Question

A) Which structure is unique to vertebrates? (1 point)
limbs
brain
skin
backbone
A) Vertebrate embryos (1 point)
develop the same structures at different rates.
go through the same developmental stages at the same rate.
go through the same developmental stages at different rates.
develop different structures at the same rate.

Question 3
Question 4
A) Which is a similarity between a fish embryo and a bird embryo in the early stages of development? (1 point)
forelimbs
jaw bones
gill slits
hindlimbs
A) What is a similarity between a fish embryo and a human embryo in the late stages of development? (1 point)
They both have arms.
They both have tails.
They both have gills.
They both have spines.

Answer 1

1) Backbone

2) develop the same structures at different rates.

3) gill slits

4) They both have spines.