Select all that applyIn many animal species, females have higher parental investment. Which of the following are reasons for that?Multiple select question.The number of eggs produced by a female is typically much larger than the number of sperm produced by a male.Eggs are much larger than sperm.In all animals, female reproductive organs are more complex and much larger.Eggs contain yolk and other nutrients.
Question
Select all that applyIn many animal species, females have higher parental investment. Which of the following are reasons for that?Multiple select question.The number of eggs produced by a female is typically much larger than the number of sperm produced by a male.Eggs are much larger than sperm.In all animals, female reproductive organs are more complex and much larger.Eggs contain yolk and other nutrients.
Solution
The reasons for higher parental investment in many animal species by females could be:
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Eggs are much larger than sperm: This is true. The size of the egg is much larger than the sperm, which means it requires more energy and resources to produce. This could lead to a higher parental investment by females.
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Eggs contain yolk and other nutrients: This is also true. The egg not only contains the genetic material but also the nutrients necessary for the embryo to develop until it can secure its own food. This again leads to a higher investment by females.
The other two options are not necessarily true:
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The number of eggs produced by a female is typically much larger than the number of sperm produced by a male: This is generally not true. In most species, males produce a much larger number of sperm than females do eggs.
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In all animals, female reproductive organs are more complex and much larger: This is not always true. The complexity and size of reproductive organs can vary greatly among different species.
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