The question asks which pair of plants do not produce seeds. To answer this, we need to understand some fundamental differences between various types of plants.
Plants can be broadly classified into two groups: those that produce seeds and those that do not.
- Seed-producing plants: These include Angiosperms (flowering plants, e.g., Ficus) and Gymnosperms (non-flowering plants with seeds, e.g., Pinus).
- Non-seed-producing plants: These include Bryophytes and Pteridophytes:
- Bryophytes: This group includes mosses like Funaria, which do not produce seeds. They reproduce via spores.
- Pteridophytes: This group includes ferns, which also reproduce via spores and do not produce seeds.
Now, let's evaluate the options:
- Fern and Funaria: Both fern (a pteridophyte) and funaria (a bryophyte) do not produce seeds. They reproduce through spores.
- Funaria and Ficus: Although funaria does not produce seeds, Ficus (a flowering plant) does produce seeds.
- Ficus and Chlamydomonas: Ficus is a seed-producing plant, whereas Chlamydomonas is a type of algae and does not produce seeds.
- Punaria and Pinus: If "Punaria" refers to "Funaria," it would be correct that Funaria does not produce seeds, but Pinus (a gymnosperm) does produce seeds.
Based on this analysis, the pair of plants that are not seed producers is Fern and Funaria.