Read the following statements and choose the correct option: 1. The gymnosperms are heterosporus; they produce haploid microspores and megaspores. 2. In gymnosperms, the male and female gametophytes have an independent free-living existence. 3. The seeds in gymnosperms are covered. 4. The development of pollen grains take place within the megasporangia.

Step-by-step solution

The gymnosperms are heterosporus; they produce haploid microspores and megaspores. In gymnosperms, the male and female gametophytes do not have an independent free-living existence. After fertilization, zygote develops into an embryo and the ovules into seeds. These seeds are not covered. The development of pollen grains take place within the microsporangia.