Question 6 of 19beginner💡 UnderstandMCQ1 mark

If a plant is unable to transport food from leaves to roots which tissue is malfunctioning?

Exercise: Revise, Reflect, Refine | Q: 2 | (Page 17)
For More Understanding

Explanation

Option (ii) Phloem is the correct answer. According to the provided text, phloem consists of sieve tubes, companion cells, phloem parenchyma, and phloem fibres. The sieve tubes within the phloem are specifically responsible for transporting food from leaves to other parts of the plant, including the roots. Therefore, if a plant is unable to transport food from its leaves to its roots, the phloem tissue is malfunctioning. Xylem transports water and minerals, not food.

Solution Steps

  1. Step 1: Identify the function of each tissue mentioned in the options based on the context. Xylem transports water and minerals; Sclerenchyma provides strength; Epidermis protects and reduces water loss.

  2. Step 2: Locate the tissue responsible for food transport. The context states that sieve tubes, which are a component of phloem, transport food from leaves to other parts of the plant.

  3. Step 3: Conclude that if food transport from leaves to roots fails, the malfunctioning tissue must be phloem, which corresponds to option (ii).

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