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HomeCXC CSEC BiologyTranslocation of Organic Substances in Phloem
CXC · CSEC · Biology

Translocation of Organic Substances in Phloem
Practice Questions

20 CXC CSEC Biology questions on Translocation of Organic Substances in Phloem, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Translocation of Organic Substances in Phloem

Question 1 · 1 mark · Difficulty 1/3

Which cell type in phloem tissue is directly responsible for transporting organic substances?

  1. Companion cells
  2. Sieve tube elements
  3. Phloem parenchyma
  4. Phloem fibres
Show answer & explanation
✓ Answer: BSieve tube elements
Award 1 mark for sieve tube elements. These are the conducting cells of phloem, forming continuous sieve tubes through which organic substances flow. A is incorrect because companion cells support sieve tube elements metabolically but do not conduct substances themselves. C is incorrect because phloem parenchyma cells store substances but are not the main conducting cells. D is incorrect because phloem fibres provide structural support only.
Question 2 · 1 mark · Difficulty 2/3

A student conducted an experiment on a sugar cane plant by removing a complete ring of bark from the stem. After several days, swelling was observed above the ring but not below it. Which substance accumulated above the ring?

  1. Water
  2. Sucrose
  3. Mineral salts
  4. Oxygen
Show answer & explanation
✓ Answer: BSucrose
Award 1 mark for sucrose. Removing the bark removes the phloem tissue, preventing downward translocation of organic substances (mainly sucrose) produced in the leaves. This causes accumulation above the ring. A is incorrect because water moves in xylem, not phloem, and xylem remains intact. C is incorrect because mineral salts are transported upward in xylem. D is incorrect because oxygen diffuses through air spaces and is not transported in phloem.
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CXC CSEC Biology: Translocation of Organic Substances in Phloem FAQ

How many CXC CSEC Biology questions on Translocation of Organic Substances in Phloem are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Translocation of Organic Substances in Phloem for CXC CSEC Biology, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Biology?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Translocation of Organic Substances in Phloem practice with other Biology topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Translocation of Organic Substances in Phloem questions aligned to the official CXC CSEC Biology syllabus?
Every question is written against the published CXC CSEC Biology specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Translocation of Organic Substances in Phloem typically tested on CXC CSEC Biology papers?
Translocation of Organic Substances in Phloem appears across multiple question types on real CXC CSEC Biology papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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