NECO 2001 Biology · Question 16

The tissue which carries organic food from its site of production to all other parts of the plant is called the

Options

  1. A.Cambium
  2. B.Epidermis
  3. C.Phloem
  4. D.Sclerenchyma
  5. E.Xylem

Answer: C. Phloem

Explanation written with AI and checked against the answer key

Step 1: Analyze the question The question asks which plant tissue transports organic food (e.g., sucrose and amino acids made during photosynthesis) from where it is made (usually the leaves) to other parts of the plant.

Step 2: Explain the concept Plants have two main transport (vascular) tissues:

  • Xylem carries water and dissolved mineral salts upward from the roots to the leaves. It also gives support.
  • Phloem carries manufactured food (organic substances) from the leaves, the site of production, to storage organs and growing regions such as roots, fruits and shoot tips. This process is called translocation. Phloem is made up of sieve tubes, companion cells and phloem parenchyma.

Step 3: Check each option

  • A. Cambium: a meristematic tissue that produces new xylem and phloem cells (secondary growth). It does not transport food.
  • B. Epidermis: the outer protective layer of the plant. It does not transport food.
  • C. Phloem: transports organic food to all parts of the plant. ✔
  • D. Sclerenchyma: a supporting tissue with thick, lignified walls. It does not transport food.
  • E. Xylem: transports water and minerals, not organic food.

Step 4: Answer The tissue is the phloem, which is option C.

Exam tip: Remember it with this link: Phloem = Produced food (Photosynthesis products), while Xylem = water (think "Xylem, eXtracts water from soil"). If a question mentions "food," "sugar," "translocation" or "sieve tubes," the answer is phloem.

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