EBK WHAT IS LIFE? A GUIDE TO BIOLOGY
4th Edition
ISBN: 9781319159153
Author: PHELAN
Publisher: VST
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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
Which of the following is responsible for the process of filter feeding in a sponge?
a. flame cells
b. cnidocytes
c. collar cells
d. mesoglea
Chapter 13 Solutions
EBK WHAT IS LIFE? A GUIDE TO BIOLOGY
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- If the lateral cilia of pterobranch tentacles are inactivated what would be the likely consequence? Group of answer choicesarrow_forwardYou 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_forwarda) Gill lice infections result in lowered surface area to volume ratios in fish gill structure. True False Levels of carbon dioxide in the blood will not differ between infected and uninfected fish. Question options: True False The branched nature of capillaries in fish gills increases surface area, and thus the efficiency of exchange into/out of the blood stream lation. Question opti True Falsearrow_forward
- The 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_forwardTapeworms differ from other flatworms in that for movement: O a. They have well-developed muscles for active movement. O b. They can attach by hooks and a ring of suckers, but otherwise have little activity. O c. They permanently glue themselves in a fixed position. O d. They have a pair of suckers that can attach and release. O e. They move slowly by passing waves of muscular contraction along their body.arrow_forwardWhich 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_forward
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