[Campbell Biology P.742] Use Figure 33.7 to determine the ploidy level of a feeding polyp, a... | Practice Question

Use Figure 33.7 to determine the ploidy level of a feeding polyp, a medusa, and a zygote in the Obelia life cycle.

  • A: Feeding polyp (n), Medusa (n), Zygote (2n)
  • B: Feeding polyp (2n), Medusa (n), Zygote (2n)
  • C: Feeding polyp (2n), Medusa (2n), Zygote (2n)
  • D: Feeding polyp (n), Medusa (2n), Zygote (n)

Explanation

According to Figure 33.7, the Obelia life cycle primarily involves diploid 2n stages for the polyp colony, medusa, zygote, and larva. Only the gametes egg and sperm produced by meiosis are haploid n .