Frog eggs most closely resemble

Question

A.  chicken eggs.
B.  fish eggs.
C.  platypus eggs.
D.  alligator eggs.

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?

Gather Content
· What do you already know about eggs?

Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?

Reflect on Process
· 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?

Answer 1

B.  fish eggs.

Clarify Question
· What is the key concept addressed by the question?
        o This question addresses eggs.
· What type of thinking is required?
        o This question is asking you to take what you already know and apply it to this unfamiliar situation.

Gather Content
· What do you already know about eggs?
        o Both fish and amphibians’ eggs must be laid in water or a moist setting to avoid drying out.
        o Most reptiles lay watertight “amniotic” eggs: eggs that contain yolk and a series of four membranes. All modern reptiles, as well as birds and mammals, share these membranes and are called amniotes.
        o Each membrane of the amniotic egg plays a role in making the egg an independent life-support system. The outermost membrane of the egg is the chorion, which lies just beneath the porous shell. It allows exchange of respiratory gases but retains water. The amnion encases the developing embryo within a fluid-filled cavity. The yolk sac provides food from the yolk for the embryo via blood vessels connecting to the embryo’s gut. The allantois surrounds a cavity into which waste products from the embryo are excreted.

Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
        o Because both fish and amphibians lack the features of the amniotic egg, their eggs are more similar to each other than to eggs of any of the amniotes (reptiles, birds, and mammals).

Reflect on Process
· 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?
        o The question required you to take what you already know and apply it to this unfamiliar situation.
        o Did you recognize that fish and amphibian eggs lack the innovations of the amniotic egg?