Which arthropods are a part of the class maxillopoda? And

What are hexapods distinguishing characteristics?

a) Maxillopoda is a diverse class of crustaceans including barnacles, copepods and a number of related animals. It does not appear to be a monophyletic group, and no single character unites all the members

b) General Characters of Hexapoda (Insects)

Ø A large taxa, includes insects and a small group of wingless arthropods.

Ø Body plan: 3 parts, head, thorax and abdomen.

Ø Head with six segments.

Ø Thorax with three pairs of jointed legs (hence the name hexapoda)

Ø Head bears a presegmental acron.

Ø Acron bears compound eyes.

the answer for this question would be d. glaciers

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.