Phylum platyhelminthes Study guides, Class notes & Summaries
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WSU Biology 106 Exam 3 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES |ALREADY GRADED A+
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WSU Biology 106 Exam 3 
QUESTIONS AND CORRECT 
DETAILED ANSWERS WITH 
RATIONALES |ALREADY GRADED A+ 
Arthropods - ANSWER- Phyla with greatest amount of diversity with 85% of animal spp 
700 million years ago - ANSWER- When the first animals originated 
Porifera (sponges) - ANSWER- Phyla with no tissues, muscles, nerves, or specialized 
organs 
Choanocytes - ANSWER- Flow of water and food acquisition in sponges 
Amoebocytes - ANSWER- Found in sponges, these cells are mobile and perform 
numer...
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DAT Booster Test V (Biology) with 100% Verified Solutions
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DAT Booster Test V (Biology) with 100% 
Verified Solutions 
The way substances and waste in the kidney are removed from the blood is by... - 
CORRECT ANSWER Filtration 
Segmentation is a characteristic of which three phyla? - CORRECT ANSWER 
Arthropoda 
Chordata (Vertebrates) 
Annelida (ex: leech) 
Important examples of organisms in Phylum Echinodermata - CORRECT ANSWER 
Starfish 
Brittle stars 
Sand dollars 
Sea lilies 
Sea urchins 
Sea cucumbers 
Sea daisies 
Important characteristics of Ph...
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WSU Biology 106 Exam 3 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES |ALREADY GRADED A+
- Exam (elaborations) • 14 pages • 2024
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WSU Biology 106 Exam 3 
QUESTIONS AND CORRECT 
DETAILED ANSWERS WITH 
RATIONALES |ALREADY GRADED A+ 
Arthropods - ANSWER- Phyla with greatest amount of diversity with 85% of animal spp 
700 million years ago - ANSWER- When the first animals originated 
Porifera (sponges) - ANSWER- Phyla with no tissues, muscles, nerves, or specialized 
organs 
Choanocytes - ANSWER- Flow of water and food acquisition in sponges 
Amoebocytes - ANSWER- Found in sponges, these cells are mobile and perform 
numer...
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WGU C451/GNC2/1NC1 Integrated Natural Sciences Module 8 Already Passed
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WGU C451/GNC2/1NC1 Integrated Natural Sciences Module 8 Already Passed Explain the concept of natural selection. It is a process where organisms with advantageous traits leave more offspring than organisms with other traits - causing populations to change over time. (key mechanism of evolution) 
variation traits vary from individual to individual 
heritable traits A trait that can be passed on genetically from parent to offspring. 
fitness the number of offspring an organism leaves over its life...
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FTCE Middle Grades Science 5-9 Exam 406 Questions with Verified Answers,100% CORRECT
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FTCE Middle Grades Science 5-9 Exam 406 Questions with Verified Answers 
 
Which of the properties listed below is a characteristic of a liquid but not of a gas? 
A. It has the ability to flow. 
B. It maintains its volume in an open container. 
C. Its molecules are constantly in motion. 
D. Its volume varies depending on temperature. - CORRECT ANSWER B 
 
A 0.100 m3 chamber is filled with oxygen gas at standard conditions (101 kPa at 273 k). Assuming ideal conditions and behavior, what will be t...
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BROOKS BIODIVERSITY UNIT 3 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+
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1 
BROOKS BIODIVERSITY UNIT 3 EXAM | 
QUESTIONS & ANSWERS (VERIFIED) | 
LATEST UPDATE | GRADED A+ 
Plants Architecture 
Correct Answer: Plant needs 
i. collection & conversion of solar energy -> leaves 
ii. positioning & support of leaves -> stems 
iii. anchorage & absorption -> roots 
iv. transport -> vascular system 
Leaf Structure 
Correct Answer: Epidermis, Mesophyll, and Vein (Vascular Bundle) 
Epidermis contains what? 
Correct Answer: - Cuticle 
- Guard cells with Stomata 
...
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Kingdom Animalia: Porifera, Cnidaria, Platyhelminthes, Nematoda Exam Questions and Answers
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Phylum Porifera - ANSWER simple, sessile (permanently attached to one location) sponges; no tissues, organs, mouth or digestive cavity; filter feeders: flagellated collar cells line the large internal cavity and draw water into the sponge (food particles are strained out of the water current by the collar cells which pass food to other sponge cells); acolemate (no colon); no symmetry; most are marine 
 
Phylum Cnidaria - ANSWER class hydrozoa, class scyphozoa, class anthozoa; jellyfish, sea anem...
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BIO 152 FINAL EXAM with correct answers
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Which of the following is not an observation or inference on which natural selection is based? 
a. There is heritable variation among individuals. 
b. Poorly adapted individuals never produce offspring. 
c. Species produce more offspring than the environment can support. 
d. Individuals whose characteristics are best suited to the environment generally leave more offspring than those whose characteristics are less well suited. 
e. Only a fraction of an individual's offspring may survive. 
b. Po...
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FIU Parasitology ZOO 4234 Final review Pt. 2 WITH 100% CORRECT ANSWERS | GRADED A+
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Virulence deals with the consequences of a parasite on the hosts _________. 
a) anatomy 
b) behavior 
c) reproductive success 
d) physiology 
e) all of the above 
Which of the following is not a characteristic of Platyhelminthes? 
a) most are parasitic 
b) dorsoventrally flattened 
c) triploblastic 
d) pseudocoelomate 
e) all of the above 
Which of the following is not a class belonging to the phylum Platyhelminthes? 
a) Turbellaria 
b) Monogenea 
c) Cestoidea
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WSU Biology 106 Exam 3 Questions Marking Scheme
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WSU Biology 106 Exam 3 Questions Marking Scheme 
 
Spongocoel - ANSWER- the large central cavity of sponges. 
 
water enters the spongocoel through tiny pores called ostia and it exits through the large opening called the osculum. 
 
spongocoel is lined with choanocytes which help to create a current in the water. 
 
Spicule - ANSWER- structural elements found in most sponges. They provide structural support and deter predators. 
 
Large ones are called megascleres while microscopic ones are ca...
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