The nucleus is filled with protons and neutrons, usually depicted as spheres. you are thinking of a nucleus in an atom (chemistry). in biology, the rod-shaped structures inside the nucleus is the chromosome, the genetic material of the cell.hey are rod shaped bodies that lie at right angles to each other; internally they are made up of fine microtubules. â¦ Centrioles are best known for their role in generating microtubules, and during cell division, the centrioles diret the formation of the mitotic spindle. 2 people found this useful.
Giant Barrel sponge is one of the largest sponge's species found in the Caribbean. Barrel sponges are hermaphrodites. They have several methods of reproduction. Giant Barrel sponges can reproduce both sexually and asexually, for example if a piece of the sponges is broken off a new one will begin to grow.iant Barrel sponge is one of the largest sponge's species found in the Caribbean. Barrel sponges are hermaphrodites. They have several methods of reproduction. Giant Barrel sponges can reproduce both sexually and asexually, for example if a piece of the sponges is broken off a new one will begin to grow.
Included are the yellow tube sponge, Aplysina fistularis, the purple vase sponge, Niphates digitalis, the red encrusting sponge, Spiratrella coccinea, and the gray rope sponge, Callyspongia sp. Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells.