Ablastocyst is a a blastocyst is a

cluster of cells surrounding a developing egg in the uterus.
membrane that surrounds and protects a growing embryo in the uterus.
growth that can form in the wall of the fallopian tubes.
hollow ball of cells formed after a fertilized cell undergoes cell division.

hollow ball of cells formed after a fertilized cell undergoes cell division

Explanation:

Blastocyte is the name given to a hollow structure, originating from cell divisions that occur after fertilization. It is an embryo 5 or 6 days old (in some cases 7 days) and composed of approximately 200 cells.

Compared to embryos with fewer days, this embryo has a more differentiated cellular structure, composed of a central cavity (blastocele cavity) and two cell types: the trophoectoderm cells (which later will develop and form the placenta) and the cells of the internal mass (which will form the fetus).

The blastocyst represents the stage of embryonic development prior to implantation in the womb.

mendel's first law states that during the formation of reproductive cells , pairs of hereditary factors for a specific trait separate so that offspring receive one factor from each parent.

explanation:

the overall balanced equation

6co2 + 6h2o > c6h12o6 + 6o2

sunlight energy

where: co2 = carbon dioxide

h2o = water

light energy is required

c6h12o6 = glucose

o2 = oxygen