Cotyledon: meaning, definitions and examples
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cotyledon
[ˌkɒtɪˈliːdən ]
Definition
botanical term
A cotyledon is the first leaf or leaves that appear from a seedling. In plants, cotyledons serve as a nutrient source for the young plant until it can produce its own food through photosynthesis. The number of cotyledons can vary; for example, dicots typically have two cotyledons, while monocots have one.
Synonyms
seed leaf.
Examples of usage
- The pea plant has two cotyledons.
- During germination, the cotyledon emerges from the seed.
- Cotyledons can sometimes photosynthesize.
- The orchid is known for having a single cotyledon.
Interesting Facts
Etymology
- The term comes from the Greek words 'kotylē' meaning 'cup' and 'dōn' meaning 'given', reflecting the cup-like shape of the seed leaves.
- It was first used in the early 19th century as scientists began classifying plant structures more systematically.
Botanical Significance
- Cotyledons are vital for seedling survival, as they often store nutrients that support the young plant before it can photosynthesize.
- Plants are typically categorized as either monocots, which have one cotyledon, or dicots, which have two, influencing their growth patterns.
Cultural References
- In gardening, understanding cotyledons can help gardeners know when to transplant young plants to give them the best chance at survival.
- In some folklore, seeds with strong cotyledons were seen as symbols of potential and rebirth, indicating a strong future for the plant.
Science
- Studies show that the size and health of cotyledons can significantly impact a plant's early growth and resilience to environmental stress.
- Cotyledons play a crucial role in signaling when to start producing true leaves, marking a plant's transition to maturity.
Education
- In biology classes, teaching about cotyledons often sparks interest in plant anatomy and the life cycle of flowering plants.
- Hands-on activities, like growing seeds in class, help students visualize the process and importance of cotyledons.
Translations
Translations of the word "cotyledon" in other languages:
🇵🇹 cotilédone
🇮🇳 बीजपत्र (बीजपत्र)
🇩🇪 Keimblatt
🇮🇩 kotiledon
🇺🇦 сім'ядоля
🇵🇱 liść zarodkowy
🇯🇵 子葉 (こよう
🇫🇷 cotylédon
🇪🇸 cotiledón
🇹🇷 kotiledon
🇰🇷 씨앗잎 (씨앗 잎)
🇸🇦 ورقة جنينية (ورقة جنينية)
🇨🇿 děložní list
🇸🇰 klíčový list
🇨🇳 子叶 (zǐ yè)
🇸🇮 kotelidon
🇮🇸 fræplátur
🇰🇿 бұтақ жапырағы
🇬🇪 სემიადოლი
🇦🇿 toxum yarpağı
🇲🇽 cotiledón