WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
5th Edition
ISBN: 9781319487317
Author: PHELAN
Publisher: INTER MAC
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Chapter 13, Problem 2MC
Summary Introduction
Introduction:
Cnidaria is a phyllum that includes jellyfish, sea anemones and corals.
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Matching:
(23-27) Match the specialized cell/organ to its function:
23
Colloblast
24.
Choanocyte
25
Spicule
26.
Osculum
27)
Cnidocyte
A. structural support
B. water exits sponge
here
C. stinging cell with poison barb
D. sticky cell to capture food
E. filters food out of water in sponges
Which of the following factors allows plethodontid (lungless) salamanders to survive and thrive
using only their body surface for oxygen uptake?
A. Their small size
B. The fact that they are ectothermic
C. Their thin, permeable integument (skin)
D. The relatively high solubility of O₂ in air
E. All of the above
How do body structures and functions of a flatworm compare with those of a cnidarian for
a. sensory responses to the environment?
b. arrangement of the nervous system?
c. obtaining food?
d. movement?
e. excretion of body wastes?
Chapter 13 Solutions
WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
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- Which of the following is responsible for the process of filter feeding in a sponge? a. flame cells b. cnidocytes c. collar cells d. mesogleaarrow_forwardArchaeocytes are associated witha. digestion in bacteria.b. the digestive tracts of sponges.c. the filter organs of continuous feeders.d. the human appendix.e. the ingestion and distribution of food in sponges.arrow_forwardWhich of the following in sponges form the outermost epithelium-like layer that is in contact with the external, aquatic environment? a. Pinacocytes and choanocytes b. Pinacocytes only c. Choanocytes and collencytes d. Pinacocytes and collencytes e. Choanocytes only f. Collencytes onlyarrow_forward
- You are confronted with two worms that, on first glance, appear to be very similar. Upon closer examination, however, you note one difference that allows you to identify one specimen as an earthworm and the other as a roundworm. That key characteristic is: A. The presence of a gastrovascular cavity B. The presence of a body cavity C. The presence of a muscle layer around the digestive tract D. The absence of a specialized gas exchange surface E. None of the characteristics listed above would allow an earthworm to be distinguished from a roundwormarrow_forward8. What is the difference between an open and a closed circulatory system? 9. What is a radula? What is it used for? 10. Define regeneration. 11. Identify distinguishing traits of most arthropods. 12. What is molting? Why does it occur? 13. Name three arthropod head appendages and state their functions. 14. Describe two structures that allow arthropods to breathe air.arrow_forwardThe sea slugs (nudibranches) may protect themselves by using which of the following methods? a. They use camouflage. b. They use defensive weapons taken from their prey (toxins and nematocysts). c. They make and secrete distasteful substances. d. They hide in their shells. e. Their raspy radula may be used as a defense organ to injure potential predators.arrow_forward
- Which of the following conclusions is supported by the diagram and the data table? Number of cell types Platyhelminthes 30 Cnidaria 34 Nematoda 38 A. Platyhelminthes has the greatest complexity, and it is more closely related to Nematoda than to Cnidaria. B. Nematoda has the greatest complexity, and it is more closely related to Platyhelminthes than to Cnidaria. C. Cnidaria has the greatest complexity, and it is more closely related to Platyhelminthes than to Nematoda. D. The complexity is equal among all three groups, but Platyhelminthes is more closely related to Cnidaria than to Nematoda.arrow_forwardThe epitheliomuscular cells found in cnidarians anticipate the muscular system of more complex animals. The absence of muscle tissue in cnidarians primarily reflects... A. The fact that cnidarians are basal metazoans, having specialised cells but lacking tissues B. The presence of only two germ layers, ectoderm and endoderm, in cnidarian embryos C. The fact that cnidarians lack a nervous system D. The sessile lifestyle observed in all cnidarians E. All of the above explain the absence of muscle tissue in cnidariansarrow_forwardWhich of the following is the correct classification for the following invertebrate animal: A bilateral animal that does not have circulatory or respiratory systems. Their thin structure allows gas diffusion to and from cells. They have an excretory system of flame cells with cilia to direct waste fluid out. Question 21 options: a) Phylum Mollusca, Class Bivalvia b) Phylum Echinodermata c) Phylum Echinodermata d) Phylum Annelida e) Phylum Platyhelminthes f) Phylum Chordata g) Phylum Arthropoda, subphylum Hexapodaarrow_forward
- What is a characteristic of the circulatory systems of arthropods and mollusks that distinguishes them from the circulatory system of echinoderms? They have lungs. They have muscular pumps to circulate the extracellular fluid. They are closed circulatory systems. They have extracellular fluid to transport substances to and from internal organs. They have cilia to circulate the extracellular fluid.arrow_forwardNematodes and nematomorphs have which type(s) of skeletal system? a.) Endoskeleton b.) Endoskeleton and hydrostatic skeleton c.) Endoskeleton and exoskeleton d.) Exoskeleton and hydrostatic skeleton e.) Exoskeleton f.) Hydrostatic skeletonarrow_forwardChoose which is FALSE among the following statements about the anatomy of annelids. A. Earthworms have mouth, teeth, pharynx, crop, gizzard, intestines, and anus. B. Species of leeches have either jaws and teeth or proboscis as mechanisms for bloodsucking. C. Leeches have anterior and posterior suckers, being the later as used for attachment only. D. The cirri is for sensory, while the parapodia is for respiration and locomotion. E. Leeches have a fixed number of metameres of 33-34 Choose which is FALSE among the following statements about the reproduction of annelids. A. Fertilization in leeches is internal, while in the oligochaetes is external. B. The seminal receptacles of each earthworm receive the sperm during copulation. C. Clitellum is visible in leeches only during the reproductive period, while absent in the juvenile stage of earthworms. D. Cocoons are produced by the ovaries to house the developing eggs. E. Organisms of…arrow_forward
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