lblackboard.kean.edu/webapps/assessment/take/launch.jsp?course.assessment id-381
ID: 199583 • Letter: L
Question
lblackboard.kean.edu/webapps/assessment/take/launch.jsp?course.assessment id-38154 18cou QUESTION 1 Do semelparous or iteroparous species have more offspring when they reproduce? Semelparous has mone Iteroparous has more They have the same (1:1) QUESTION 2 What species reproduces via parthenogensis? O humans Oak trees O Salmon QUESTION 3 Why are females typically more selective with their mate choice? Because they often raise the offspring because eggs cost more than sperm to produce because there is a risk when giving birth All of the above 20 F2 F3 F4 FS F6Explanation / Answer
1. Semelparous has more offspring after reproduction. Semelparous and iteroparous are reproductive strategies employed by an organism but these two are not exclusive reproductive strategies because there is some organism that falls in between these two categories. Semelparous species breed just once and produce a large number of offsprings during their lifetime such as salmon, many insects etc. In doing so semelparous species invest all the available resources in reproducing.On the contrary, iteroparous species can breed for multiple times in their lifetime producing a single or few species.Humans are iteroparous species.
2. Honeybees can reproduce by parthenogenesis. Parthenogenesis is a form of reproduction where an unfertilized egg forms new individual often haploid. Now in case of honeybees fertilized eggs will become females because queen bees lay fertilized female eggs with the help of sperms collected in flight.Female worker bees do not mate and as a result, they lay unfertilized male(drone) eggs.This male drone developing from unfertilized eggs is haploid and thus have half the number of original chromosomes and their genetic material typically resembles maternal parent.
3. Females are typically more selective with their mate choice because eggs cost more than sperms to produce. Mating choice practiced by female gives them an advantage and prevent their eggs from getting wasted as eggs are fewer in number, much larger, packed with protein, lipid and other nutrient required for the development of embryo while sperm is greater in number. In regard to reproduction, it has been observed that in some animals females are responsible for gestation and lactation activities and they can improve their fitness by choosing best mate. In addition, females can select their mate based on appearance, parental care, courtship behaviour of male mates so that demand for eggs are met for effective reproduction.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.