Which of these structures is diploid in the life cycle of sexual reproducers?

• A. Sporophyte
• B. Gamete
• C. Zygote
• D. Spore

Answer: (C)

Verified step by step guidance

1. Understand the concept of ploidy: Diploid cells contain two sets of chromosomes, one from each parent, while haploid cells contain only one set.
2. Identify the structures involved in the life cycle of sexual reproducers: Sporophyte, Gamete, Zygote, and Spore.
3. Analyze the ploidy of each structure: Gametes (sperm and egg) are haploid, containing one set of chromosomes.
4. Consider the zygote: When two gametes fuse during fertilization, they form a zygote, which is diploid, containing two sets of chromosomes.
5. Review the role of the sporophyte: In many plants, the sporophyte is also diploid, as it develops from the zygote and undergoes mitosis to grow.