Question

What is a blastocyst?

a two-celled developing structure

a sphere of cells surrounding a hollow center

a solid mass of about one thousand cells

a zygote covering to prevent sperm from entering

Answer 1

Any ideas?

Answer 2

nope walk me through it

Answer 3

plzz

Answer 4

Embryonic Development:
process
gamete fertilization -> cleavage -> cellular differentiation -> cavitation -> gastrulation -> organogensis -> growth

products
egg+sperm -> zygote -> morula -> blastula -> blastocyst -> triplobast grastula -> further enlargement.

the blastula which eventually leads to blastocyst forms after cavitation of the solid morula. cavitation would leave a hollow center along with inner cellular mass.

Answer 5

i got it thx tho