Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
(a) Predict which group will show poorer root elongation and identify the tissue directly affected. (1 mark)
(b) A young stem bends in the wind but does not break easily. Name the tissue responsible and explain the structural reason. (1 mark)
(c) Explain why fruit formation may be poor when pollinators are absent. Use both pollination and fertilisation in your answer. (2 marks)
(d) Explain one population-level consequence if most seeds fall close to the parent plant. (1 mark)