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FREE BIOLOGY AND STUDY GAMES ABOUT BIO CHAPTER
21 EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -50 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: What vertebrate group is characterized by four-chambered hearts, feathers, and endothermy?
Answer:
birds
Question 2: The invertebrate chordates are the?
Answer:
tunicates and lancelets.
Question 3: One advantage of having a coelom is?
Answer:
flexibility in movement.
Question 4: Animals arose from a type of flagellated?
Answer:
protist
Question 5: What are monotremes?
Answer:
are mammals that lay eggs, such as the duck-billed platypus.
Question 6: What is a vascular water system?
Answer:
a series of enclosed, water-filled canals that end in hollow tube feet.
Question 7: Select all of the following that are in the group Bilateria.
Answer:
-chordates -flatworms -roundworms -arthropods
Question 8: What are Tuataras?
Answer:
are reptiles that closely resemble lizards, all
Question 9: What group contains 60,000 species, most of which are vertebrates?
Answer:
Chordates
Question 10: Select all of the characteristics of Phylum Echinodermata.
Answer:
-deuterostome development -radial symmetry in adults -bilateral symmetry in larvae -closest animal relatives to chordates
Question 11: What animals have a pseudocoelom?
Answer:
roundworms
Question 12: Select the four distinguishing features that all chordates have at some time during their lives.
Answer:
-postanal tail -notochord -dorsal, hollow nerve cord -pharyngeal pouches or slits
Question 13: What are cephalopods?
Answer:
organisms that has arms connected to a head structure; squids, nautilluses, and octopuses
Question 14: Arthropods are characterized by?
Answer:
protostome development and jointed appendages.
Question 15: What are some advantages to having more heart chambers?
Answer:
The more heart chambers, the better the separation of oxygen- rich blood from oxygen-poor blood, and the greater the efficiency with which blood delivers oxygen.
Question 16: Select all the chordates that have a cranium.
Answer:
-vertebrates -hagfish
Question 17: Swim bladders and lungs evolved from outgrowths of the
Answer:
Esophagus
Question 18: Select all the characteristics of earthworms.
Answer:
-bristles on each segment -ingest soil and eliminate indigestible particles -saddlelike cocoon near head to protect eggs
Question 19: taxonomic rank that consists of bilateral symmetry, protostomes, have characteristic larvae and DNA sequences
Answer:
Lophotrochozoa Question 20: taxonomic rank that consists of bilateral symmetry; mouth arises from second opening in embryo?
Answer:
Deuterosomes
Question 21: What are gastropods?
Answer:
organisms that crawl on a broad, flat foot; nudibranchs, limpets, snails, and slugs
Question 22: Grasping, clawlike mouthparts of spiders and scorpions are called?
Answer:
chelicerae Question 23: What mammal group is currently the most diverse and is also called the eutherians?
Answer:
placentals Question 24: Mostly marine animals with radial symmetry, two germ layers, and stinging cells are called ______, which include jellyfishes, hydras, corals, and sea anemones.
Answer:
cnidarians
Question 25: What are Caecilians?
Answer:
are unusual amphibians: their bodies lack limbs. Thus,
they resemble giant earthworms
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