Question

select all that apply
select all of the angiosperm stages that are haploid.

female gametophyte
egg
microspore
sperm
flower
zygote
sporophyte
megaspore

Explanation:

• Female gametophyte: It is formed from a megaspore (which is haploid) through mitotic divisions. Since the starting cell (megaspore) is haploid, the female gametophyte is haploid.
• Egg: The egg is produced within the female gametophyte. As the female gametophyte is haploid, the egg (a cell within it) is also haploid.
• Microspore: Formed by meiosis of microspore mother cell (which is diploid). Meiosis reduces the chromosome number by half, so microspore is haploid.
• Sperm: Produced from microspore (which is haploid) through mitotic divisions. Since the starting cell (microspore) is haploid, sperm is haploid.
• Megaspore: Formed by meiosis of megaspore mother cell (which is diploid). Meiosis reduces the chromosome number by half, so megaspore is haploid.
• Flower: Part of the sporophyte (which is diploid). So, it is diploid.
• Zygote: Formed by the fusion of sperm (haploid) and egg (haploid). The fusion gives a diploid zygote ($n + n=2n$).
• Sporophyte: The dominant phase in angiosperms. It is diploid (arises from zygote which is diploid).

Answer:

female gametophyte, egg, microspore, sperm, megaspore