BIO 172 Pre-Questions Latest Version Graded A+

BIO 172 Pre-Questions Latest Version Graded A+ **What is a spermatheca?** A. Stores male gametes in the male reproductive system B. Sorts viable male gametes from non-viable male gametes C. Delivers male gametes to females D. Stores male gametes in the female reproductive system E. Creates male gametes **Correct Answer:** D. Stores male gametes in the female reproductive system **Where does internal fertilization occur in organisms?** A. Viviparity B. Ovoviparity C. Oviparity D. All of the above E. None of the above **Correct Answer:** D. All of the above **Which statement is true of gastrulation?** A. Four germ layers will develop B. A hollow ball of cells will form at this stage C. The blastula becomes a solid mass of cells D. The mesoderm germ layer will form the nervous system E. Cells of the blastula migrate spatially, resulting in folding upon itself **Correct Answer:** E. Cells of the blastula migrate spatially, resulting in folding upon itself **What is an acrosome?** A. Prevents polyspermy in eggs B. Attracts sperm to eggs C. Prevents polyspermy in sperm cells D. Helps sperm penetrate an egg E. Provides energy for the sperm's flagellum **Correct Answer:** D. Helps sperm penetrate an egg **How does a duck reproduce?** A. Viviparity B. Ovoviparity C. Oviparity D. Spawning E. External fertilization **Correct Answer:** C. Oviparity **What did the experiment by Spemann and Mangold on amphibians in 1924 suggest about animal development?**