Lesson 7 ·Class 9 · The Flower · Match Lab
Inflorescence and Placentation
How flowers are arranged, and how ovules are attached.
Match each term to its description.
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Free play — tap an item on the left, then its partner on the right; each link tells you why. Switch to when you're ready to test yourself.
For inflorescence, ask where the OLDEST flower is. For placentation, ask where the ovules ATTACH.
What this lesson covers
Challenges to clear
- Match every term.
- Connect the inflorescence whose oldest flower sits at the top, not the base.
The task
Match each term to its description.
What this lesson covers
- Racemose inflorescence — Main axis keeps growing; the oldest flowers are at the base (Growth is indefinite, so flowering moves upward.)
- Cymose inflorescence — Main axis ends in a flower; the oldest flower is at the top (Growth is definite — the tip is used up by a flower.)
- Solitary — A single flower borne alone (As in hibiscus or a tulip.)
- Marginal placentation — Ovules along one margin of a single-chambered ovary (The pea pod is the standard example.)
- Axile placentation — Ovary divided into chambers, ovules on the central axis (Cut a tomato or an orange across and you can see it.)
- Parietal placentation — Ovules on the inner wall of a one-chambered ovary (As in mustard and cucumber.)
Hint
For inflorescence, ask where the OLDEST flower is. For placentation, ask where the ovules ATTACH.