Aquatic animals that rely on external fertilization for reproduction have a low probability of successful fertilization. Which of the following is a mechanism used to increase the liklihood of successful external fertilization?
A. courtship rituals to synchronize male/female gamete release
B. depositing sperm into the female reproductive tract
C. production of extremely large number of gametes that are released simultaneously
D. containment of sperm within spermatophores
Ans:
A. courtship rituals to synchronize male/female gamete release
C. production of extremely large number of gametes that are released simultaneously
You might also like to view...
Which of the following is NOT a surviving phylum of gymnosperms?
A. Cycadophyta B. Ginkgophyta C. Gnetophyta D. Lycophyta E. Coniferophyta
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
Many patients who have a certain blood clotting disorder in which the blood clots too readily have a mutation in the promoter of a gene. This mutation most likely
A) deletes a gene for a clotting factor. B) blocks transcription of a clotting factor. C) increases susceptibility to a specific viral infection. D) increases the transcription rate of a particular clotting factor gene.
How do mitochondria differ from chloroplasts
What will be an ideal response?