question_answer

Choose correct statements.

[a] Parturition is induced by a complex neuroendocrine mechanism.

[b] By end of 24 weeks (second trimester), the body is covered with fine hair, eye lids separate an eye lashes are formed.

[c] The blastomers in the blastocyst are arranged into an outer layer called trophoblast Sinner group of eel's attached to trophoblast called the inner cell mass.

[d] The excretion of the acrosome help the sperm inter into the cytoplasm of the ovum through the zone pellucida and the plasma membrane.

A) a                                 

B) b, c

C) a, c, d  

D) All of the these