{"common":{"save":0,"post_id":"9858","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8644","post_id":"9858","mon_id":"1159850","chapter_id":"1160280","question":"<p data-pm-slice=\"0 0 []\">Câu nào sau \u0111ây không ph\u1ea3i vai trò h\u01b0\u1edbng tr\u1ecdng l\u1ef1c c\u1ee7a cây?<\/p>","options":["A. \u0110\u1ec9nh thân sinh tr\u01b0\u1edfng theo h\u01b0\u1edbng cùng chi\u1ec1u v\u1edbi s\u1ee9c hút c\u1ee7a tr\u1ecdng l\u1ef1c g\u1ecdi là h\u01b0\u1edbng tr\u1ecdng l\u1ef1c âm","B. H\u01b0\u1edbng tr\u1ecdng l\u1ef1c giúp cây c\u1ed1 \u0111\u1ecbnh ngày càng v\u1eefng ch\u1eafc vào \u0111\u1ea5t, r\u1ec5 cây hút n\u01b0\u1edbc cùng các ion khoáng t\u1eeb \u0111\u1ea5t nuôi cây.","C. \u0110\u1ec9nh r\u1ec5 cây sinh tr\u01b0\u1edfng vào \u0111\u1ea5t g\u1ecdi là h\u01b0\u1edbng tr\u1ecdng l\u1ef1c d\u01b0\u01a1ng ","D. Ph\u1ea3n \u1ee9ng c\u1ee7a cây \u0111\u1ed1i v\u1edbi h\u01b0\u1edbng tr\u1ecdng l\u1ef1c \u0111\u01b0\u1ee3c g\u1ecdi là h\u01b0\u1edbng tr\u1ecdng l\u1ef1c hay h\u01b0\u1edbng \u0111\u1ea5t"],"correct":"1","level":"2","hint":"<p>Xem xét hi\u1ec7n t\u01b0\u1ee3ng nào không liên quan \u0111\u1ebfn vi\u1ec7c r\u1ec5 ho\u1eb7c thân \u0111i\u1ec1u ch\u1ec9nh v\u1ecb trí theo tr\u1ecdng l\u1ef1c.<\/p>","answer":"<p>\u0110áp án: <span style=\"color:#16a085;\"><strong>A. \u0110\u1ec9nh thân sinh tr\u01b0\u1edfng theo h\u01b0\u1edbng cùng chi\u1ec1u v\u1edbi s\u1ee9c hút c\u1ee7a tr\u1ecdng l\u1ef1c g\u1ecdi là h\u01b0\u1edbng tr\u1ecdng l\u1ef1c âm<\/strong><\/span><\/p><ul> <li data-end=\"165\" data-start=\"41\"><p data-end=\"165\" data-start=\"43\"><strong data-end=\"65\" data-start=\"43\">H\u01b0\u1edbng tr\u1ecdng l\u1ef1c âm<\/strong> ngh\u0129a là sinh tr\u01b0\u1edfng <strong data-end=\"96\" data-start=\"87\">ng\u01b0\u1ee3c<\/strong> chi\u1ec1u v\u1edbi s\u1ee9c hút c\u1ee7a tr\u1ecdng l\u1ef1c (ví d\u1ee5: thân, cành v\u01b0\u01a1n lên trên).<\/p><\/li> <li data-end=\"251\" data-is-last-node=\"\" data-start=\"166\"><p data-end=\"251\" data-is-last-node=\"\" data-start=\"168\">Trong câu A l\u1ea1i nói "cùng chi\u1ec1u" v\u1edbi s\u1ee9c hút c\u1ee7a tr\u1ecdng l\u1ef1c, nên sai v\u1ec1 khái ni\u1ec7m.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-08-09 14:23:26","option_type":"txt","len":3},{"id":"8645","post_id":"9858","mon_id":"1159850","chapter_id":"1160280","question":"<p data-pm-slice=\"0 0 []\">Nh\u1eadn xét v\u1ec1 \u1ee9ng \u0111\u1ed9ng không sinh tr\u01b0\u1edfng, \u0111i\u1ec1u không \u0111úng là<\/p>","options":["A. có c\u01a1 ch\u1ebf ch\u1ee7 y\u1ebfu là do s\u1ef1 bi\u1ebfn \u0111\u1ed5i hàm l\u01b0\u1ee3ng n\u01b0\u1edbc trong t\u1ebf bào chuyên hoá.","B. bi\u1ec3u hi\u1ec7n nhanh h\u01a1n so v\u1edbi \u1ee9ng \u0111\u1ed9ng sinh tr\u01b0\u1edfng,","C. ch\u1ec9 x\u1ea3y ra \u1edf các c\u01a1 quan có c\u1ea5u t\u1ea1o d\u1eb9t. ","D. có vai trò thích nghi \u0111a d\u1ea1ng d\u1ed1i v\u1edbi s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a môi tru\u1eddng s\u1ed1ng."],"correct":"3","level":"2","hint":"<p>Ki\u1ec3m tra xem nh\u1eadn xét có \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1eadn \u0111\u1ed9ng liên quan \u0111\u1ebfn sinh tr\u01b0\u1edfng hay không<\/p>","answer":"<p>\u0110áp án: <span style=\"color:#1abc9c;\"><strong>C. ch\u1ec9 x\u1ea3y ra \u1edf các c\u01a1 quan có c\u1ea5u t\u1ea1o d\u1eb9t.