1.The gametophyte tissue forms a slender stalk that lifts the sporophyte above t
ID: 189741 • Letter: 1
Question
1.The gametophyte tissue forms a slender stalk that lifts the sporophyte above the thick tuft of stems in which it was originally enclosed. Why is this an advantage in the reproductive cycle?
2.How is the mechanism for spore dispersal in ferns similar to that of bryophytes?
3.Is the prothallium haploid or diploid?
4.Is the prothallium sporophyte or gametophyte?
Complete the table
Plant structure
Sporophyte or Gametophyte
Function
Prothallium
Spore
Sporangium
Antheridium
Archegonium
Plant structure
Sporophyte or Gametophyte
Function
Prothallium
Spore
Sporangium
Antheridium
Archegonium
Explanation / Answer
1. Gametophyte which have haploid cells , are the leafy parts of plants . The gametes undergo fertilisation , from which the zygote develops . The zygote undergoes mitosis and forms a diploid sporophyte . Sporophyte is the structure with a slender stalk and sporangium. The sporangium undergoes meiosis and the spores are released .
2.In bryophyte vegetative propagule are generally dispersed by water insects and larger animals .
In ferns the dispersal happens with water and winds .
3. Prothallium the small green heart shaped structure is a gametophyte.
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