phõn t ( Pr, L, axit nuclờic ) trong nc ->to git nh li ti cú mng Lipit
bao bc ->CLTN ->TB s khai -> CLTN -> sinh vt n bo u tiờn.
Cõu 3: Mt s loi trong quỏ trỡnh tin hoỏ li tiờu gim mt s c quan. Nguyờn nhõn
no sau õy gii thớch ỳng v hin tng ny?
A. Do mụi trng sng thay i ó to ra nhng t bin mi .
B. S tiờu gim c quan giỳp sinh vt thớch nghi tt hn .

C. Cú xu hng tin hoỏ qay v dng t tiờn.
D. Tõt c cỏc nguyờn nhõn ó nờu u ỳng.
Cõu 4: T qun th cõy 2n ngi ta to ra c qun th cõy 4n. Qun th cõy 4n cú
th xem l mt loi mi vỡ
A. Qun th cõy 4n cú s khỏc bit vi qun th cõy 2n v s lng NST.
B. Qun th cõy 4n khụng th giao phn c vi cỏc cõy ca qun th cõy 2n.
C. Qun th cõy 4n giao phn c vi cỏc cõy ca qun th cõy 2n cho ra cõy lai 3n
b bt th.
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D. Qun th cõy 4n cú cỏc c im hỡnh thỏi nh kớch thc cỏc c quan dinh dng
ln hn hn cỏc cõy ca qun th 2n .
Cõu 5: Hỡnh thnh loi mi bng dng no sau õy chm chp qua nhiu giai on
trung gian chuyn tip?
A. Cỏch li a lớ. B. Cỏch li tp tớnh. C. Cỏch li sinh thỏi. D. Lai xa kốm a bi hoỏ
Cõu 6: Ti sao lỳc u ta dựng mt loi hoỏ cht thỡ dit c ti trờn 90% sõu t hi
bp ci nhng sau nhiu ln phun thuc thỡ hiu qu dit sõu ca thuc li gim dn ?
A. Kh nng khỏng thuc do nhiu gen qui nh ->cng nhiu thuc cng chng thuc
tt.
B. Kh nng khỏng thuc do nhiu gen qui nh. Di tỏc ng ca CLTN cỏc gen
khỏng thuc c tớch lu li cng nhiu trong c th -> Kh nng khỏng thuc ngy
cng hon thin.
C. Gen khỏng thuc c tớch lu li cng nhiu trong c th -> Kh nng khỏng thuc
ngy cng hon thin .
D. Di tỏc ng ca CLTN cỏc gen khỏng thuc c tớch lu li cng nhiu trong c
th -> cng nhiu thuc cng chng thuc tt.
Cõu 7: í no sau õy l vớ d v cỏch li trc hp t?
A. Lai gia nga vi la to ra con la khụng cú kh nng sinh sn.
B. Hai loi vt tri chung sng trong cựng khu vc a lớ v lm t cnh nhau, khụng
bao gi giao phi vi nhau.
C. Trng nhỏi th tinh bng tinh trựng cúc thỡ hp t khụng phỏt trin.

D. Cu giao phi vi dờ cú th tinh nhng hp t b cht ngay.
Cõu 8: Quỏ trỡnh hỡnh thnh loi mi thng gn lin vi:
A. Quỏ trỡnh hỡnh thnh qun th thớch nghi. B. Quỏ trỡnh t bin t nhiờn.
C. Quỏ trỡnh chn lc t nhiờn. D. S xut hin qun th mi.
II/ phần tự luận (2 cõu = 6im):
1) Câu 1 (3điểm): Trình bày đặc điểm của các nhân tố tiến hoá?
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C©u 2 (3®iÓm): Tr×nh bµy c¬ chÕ h×nh thµnh loµi nhê c¬ chÕ lai xa vµ ®a béi ho¸?
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