<\/strong><\/span><\/p><ul> <li data-end=\"180\" data-start=\"41\"><p data-end=\"180\" data-start=\"43\">\u1ee8ng \u0111\u1ed9ng <strong data-end=\"73\" data-start=\"52\">không sinh tr\u01b0\u1edfng<\/strong> x\u1ea3y ra \u1edf nhi\u1ec1u lo\u1ea1i c\u01a1 quan khác nhau (lá, cánh hoa, tua cu\u1ed1n…), <strong data-end=\"152\" data-start=\"139\">không ch\u1ec9<\/strong> \u1edf c\u01a1 quan có c\u1ea5u t\u1ea1o d\u1eb9t.<\/p><\/li> <li data-end=\"333\" data-is-last-node=\"\" data-start=\"181\"><p data-end=\"333\" data-is-last-node=\"\" data-start=\"183\">Các \u0111\u1eb7c \u0111i\u1ec3m còn l\u1ea1i (A, B, D) \u0111\u1ec1u \u0111úng: c\u01a1 ch\u1ebf ch\u1ee7 y\u1ebfu là thay \u0111\u1ed5i hàm l\u01b0\u1ee3ng n\u01b0\u1edbc, ph\u1ea3n \u1ee9ng nhanh, và giúp cây thích nghi linh ho\u1ea1t v\u1edbi môi tr\u01b0\u1eddng<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-08-09 14:24:14","option_type":"txt","len":3},{"id":"8646","post_id":"9858","mon_id":"1159850","chapter_id":"1160280","question":"<p data-pm-slice=\"0 0 []\">Tác \u0111\u1ed9ng nào c\u1ee7a auxin d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 h\u01b0\u1edbng \u0111\u1ed9ng c\u1ee7a thân và r\u1ec5 cây?<\/p><p>1. Kích thích s\u1ef1 sinh tr\u01b0\u1edfng giãn c\u1ee7a t\u1ebf bào.<\/p><p>2. T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 t\u1ed5ng h\u1ee3p prôtêin c\u1ee7a t\u1ebf bào.<\/p><p>3. T\u0103ng t\u1ed1c \u0111\u1ed9 phân chia c\u1ee7a t\u1ebf bào.<\/p><p>4. Làm t\u1ebf bào lâu già.<\/p>","options":["A. 1,3","B. 1,2,4.","C. 3 ","D. 3,4."],"correct":"2","level":"2","hint":"<p>Liên quan \u0111\u1ebfn tác d\u1ee5ng c\u1ee7a auxin lên t\u1ebf bào, suy ngh\u0129 v\u1ec1 quá trình sinh tr\u01b0\u1edfng.<\/p>","answer":"<p>\u0110áp án: <strong>B. 1,2,4.<\/strong><\/p><ul> <li data-end=\"174\" data-start=\"48\"><p data-end=\"174\" data-start=\"50\"><strong data-end=\"59\" data-start=\"50\">Auxin<\/strong> gây <strong data-end=\"78\" data-start=\"64\">h\u01b0\u1edbng \u0111\u1ed9ng<\/strong> b\u1eb1ng cách <strong data-end=\"126\" data-is-only-node=\"\" data-start=\"89\">kích thích s\u1ef1 giãn dài c\u1ee7a t\u1ebf bào<\/strong> (1) \u1edf phía t\u1ed1i ho\u1eb7c phía xa ngu\u1ed3n kích thích.<\/p><\/li> <li data-end=\"295\" data-start=\"175\"><p data-end=\"295\" data-start=\"177\">Auxin <strong data-end=\"214\" data-start=\"183\">t\u0103ng c\u01b0\u1eddng t\u1ed5ng h\u1ee3p protein<\/strong> (2), nh\u1ea5t là enzym liên quan \u0111\u1ebfn n\u1edbi l\u1ecfng thành t\u1ebf bào → giúp t\u1ebf bào giãn dài.<\/p><\/li> <li data-end=\"383\" data-start=\"296\"><p data-end=\"383\" data-start=\"298\">Auxin còn <strong data-end=\"334\" data-start=\"308\">làm ch\u1eadm quá trình già<\/strong> c\u1ee7a t\u1ebf bào (4) → duy trì kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng.<\/p><\/li> <li data-end=\"569\" data-is-last-node=\"\" data-start=\"384\"><p data-end=\"569\" data-is-last-node=\"\" data-start=\"386\">Tác \u0111\u1ed9ng <strong data-end=\"427\" data-start=\"395\">t\u0103ng t\u1ed1c \u0111\u1ed9 phân chia t\u1ebf bào<\/strong> (3) ch\u1ee7 y\u1ebfu liên quan \u0111\u1ebfn sinh tr\u01b0\u1edfng \u1edf mô phân sinh và tác d\u1ee5ng c\u1ee7a cytokinins\/ch\u1ea5t \u0111i\u1ec1u hòa khác, không ph\u1ea3i c\u01a1 ch\u1ebf chính c\u1ee7a h\u01b0\u1edbng \u0111\u1ed9ng<\/p><\/li><\/ul>\\n","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-08-09 14:27:53","option_type":"txt","len":0}]}