3. if you locate an animal that has segmentation and cephalization as well as deuterostome embryonic
development, which phylum will this animal belong to?
a. arthropods
b. chordates
c. annelids
d. sponges
6. which of the following accurately describes the angiosperm plant life cycle?
a. the ovule develops into an anther.
b. the embryo develops into a seedling.
c. the ovary is haploid.
d. the anther produces eggs.
8. unlike sexual reproduction, vegetative reproduction
a. produces offspring by mitosis.
b. is dependent on fertilization.
c. needs gametes.
d. requires flowers.

So, I decided to take another whack at this, specifically number 3, and at first I didn't really try to answer 'cause I have no clue what the word dueterostome means, but I do know that, for the other two criteria, A, arthropods is the only one that fits both. 
also, on 6, it is b, because I remembered what an anther is and it has nothing to do with the eggs (it's the testes,  pretty much) 
and if I had to guess at 8, I would say it is d because all the others are characteristics of sexual reproduction. (I'm not sure of this, though, because I'm not sure where this defines the line for mitosis, both go through it, but at different points in the process, so I assume it isn't that one.)

3. Should be Anthropods. 
6. The embryo develops in a seedling. 8. Should be dependent on fertilization. 

Sorry its not enough info