Q1. Give reasons for the following:
a) Telephone wires/electrical wires sag in summers. Why? Identify the type of change taking place.
b) Stem is also known as two-way street in a plant.
Q2. a) Name any two agents that brings changes giving one example each.
b) What do you mean by the term modified stem? Explain any two stem modifications.
Q3. Why are pistil and stamen very important for the survival of a plant?
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