Question

question 4
how can you tell the difference between alternate and opposite leaf arrangements?
they are based on based whether the leaf has a smooth or toothed margin.
they are based on whether the leaf is simple or compound.
they are based on based whether the leaf has one or two leaves at the node.
they are based on based whether the leaf pinnate or palmate venation.

Explanation:

• Option A: Leaf margin (smooth/toothed) relates to leaf margin types, not arrangement. Eliminate.
• Option B: Simple/compound refers to leaf structure, not arrangement. Eliminate.
• Option C: Alternate arrangement has one leaf per node; opposite has two leaves per node (opposite each other). This matches the definition of leaf arrangement. Correct.
• Option D: Pinnate/palmate venation is about leaf vein patterns, not arrangement. Eliminate.

Answer:

C. They are based on whether the leaf has one or two leaves at the node.