The correct answer to this question is <span><span>horse and zebra.
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The </span><span>animal pairs that you would expect to have the most similar embryonic development </span>are the horse and the zebra because of the reason that they are from of the same order.
If you were to compute this, Angle C should be equal to 100°.
In a triangle, all angles sum up to 180°.
In triangle ABC, where the m∠A =30° and m∠50°:
m∠A + m∠B + m∠C = 180°
30° + 50 + m∠C = 180°
80° + m∠C = 180°
m∠C = 180° - 80°
m∠C = 100°
The triangle should look like the picture attached.
An animal without a backbone is known as an invertebrate. A vertebrate is n animal that has a spine. And I am pretty sure polyp and hermaphrodite have really nothing to do with the backbone. Hope this helped!