Lesson 4 ·Class 9 · The Flower · Match Lab
Calyx and Corolla
Protection and attraction.
Match each term to what it means.
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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.
Gamo- means joined, poly- means free. That prefix rule works for sepals and petals alike.
What this lesson covers
Challenges to clear
- Match every term.
- Connect the perianth to what it means — the case where you cannot tell sepals from petals.
The task
Match each term to what it means.
What this lesson covers
- Calyx — The whorl of sepals that encloses and protects the bud (Usually green, so it can also photosynthesise.)
- Corolla — The whorl of petals that attracts pollinators (Colour, scent and nectar are all advertising.)
- Perianth — Calyx and corolla when they cannot be told apart (As in a lily — the individual parts are then called tepals.)
- Gamosepalous — Sepals joined to one another (Gamo- means united.)
- Polypetalous — Petals free and separate from one another (Poly- here means many and separate.)
- Nectar guides — Lines on petals that direct an insect to the nectar (They steer the insect past the anthers and stigma.)
Hint
Gamo- means joined, poly- means free. That prefix rule works for sepals and petals alike.