A reptile is a mammal that lives on land with scales whereas an amphibian is a creature that lives in both land and water so has gills but grows lungs as it ages
D) Mitochondria because muscle cells require more ATP (energy).
Polar bodies are considered byproducts of oogenesis. They are lacking cytoplasm and are much smaller than a regular egg cell. Typically they disintegrate after meiosis. It is unlikely for the resulting zygote to become a healthy embryo because the polar body was never meant to get fertilized. Therefore it is most likely lacking nutrients, and does not have the necessary resources for a healthy baby to develop.
Hope that helped you.<span />
