
DSE2021(I)(B)(7)
Authored by Leung Kin梁志堅老師
Biology
2nd Grade
Used 1+ times

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4 questions
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1.
DROPDOWN QUESTION
5 mins • 1 pt
(我認為應接受開花會產生雄配子和雌配子,減數細胞分裂使配子的遺傳組合各有不同,而受精時又是隨機的,導致後代變異增加,有些後代擁有的特徵較適應惡劣的環境。)可是marking 不接受這思路,而是用了結出果實如何增加植物物種的生存機會。
答案:
開花導致 (a) 。
(加上以下其中一組:)
果實會 (b) ,使後代 (c) 的惡劣環境。(或)
種子在惡劣環境下 (d) ,待 (e) 才萌發。
2.
DROPDOWN QUESTION
5 mins • 1 pt
《本題要考科學探究方法的步驟:觀察、有需要時提出假說)、辨識不同變量、進行公平測試、預測結果、實驗結果、結論(結果支持或反對假說)》
答案:蜜蜂 (a) 與 (b) 兩者都會 (c) 開花期,而且縮短的 (d) 。
3.
DROPDOWN QUESTION
5 mins • 1 pt
(本題要做兩次比較,分別是比較機械性損害的植物和沒有損害的植物的開花日數;第二部分是比較機械性損害的植物和蜜蜂損害的植物的開花日數)
答案:經 (a) 的植物的開花所需日數明顯少於 (b) 的植物,施加機械性壓力能 (c) 。
(d) 的開花所需日數比機械性損害的植物少,這表示除了蜜蜂的機械性損害之外 (e) 。
4.
DROPDOWN QUESTION
5 mins • 1 pt
建巢對 (a) 造成更多 (b) ,確保能 (c) ,確保有 (d) 給蜜蜂。
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