BIO 1407 CH. 33 – Flashcards

The animal phylum most like the protists that gave rise to the animal kingdom is _____

One should expect to find cilia associated with the feeding apparatus of _____.

Sponges _____. have feeding cells called dinoflagellates have a nerve net but not a central nervous system are the simplest diploblastic animals have larvae which are motile and move via the motion of cilia

Which of the following is most likely to be aquatic? fluid feeder deposit feeder suspension feeder mass feeder

Comb jellies may not be the most familiar animal to you, but they are critical in the food chain because they make up a significant portion of the planktonic biomass. Their feeding strategy is predatory and involves adhesives or mucus on their tentacles or other body parts. What feeding tactic do these animals use?

Which of the following can be found in the mesohyl of a sponge? 1. amoebocytes 2. spicules 3. spongin 4. zygotes 5. choanocytes

Which of the following is a characteristic of cnidarians? mesoderm an anus radula bilateral symmetry gastrovascular cavity

Most cnidarians are known to produce toxins. In fact, it has been claimed that one particular species produces the most deadly of all toxins on the planet. What feature of this group most likely evolved simultaneously with the evolution of these toxins?

In terms of food capture, which sponge cell is most similar to the cnidocyte of a cnidarian?

One day, Tommy, a student in an undersupervised class of forty fifth graders, got the urge to pet Nemo (the clownfish), who was swimming among the waving petals of a pretty underwater "flower" that had a big hole in the midst of the petals. Tommy giggled upon finding that these petals felt sticky. A few hours later, Tommy was in the nurse's office with nausea and cramps. Microscopic examination of his fingers would probably have revealed the presence of _____.

Which of the following is characteristic of the phylum Platyhelminthes? They typically reproduce asexually. They are dorsoventrally flattened. They are radially symmetrical. They are all parasitic. They are diploblastic.

Ectoprocts and brachiopods are collectively referred to as _____.

Members of the phylum Mollusca _____.

Which of the following is true of annelids? They have pseudocoeloms. They have an open circulatory system. They have a nerve net. They perform gas exchange across their skin. They have a gastrovascular cavity.

A marine biologist dredges up a small animal from the bottom of the ocean. It is uniformly segmented, with short, stiff appendages and soft, flexible skin. It has a complete digestive system and a closed circulatory system, plus multiple true coeloms. Based on this, you determine that the animal must be a(n) _____.

You find what you believe is a new species of animal. Which of the following characteristics would enable you to argue that it is more closely related to a flatworm than it is to a roundworm?

What would be the best anatomical feature to look for to distinguish a gastropod from a chiton?

What would be the most effective method of reducing the incidence of blood flukes in a human population?

Planarians lack dedicated respiratory and circulatory systems because _____.

Which one of these mollusk groups can be classified as suspension feeders? gastropods cephalopods chitons bivalves

What structure is responsible for gas exchange in most spiders?

Nematodes and arthropods both _____.

Arthropod exoskeletons and mollusk shells both _____.

You find a multi-legged animal in your garden and want to determine if it is a centipede or a millipede. You take the animal to a university where a myriapodologist quickly tells you that you have found a centipede. Which of the following may have allowed her to make this distinction?

All arthropods _____. 1) undergo complete metamorphose 2) have jointed appendages 3) molt 4) have segmented bodies 5) have an exoskeleton or cuticle

Which of the following are thought to be most closely related to humans? snails sea stars jellies earthworms ants

The water vascular system of echinoderms _____.

Which of the following animal groups is entirely aquatic? Mollusca Echinodermata Crustacea Nematoda

Which phylum is characterized by animals that have a segmented body?

Select the correct statement(s) about invertebrate taxa. Ectoprocts lack a distinct head. Tapeworms lack a mouth and gastrovascular cavity. Rotifers are smaller than many protists.

Select the correct statement(s) describing nematodes. -Some nematodes play important roles in nutrient cycling. -Nematodes lack a circulatory system and circular body wall muscles. -All nematodes live in soil.