3. Which of the following statements is true about the worm phyla? Annelida and Nematoda phyla are the simplest of all worms while Platyhelminthes are complex worms

most annelids are free-living animals, but most flatworms and roundworms are parasites

Annelida, Platyhelminthes, and Nematoda all have animals with a coelom

many annelids are parasites, but flatworms and roundworms help fertilize the soil

Which element provides strength to the exoskeleton of clams and oysters

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)