Are gymnosperms heterosporous?
Gymnosperms:
Read the following statements 1-5 and answer the question which follows them:
1. In liverworts, mosses and ferns gametophytes are free living.
2. Gymnosperms and some ferns are heterosporous.
3. Sexual reproduction in Fucus, Volvox and Albugo is oogamous.
4. The sporophyte in liverworts is more elaborate than that in mosses.
5. Both Pinus and Marchantia are dioecious.
Which of the above statements are correct?