Question 1 : The special membranes that support these eggs are traits of all ________ , including mammals .
Question 2 : Fish eggs, such as these ________ eggs are often transparent and fertilized after laying
Question 3 : The most common reproductive strategy for ________ is known as oviparity , in which the female lays undeveloped eggs that are externally fertilized by a male.
Question 4 : Platypuses and two genera of echidna are Australian ________ .
Question 5 : Among mammals, early extinct species laid eggs, as do platypuses and ________ (spiny anteaters).
Question 6 : ________ and placental mammals do not lay eggs, but their unborn young do have the complex tissues that identify amniotes.
Question 7 : A few fish, notably the rays and most ________ use ovoviviparity in which the eggs are fertilized and develop internally.
Question 9 : A baby ________ emerges from its egg.
Question 10 : Eggs are common among invertebrates, including insects , mollusks , and ________ .