In Funaria the antheridia and archegonia develop on the same plant but...
Explanation:
Funaria is a genus of mosses that belongs to the family Funariaceae. It is a dioecious species, which means that male and female reproductive structures develop on separate plants. However, Funaria is also heteroicous, which means that male and female reproductive structures develop on different branches of the same plant.
Antheridia and Archegonia Development:
In Funaria, antheridia and archegonia develop on separate branches of the same plant. The antheridia are small, round structures that produce sperm cells, while the archegonia are flask-shaped structures that produce eggs.
Dioecious and Heteroicous:
As mentioned earlier, Funaria is dioecious, which means that male and female reproductive structures develop on separate plants. However, it is also heteroicous, which means that male and female reproductive structures develop on different branches of the same plant.
Monoecious and Autoicous:
A monoecious plant is one that has both male and female reproductive structures on the same plant. In contrast, an autoicous plant is one that has both male and female reproductive structures on the same branch.
Therefore, Funaria is neither monoecious nor autoicous, but rather dioecious and heteroicous.
In Funaria the antheridia and archegonia develop on the same plant but...
The Funaria plants are monoecious and autoecious, i.e., male (antheridia, club shaped) and female (archegonia, flask shaped) reproductive organs are produced on the same plant but on different branches. Male organs mature first and hence Funaria plants are Protandrous.
There are two generations in life cycle of Funaria, i.e., gametophytic generation (n) which is independent and complex and sporophytic generation (2n) which is partially dependent upon gametophytic generation.
These two generations follow each other in regular sequence. This is called heteromorphic or heterologous alternation of generations
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