Biology Forum Botany Discussion Seed Plants

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    • #4496
      undisclothesed
      Participant

      I have a few questions i can’t find answers to, can you guys help me out? ❓

      1. What similarities do gymnosperms and anthophytes have in their mechanisms of gamete formation, fertilization, and dispersal? What Differences?

      2. How does a seed differ from a spore?

      3. If a species of pine has a diploid number of chromosomes equal to 40, how many chromosomes will be found in an embryo in the seed? In a pollen nucleus? In a megasporocyte? In a nucellus tissue?

    • #46724
      Linn
      Participant

      those are really not in your book?

      the seed one is easy.

    • #47245
      undisclothesed
      Participant

      i’m having trouble with the first two.

      can someone correct me if i’m wrong for my 3rd question:

      embryo- 40 chromosomes
      pollen nucleus- 20 chromosomes
      megasporocyte- 40 chromosomes
      nucellus tissue- 40 chromosomes

    • #47302
      Linn
      Participant
      quote :

      anthophytes

      I am confused about this word. 😕 Is there an other name for it?
      Do you mean bryophyte or antheridia? or anthocyanis?
      and I think this topic should be in the genetics section, too difficult for me to answer.

      just remember that the gametes of any organism are haploid (n), so you need times whatever number by 2???
      so 2n = diploid

      PS: any cell having one set of chromosomes is haploid
      so to each example you gave you found out what each has?

    • #47305
      undisclothesed
      Participant

      anthophytes are flowering plants.

      # of Chromosomes:
      *embryos are diploid (2n) so the # of chromosomes would be 40
      *pollen is haploid so the# of chromosome would be 20
      *i believe the megasporocyte is diploid, but i am not sure..
      *nucellus is diploid tissue so the # of chromosomes would be 40

      I’m still lost on the first question, can anyone help me out.
      1. What similarities do gymnosperms and anthophytes have in their
      mechanisms of gamete formation, fertilization, and dispersal? What Differences?

    • #47327
      Linn
      Participant

      yes, you are correct: megasporocyte is diploid.

      quote :

      anthophytes are flowering plants.

      [size=18]LOL a few years ago they were called angiosperms ❗ [/size]so now I can help you out with that first question, but I wonder why you cant find this in your book? or do you try to look in google?:

      quote :

      1. What similarities do gymnosperms and anthophytes have in their
      mechanisms of gamete formation, fertilization, and dispersal? What Differences?

      similarities:both gymnosperms and "anthophytes" AKA angiosperms,
      are both heterosporus.

      Differences: in gymnosperms seed is on the surface of the sporophyll
      in angiosperms seed is enclosed in sporophylls because it will form one or more carpels of the ovary (to become flowers)

      I think you should google it 🙂

    • #47834
      Jdse94
      Participant

      Any one here know the life span of angiosperms. You guys seem to know a lot about them!
      Thanks

    • #47848
      Linn
      Participant

      well there is quite a large range there 😉
      If you google about them you will find out about them, from trees to >flowers.

    • #47861
      AstusAleator
      Participant

      Angiosperms are annual, biennial, or perennial.
      Annual should be obvious: they go from seed to death in the course of a year.
      Biennial angiosperms will grow for a year or so and then flower and die in the second year.
      Perrenials persist for many years. There are some living perennials that are centuries old.

    • #47866
      Jdse94
      Participant

      Thanks A Lot!
      Really helped me out 😆 😛 8)

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