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

its been noted for the past decade or so that there is some (approximately 5% to 7%) shrinkage in the brains of people who have schizophrenia, most notably in the gray matter, which is an important part structures in the brain’s amygdala, hippocampus and parahippocampus, which are all involved in memory storage and retrieval memory storage and retrieval.

explanation:

ive read articles

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.

i think this picture will you.