Can an unfertilised, apomictic embryo sac give rise to a diploid embryo? If yes, then how?

In a fertilised embryo sac, the haploid, diploid and triploid structures are:

Arrangement of nuclei in normal di cot embryo sac is

The embryo sac of an Angiosperms is made up of

Embryo sac is to ovule as -----is to an anther.

State whether the following statements are true or false. Correct the false statements. Each embryo sac consists of two haploid egg cells and one haploid polar nuclei.

Synergids of the polygonum type of embryo sac

Describe the structure of an embryo sac.

Embryo sacs of some apomictic species appear normal but contain diploid cells/Suggest a suitable explanation for the condition.

Name the different cells of the Embryo sac of Angiosperms and state their role.

With a neat, labelled diagram, descrine the parts of a mature angiosperm embryo sac. Mention the role of synergids.