Question
Which of the following is the best way to distinguish male from female?a) Males are larger.b) Males are more brightly colored.c) Males produce motile gametes.d) Males are more aggressive.e) All of the above statements are correct.
Step 1
While this is true for some species, it is not universally applicable. For example, in many species of birds, insects, and spiders, females are larger than males. Therefore, we cannot use this as a reliable method to distinguish males from females. So, option (a) Show more…
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In a situation in which males guard eggs and care for the young without help from the female, which of the following statements would most likely be correct? a) Males are large and more brightly colored in order to attract the very best females. b) Males and females are equally brightly colored, but males court females aggressively. c) The population is monogamous with no sexual dimorphism. d) A single male controls a harem of females to which he has exclusive reproductive access. e) Females are more brightly colored than males and court males aggressively.
Which of the following are similar features of the reproductive systems of males and females? a. They are the site where meiosis occurs in the body. b. They produce sex hormones. c. They produce the gametes. d. All of these are correct.
Sexual selection, such as occurs when males compete for access to fertile females, frequently influences aspects of body form and can lead to ______________. a. male/female differences b. male aggression c. exaggerated traits d. all of the above
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