Question

1. What is meant by alternation of generations?

2. What type of nuclear division is involved in the development of a sporophyte plant? Of the spores?

3. Arrange the following structures or processes in oden showing the life cycle of a moss plant. Feel free to add more text or description of the processes
   1. Spore dispersal
   2. Spore germination
   3. Egg
   4. Sperm
   5. Spores
   6. Fertilization
   7. Sporophyte Adult (2n)
   8. Sporophyte Zygote (2n) > Sporophyte Embryo (2n)
   9. Meiosis
   10. Mitosis
   11. Gametophyte (n)
   12. Antheridium (male)
   13. Archegonium (female)

4. How are the sperms dispersed? And the spores?

5. The leaves, stems, and rhizoids of mosses are analogous to leaves, stems, and roots of higher plants. What does this mean?

Answer 1

1) in life cycle two type of generation are present.

N haploid , gametophyte

2n diplod, sporophyte

Alteration of these two generation in life known as alteration of generation.

2) in mosses , spires are generated by meiosis so they have n chromosome. So they under go mitosis division to form male and female gametophyte. From the male and female gametophyte haploid sperm and egg are formed which fused and lead to formation of 2n sporophyte.

3) life cycle of moss

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