[Campbell Biology P.687] Based on Figure 30.3 and the accompanying text, which statement cor... | Practice Question

Based on Figure 30.3 and the accompanying text, which statement correctly identifies a structure or process and its ploidy level in the gymnosperm life cycle?

  • A: The integument, a protective sporophyte tissue, is haploid (n).
  • B: The female gametophyte, which develops within the ovule, is diploid (2n).
  • C: The embryo, representing the new sporophyte, is diploid (2n) and develops from a fertilized egg.
  • D: The food supply of the seed is diploid (2n) and derived from the male gametophyte tissue.

Explanation

Figure 30.3 and the text clarify the ploidy levels: integument 2n , megasporangium 2n , male gametophyte n , megaspore n , female gametophyte n , egg nucleus n , discharged sperm nucleus n , embryo 2n , and food supply n, from female gametophyte tissue . The embryo is indeed a new diploid sporophyte.