Rhizoids
It helps to hold a structure so it will not sink to the ground.
cyphallus
Cholooplast helps to maintain the cells structure.
No. Only in bryophytes (mosses, hornworts, and liverworts) is the gametophyte dominant. In advanced plants, the sporophyte is dominant. The gametophyte in angiosperms is a tiny part buried w/in the flower. Hope this helps.
level
It sets the tone of the poem. Structure helps the reader follow along. Finally structure helps mandate the theme and your style.
It helps to hold a structure so it will not sink to the ground.
An adaptation is a structure or behavior that helps an organism meet its needs for survival.
I 
it helps your body have its structure.
cyphallus
its body structure helps them hunt successfully
The antibodies help the white blood cells to detect and identify foreign particles, by attaching to the anti genes.
Where do you see triangulation used in this structure. Explain how triangulation helps to make head frame structure stronger
Its beak helps the squid bite its food.
Cholooplast helps to maintain the cells structure.
This structure in this link ain't much convincing, but it helps giving ideas.