A:
Unicellular And Jacketed
B:
Multicellular And Non Jacketed
C:
Multicellular And Jacketed
D:
Unicellular And Non Jacketed
Explanation
The reproductive structures in pteridophytes, specifically in ferns, are multicellular and jacketed. The multicellular structure is called a sporangium, which is a specialized structure that produces spores through meiosis. The jacketed nature of the sporangium refers to the protective covering that surrounds the sporangium and helps to prevent the spores from drying out.
In addition to sporangia, some pteridophytes have separate gametophyte and sporophyte phases. The gametophyte phase produces sex organs called antheridia and archegonia, which are multicellular and jacketed structures that produce sperm and eggs, respectively. These sex organs are usually found on the underside of the gametophyte, near the base of the plant.
