Question

In general, mothers typically make a larger parental investment in each offspring than males do. What is meant by the term parental investment?

		Parental investment is the energy and time expended constructing and caring for offspring, and is typically measured in fitness.
		Parental investment is the result of parental competition for carrying for offspring.
		Parental investment is the energy saved by parents when there is no care for offspring.
		Parental investment is the energy invested by parents to produce offspring before birth.
		None of the above.

Answer 1

Ans) The correct answer is "A" i.e Parental investment is the energy and time expended constructing and caring for the offspring,and is typically measured in fitness (and this incurs cost to the parents when both invest time and energy in rearing and producing the offspring) thus females are more choosy when selecting the mate becausw they invest maximum energy.But in the cases of biparental care, both mother and father invests equal energy and incurs cost equally in rearing the offspring and in this case the degree of mate choice will be equal in both.