The term for reproduction in which the fertilized egg is retained in the oviduct and nourished by the egg yolk is
A) marsupium
B) vivaparous
C) oviparous
D) ovoviviparous
Answer: D) ovoviviparous
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Biology
- The osmoregulatory/excretory system of a freshwater flatworm is based on the operation of _____.
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