the mechanism is called something, but there are gaps with in them which have water in them as the water is release the cells contract once all water is gone they snap back to release spores :)
you say the spores are released from the sporangium by a "special mechanism." I was just wondering how specifically they are released. Its for a project and the it would be greatly appreciated if you answer back. Thanks!
5 youtube videos, my bio textbook and my biology instructor could not explained what you just explained so perfectly! That was so clear! And thanks for explaining how ferns have multi-cellular free living diploid and haploid stages.
Good video thanks a lot! I just wonder maybe I missheard. But didn't Andy say that fern is the only landplant who have this kind of lifecycle but dosen't moss have the same life cycle more or less?
Mans: The difference between ferns and mosses is that in the moss life cycle, the gametophyte is dominant and the sporophyte is not. The sporophyte is basically a parasite. This may appear to resemble mosses, but it is quite different.
Help ful!!.....the plant u holding in u'er hand......where is gametophyte???? ....aren't these on same plant .....????when gametophyte forms sporophyte ....it degenerates??
@ Sandeepa Suriyage: To answer the question about the bisexual gametophyte. Indeed you will see this depicted in textbook illustrations and it is incorrect for the majority of species. There are a few that can produce gametophytes with both sex organs and THEN self. There are clear problems with this! This is the most extreme form of selfing possible in plants. The spore is created by meiosis. This germinates and grown by mitosis. So, the gametes produced on the gametophytes are identical, and selfing produces sporophytes that are 100% homozygous at all loci. It takes but a single recessive lethal to cause problems... and given that sperm and egg are identical, and that selfed sporophytes are homozygous: lethals will be expressed. So, why is such nonsense reproduced over and over again in textbooks? I do not know, ask the publishers.
I am a 10 Yrs Old Kid.Help me about Science pls😄When i grow up,I want to become a Sciencetist but can you make more videos of Animals and others☺Thank you
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This is just awesome. I understand it so quickly and easily .👍❤
This video saved my marriage, thank you unnamed vigilante!
Thanks Mr. Caudill for sending me here.
lol rchs
Lol same
Ayy same lol
Yoooooooooooo
ayyyyyyyyy 2nd gen boi
Can you do stages of the fern plss
the mechanism is called something, but there are gaps with in them which have water in them as the water is release the cells contract once all water is gone they snap back to release spores :)
you say the spores are released from the sporangium by a "special mechanism." I was just wondering how specifically they are released. Its for a project and the it would be greatly appreciated if you answer back. Thanks!
Also isn't the male and female organ on one Prothalium. Female on top and male on the bottom. That's what my Professor said
5 youtube videos, my bio textbook and my biology instructor could not explained what you just explained so perfectly! That was so clear! And thanks for explaining how ferns have multi-cellular free living diploid and haploid stages.
Well done, Eddie.
Good video thanks a lot! I just wonder maybe I missheard. But didn't Andy say that fern is the only landplant who have this kind of lifecycle but dosen't moss have the same life cycle more or less?
Mans: The difference between ferns and mosses is that in the moss life cycle, the gametophyte is dominant and the sporophyte is not. The sporophyte is basically a parasite. This may appear to resemble mosses, but it is quite different.
thank you so much for the astute explanation. my bio teacher didn't take the time to explain that, most probably because of lack of time.
Help ful!!.....the plant u holding in u'er hand......where is gametophyte???? ....aren't these on same plant .....????when gametophyte forms sporophyte ....it degenerates??
Very clear,,😍😍😍😍❤thank you very much
Thanks. Good Jobs. Yes, green was a bit difficult to see
Awesome video! Really helped me study for my biology final
@ Sandeepa Suriyage: To answer the question about the bisexual gametophyte. Indeed you will see this depicted in textbook illustrations and it is incorrect for the majority of species. There are a few that can produce gametophytes with both sex organs and THEN self. There are clear problems with this! This is the most extreme form of selfing possible in plants. The spore is created by meiosis. This germinates and grown by mitosis. So, the gametes produced on the gametophytes are identical, and selfing produces sporophytes that are 100% homozygous at all loci. It takes but a single recessive lethal to cause problems... and given that sperm and egg are identical, and that selfed sporophytes are homozygous: lethals will be expressed. So, why is such nonsense reproduced over and over again in textbooks? I do not know, ask the publishers.
I am a 10 Yrs Old Kid.Help me about Science pls😄When i grow up,I want to become a Sciencetist but can you make more videos of Animals and others☺Thank you
Thank you SO MUCH!
thanks
Is it just me or is that the version of Tom Brady that never made the NFL
thank you
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