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joelle

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Everything posted by joelle

  1. if anyone knows the answer to this, please post. In which direction(s) does the translocation of plant food occur?
  2. this question is driving me insane. i tried every website but cant find the answer to it. if anyone knows please post. In which direction(s) does the translocation of plant food occur?
  3. joelle

    karyotypeee

    i wrote this.. Chromosomes of a gamete would not be used to produce a karyotype because they do not show homologus pairs which are needed to show different traits that an individual has. Examples of these traits include: eye colour, and height. They also do not show the sex of an individual (unless the chromosome shown is Y then it is a male) because one sex chromosome comes from the mother and one comes from the father. Somatic cells on the other hand show homologus pairs of chromosomes.
  4. joelle

    karyotypeee

    Why would the chromosomes of a gamete not be used to produce a karyotype?
  5. How do the xylem vessels produced in a tree change within a season
  6. arent only sperm and egg haploid?
  7. joelle

    helpp:(

    6: How do the xylem vessels produced in a tree change within a season? i dont know at all no site is telling me;(
  8. god created the world...and the galaxiess and the animals and humans.. and everything
  9. Why are herbaceous stems green?
  10. joelle

    help=)

    does anyone happen to know what special enviornmental conditions taproots have adapted to?
  11. thank youuuu for the second time lol
  12. a. Sieve-tube cells lack a nucleus, are arranged end to end and have channels in end walls (thus, the name "sieve-tube") through which plasmodesmata extend from one cell to another. b. Companion cells connect to sieve-tube cells by numerous plasmodesmata, are smaller and more generalized than sieve-tube cells; they have a nucleus. is that right? like about how they connect to compannion cells who have a nucleus?
  13. Mature phloem cells lack a nucleus. If the nucleus is the control center of the cell, how are there cells controlled? i dont get that question wouldnt it just not function withoutt a nucleusss? im lost
  14. this sitee is cool lol im so glad i found it. i have some more questionss but im trying to figure them outt! you'll probally hear from me againn:cool: loll
  15. thank you so much! i was freakingg out lol =)
  16. i read thatt already, but thankss soo much i still dotn get it its only worth 2 marks i was told that in one, when corsssectioned, the xylem is arranged in a circle in the other they're scattered is that truee? and if soo which one are they scattered
  17. How does xylem tissue in angiosperms differ from xylem tissue in gymnosperms?
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