F4 BIO Phloem cell and Xylem cell

2007-11-04 1:21 am
Phloem cell and Xylem cell
Do they have nuclei?
What are the differences between them?
Do they have any relationship with sieve tube?
If you can please answer in both Chinese and English because I may not understand all the Englsh terms.
Thank you very much.

回答 (4)

2007-11-04 3:05 am
✔ 最佳答案
Phloem cell has nuclei but xylem do not
phloem有核但xylem沒有
phloem is living cell, xylem is dead cell
phloem是生存緊的細胞, xylem 是死了的細胞
and phloem is used to transport sucrose and minerals, xylem is used to transport water.
phloem是用來傳送糖和礦物質, xylem則是用來傳送水
only phloem have sieve tube
2007-11-26 7:03 am
phloem is used to transport FOOD, xylem is used to transport water and MINERAL.
2007-11-07 1:26 am
Phloem cell and Xylem both don't contain nucleus,
Xylem cell is dead so it only have cell wall.
Although Phloem cell is liveing cell,it doesn't contain nucleus because
nucleus is so big.Instead,
there are some伴細胞(i forget the english name!!) to control the activity of the cell
參考: these my bio teacher told me,i think it is not wrong
2007-11-04 6:11 am
Phloem contain nucleus, it was a living cell

Xylem does not have nucleus, it was a dead cell

Phloem is used to transport food, it does not have thick cell wall.

Xylem is used to transport water and minerals, it has a hard and tick cell wall, it also contain liqnin, which is supporting the plant, in the xylem.

Only phleom have sieve tube and sieve plate.
參考: sorry i only know english , but not chinese


收錄日期: 2021-04-13 14:19:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071103000051KK02997

檢視 Wayback Machine 備份