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Evaluation · Q40

Q.Could the number of eggs or young ones produced by an oviparous and viviparous female be equal? Why?

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Step 1. In oviparous reproduction (e.g. most fish, amphibians, reptiles, birds, and the egg-laying platypus among mammals), eggs are laid and then develop largely outside the mother's body, often with little or no further parental protection in many groups, especially fish.

Step 2. Because the embryo receives little direct protection or nourishment from the mother after the egg is laid, the odds of any single egg surviving to adulthood are low — so oviparous species compensate by producing a very large number of eggs per reproductive cycle, improving the chance that at least some survive. …

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