CIE iGCSE Co-Ordinated Science B8.4 Translocation Exam Style Questions Paper 2
▶️ Answer/Explanation
Translocation in phloem transports sucrose and amino acids from sources (regions of production, e.g., leaves) to sinks (regions of use or storage, e.g., roots, fruits). Glucose is not transported in phloem; it is converted to sucrose. Thus row C is correct.
✅ Answer: (C)
✅ Answer: (C)
▶️ Answer/Explanation
Translocation is the transport of sugars made in the leaf to respiring tissues (and storage organs), and it occurs in the phloem.
Transpiration is the movement of water from the root up to the leaf, and it occurs in the xylem.
Only row C matches both of these correctly (translocation: leaf → respiring tissue via phloem; transpiration: root → leaf via xylem).
✅ Answer: (C)
Transpiration is the movement of water from the root up to the leaf, and it occurs in the xylem.
Only row C matches both of these correctly (translocation: leaf → respiring tissue via phloem; transpiration: root → leaf via xylem).
✅ Answer: (C)
▶️ Answer/Explanation
Sucrose made by the leaves is translocated in the phloem downward through the shoot.
Since the ring removes the phloem, sucrose accumulates above the ring (at P) but cannot pass below it (absent at Q).
✅ Answer: (C)
Since the ring removes the phloem, sucrose accumulates above the ring (at P) but cannot pass below it (absent at Q).
✅ Answer: (C)
▶️ Answer/Explanation
Translocation is the movement of organic substances, specifically sucrose and amino acids, through the phloem tissue. It transports these solutes from sources (where they are produced or stored) to sinks (where they are used or stored). Xylem transports water and minerals, not sucrose and amino acids.
✅ Answer: (A)
✅ Answer: (A)