41. How do you distinguish between hypogeal germination and epigeal germination? What is the role of cotyledon(s) and the endosperm in the germination of seeds?
Hypogeal Seed Germination | Epigeal Seed Germination |
Rapid growth and elongation of epicotyl. Cotyledons remain inside the soil. Cotyledons remain non-green, non photosynthetic e.g., castor, beans.
| Rapid growth and elongation of hypocotyl. Seed cotyledons emerge above the soil level. Cotyledons become green and photosynthetic e.g., maize,rice.
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Role of Cotyledons and Endosperm Cotyledons and endosperm contain reserved food materials. When seed imbibes water, enzymes get activated, hydrolyse reserve food material and makes it available for the germinating seed.
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