Nyansapc

SHS Biology · Year 2

Plant Transport & Photosynthesis practice questions

Xylem and phloem transport, transpiration, translocation, and the factors affecting photosynthesis.

21 questions in this topic: 6 recall, 7 applying skills and concepts, 4 strategic thinking and 4 extended thinking. Every one carries a written explanation.

Sample questions

3 of 21 questions in this topic. Sign up to answer them and see the explanations.

  1. Question 1Extended thinking

    Compare how mass flow moves substances in the phloem versus how transpiration pull moves substances in the xylem, and explain why plants need both distinct mechanisms rather than just one.

    • aXylem transport (via transpiration pull) is mostly one-directional, moving water and minerals upward from roots to leaves, while phloem transport (via mass flow/pressure flow) is bidirectional, moving food to wherever it is needed — so a single mechanism could not serve both directional needs
    • bBoth tissues move substances in exactly the same direction using the same mechanism
    • cPhloem only moves water, and xylem only moves food
    • dPlants only need one of the two mechanisms, and the other is vestigial
  2. Question 2Skills & concepts

    Which phloem cell type is closely associated with sieve tube elements and provides metabolic assistance to them?

    • aCompanion cells
    • bXylem fibres
    • cRoot hair cells
    • dGuard cells
  3. Question 3Skills & concepts

    Xylem vessels and tracheids share which structural feature that suits them for water transport?

    • aElongated shape with lignified (thickened) walls
    • bLiving cytoplasm-rich contents
    • cSieve plates for organic food transport
    • dA function in storing pollen

Answer these and 18 more on Plant Transport & Photosynthesis

Free account. Instant marking, a written explanation for every question.

Start practising free

More Biology Year 2 topics

All Biology topics