In the anthophyta, the plant seed coat is 2n, and the embryo is 2n. are they genetically identical?
a) yes.
b) no.

The correct answer will be option no.

Explanation:

The anthrophyta is also known as the flowering plants, the phylum which has dominated the vegetation on the earth. This group represents the phylum-angiosperm whose life cycle is divided into two phases- haploid and diploid.

The structure formed after the fertilization is embryo enclosed in ovule is also a diploid structure. This ovule develops into seed enclosing the same embryo which will germinate. Although both embryo and seed coat are diploid cells they are derived differently as the embryo is developed from fertilization and seed coat from the maternal tissue.  

Thus, option no is the correct answer.

"d.) carbon dioxide and hydrogen sulfide"

digestion

it excretes wastes