Match each seed germination structure or growth process on the left with its corresponding role during seedling development on the right.
- Hypocotyl elongation in epigeal germinationPushes the cotyledons above the soil surface into the light
- Epicotyl elongation in hypogeal germinationKeeps cotyledons below ground while pushing the shoot upward
- Coleoptile emergence in monocot seedlingsForms a protective sheath around the shoot tip during soil penetration
- Radicle emergence through the micropyleAnchors the seedling and forms the primary root system
Answer
Hypocotyl elongation in epigeal germination pairs with pushing cotyledons above the soil surface. Epicotyl elongation in hypogeal germination pairs with keeping cotyledons below ground while pushing the shoot upward. Coleoptile emergence pairs with forming a protective sheath around the shoot tip during soil penetration. Radicle emergence pairs with anchoring the seedling and forming the primary root system.
Each plant developmental structure performs a distinct physiological role during germination: hypocotyl growth elevates cotyledons above ground in epigeal species; epicotyl growth keeps cotyledons underground in hypogeal species; the coleoptile protects the delicate young shoot tip in monocots; and the radicle emerges first to establish the primary root system.
Step-by-Step Solution
Key Concept
Plant Seed Germination Types and Early Embryonic Growth Patterns