2. Which group of invertebrates has a body plan that allows for gas exchange directly with the environment? A. cephalopods B. insects C. flatworms D. all of the above 3. The __ is the inner layer of cells of an early embryo that gives rise to the digestive tract. A. mesoderm B. ectoderm C. endoderm D. mesoglea 4. Which group of invertebrates has a segmented body and jointed appendages? A. insects B. crustaceans C. arachnids D. all of the above 5. The tail or rear of an animal is called its __ . A. dorsal side B. ventral side C. posterior end D. anterior end 6. The head or front of an animal is called its __ . A. posterior end B. ventral side C. anterior end D. dorsal side 7. The __ is the cavity that forms within the mesoderm. A. mesoglea B. coelom C. pseudocoelom D. protostome 8. __ are animals that can produce both sperm and eggs. A. Males B. Blastulas C. Hermaphrodites D. Females 9. Cephalization is the concentration of sensory structures in the __ of an animal. A. ventral side B. bilateral side C. posterior D. head 10. The __ is the middle layer of cells of an early embryo that gives rise to muscles and bones. A. endoderm B. mesoglea C. mesoderm D. ectoderm
Added by Michael W.
Close
Step 1
Step 2: The inner layer of cells of an early embryo that gives rise to the digestive tract is the endoderm. Step 3: The group of invertebrates that has a segmented body and jointed appendages is all of the above (insects, crustaceans, arachnids). Step 4: The tail Show more…
Show all steps
Your feedback will help us improve your experience
Dominador Tan and 77 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
1. Which phylum has 2 openings for its digestive system? A) Platyhelminthes B) Cnidaria C) Chordata D) Porifera 2. Which is not a member of Cnidaria? A) Coral B) Sea anemone C) A cat D) Jellyfish 3. How do sponges eat? A) Use hands B) Use jaws C) Use tentacles D) Filter feeding 4. Which is the mobile form of Cnidaria? A) Stipe B) Polyp C) Larvae D) Medusa 5. Which phylum was the first to have bilateral symmetry? A) Chordata B) Platyhelminthes C) Arthropoda D) Cnidaria 6. If I found an animal near the San Gabriel River natural trail that had 4 legs and a tail, it would belong to phylum ___. A) Platyhelminthes B) Arthropoda C) Cnidaria D) Chordata 7. If I found an animal with an exoskeleton and 8 legs (that are jointed), what phylum does it belong to? A) Arthropoda B) Porifera C) Chordata D) Platyhelminthes
Maitreya E.
1/ Only about 5 percent of animals have a backbone, and these species are called vertebrates. The majority of animals lack a backbone and are called invertebrates. 2/ Which of the following is NOT a characteristic shared by all animals? A. They are motile for at least part of their life cycle. B. They are multicellular organisms. C. They take food into their body to digest and absorb the released nutrients. D. Their cells possess cell walls. 3/ Which of the following are environmental factors that gave rise to the Cambrian explosion? Select all that apply. A. Development of new traits from predator-prey interactions. B. Movement of the supercontinent Gondwana caused a separation of landmasses. C. The global climate warmed, and the amount of oxygen in the seas increased. D. Mutations in homeotic genes facilitated the emergence of novel structures and body plans. 4/ Animals such as cnidarians are radially symmetrical; their body parts are repeated around a central axis, like wheel spokes. Other animals are bilaterally symmetrical, with the body divided into right and left halves with body parts repeated on either side of the body. 5/ Which of the following is a characteristic of sponge digestion that distinguishes them from cnidarians? A. They must fully digest a meal and excrete any wastes before ingesting the next meal. B. They possess a gastrovascular cavity. C. They are not filter feeders. D. Their digestive process is intracellular.
Which of the following are the features of chordates? (1) Notrchord is present. (2) CNS is dorsal, hollow and single. (3) Pharynx is perforated by gill slits. (4) Heart is ventral. (5) A post-anal is present (a) All except (4) (b) All except (2) (c) All of these (d) All except (5)
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD