REVIEW & REHEARSE 25 REPRODUCTION and DEVELOPMENT
!ques1! <i>Check Your Knowledge</i>
Question 25.15
Some animals are primarily asexual in their reproduction, but have the ability to switch to sexual reproduction under certain conditions. What might be the adaptive advantage to an animal that generally reproduces asexually to also be able to reproduce sexually?
- a) to increase the genetic diversity of its offspring during periods of stress
- b) to confuse its predators
- c) to give the animal some variety in its life
- d) to increase its own likelihood of survival
- e) Both a) and d) are correct.
Question 25.16
Amplexus is a tactic that occurs in most species of frogs. The most likely reason that this tactic has evolved is:
- a) the gametes of terrestrial animals can quickly dry out in non-
aquatic environments. - b) it enables internal fertilization to occur without the necessity of viviparity.
- c) it ensures that the sperm and eggs are released at the sametime and in the same place, increasing the likelihood of fertilization.
- d) it reduces the negative effect of salt water on gametes.
- e) All of the above are correct.
Question 25.17
Meiosis occurs in the _____ in female humans and in the _____ in male humans.
- a) follicles; seminiferous tubules
- b) somatic cells; germ cells
- c) uterus; prostate gland
- d) follicles; prostate gland
- e) Fallopian tube; vas deferens
