Prothallus is a:
1. Multicellular, free-living, mostly photosynthetic thalloid gametophyte in pteridophytes
2. Multicellular, free-living, mostly photosynthetic thalloid sporophyte in pteridophytes
3. Multicellular, free-living, non photosynthetic thalloid gametophyte in pteridophytes
4. Multicellular, free-living, mostly photosynthetic well differentiated sporophyte in pteridophytes

Consider the following four statements whether they are correct or wrong,
(A) The sporophyte in liverworts is more elaborate than that in mosses.
(B) Salvinia is heterosporous.
(C) The life-cycle in all seed-bearing plants is diplontic.
(D) In Pinus, male and female cones are borne on different trees.
The two wrong statements together are

Which one of the following is a correct statement?
1. Pteridophyte gametophyte has a protonemal and leafy stage
2. In gymnosperms, female gametophyte is free-living
3. Antheridiophores and archegoniophores are present in pteridophytes
4. Origin of seed habit can be traced in pteridophytes

Strobili or cones are found in:

Which set contains flagellated male gametes?
1. Spirogyra, Anthoceros and Funaria
2. Zygnema, Saprolegnia and Hydrilla
3. Fucus, Marsilea and Calotropis
4. Riccia, Dryopteris and Cycas

Consider the following two statements:

I. In Selaginella and Salvia, development of zygotes into young embryos takes place within the female gametophyte.
II. Selaginella and Salvia are homosporous pteridophytes

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true