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搜尋:pith

      41 下列對大黃(Ruhbarb)根莖鏡檢所發現之“星點(Star spots)”之敘述,何者錯誤?
      (A)北大黃(Rheum palmatum)之星點呈連續環狀排列,南大黃(Rheum officinale)之星點排列較不規則
      (B)北大黃(Rheum palmatum)之星點直徑大於南大黃(Rheum officinale)
      (C)星點由數個異形維管束所組成,其木部(Xylem)在形成層外側,篩部(Phloem)在形成層內側
      (D)星點僅在大黃根莖之髓部(Pith)才可發現

      編輯私有筆記及自訂標籤
      答案:B
      難度:適中
      最佳解!
      Newfie 國二上 (2017/02/22)
      (A)北大黃(Rheum palmatu☆)...


      (內容隱藏中)
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      56. In what order would you pass through tissues when moving from the pith to the epidermis in a plant possessing secondary vascular tissue?
       
      (A) primary phloem  →  primary xylem  →  secondary phloem  →  secondary xylem.
       
      (B) primary xylem → secondary xylem  → . vascular cambium  →  secondary phloem  →  primary phloem.

      (C) primary phloem  →  secondary phloem  →  secondary xylem →  primary xylem. 

      (D) secondaryxylem  →  primary xylem  →  primary phloem  →  secondary phloem. 

      (E) secondary phloem  →  primary phloem →  primary xylem  → secondary xylem.

      編輯私有筆記及自訂標籤
      答案:B
      難度:困難
      1. __________ is to xylem as __________ is to phloem.
      (A) Sclerenchyma cell; parenchyma cell
      (B) Apical meristem; vascular cambium
      (C) Vessel element; sieve-tube member
      (D) Cortex; pith
      (E) Vascular cambium; cork cambium

      編輯私有筆記及自訂標籤
      答案:A
      難度:適中

      10
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