~~植物的生長~~

2007-05-13 12:18 am
請問以下幾個term有咩分別?
1. radicle
2. seed
3. seedling
4. coleoptile

唔該晒~
更新1:

5. plumule

回答 (1)

2007-05-13 12:36 am
✔ 最佳答案

圖片參考:http://www.infovisual.info/01/img_en/026%20Section%20of%20a%20seed.jpg






Section of a seed: edible fruit, almost without exception seeds of the Graminae family.
Pericarp and seed coat: thin membrane that covers and protects the grain.
Endosperm: tissue providing nutrients to the early stage corn.
Cotyledon: fleshy lobe within the grain.
Coleoptile: envelop surrounding the young stem.
Epicotyl: part of the plant above the cotyledon.
Hypocotyl: part of the plant below the cotyledon.
Radicle: part of the plant originating the root.
Point of attachment: point attaching the seed to the plant.
Seed coat: thin membrane that covers and protects the grain.
Starch: part of the grain from which flour is produced.
Germ: plantlet.
Shell: hard, solid covering of the grain.
Brush: hairy part of the grain.
http://en.wikipedia.org/wiki/Hypocotyl


2007-05-12 16:36:16 補充:
http://www.infovisual.info/01/026_en.html


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