Question : Which group of Kingdom Animalia has unsegmented, bilaterally symmetrical, soft bodies, with a triploblastic construction (comprising three layers of cells) and a lacking coelom, skeleton and anus?
Option 1: Cnidaria
Option 2: Ctenophora
Option 3: Platyhelminthes
Option 4: Porifera
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Correct Answer: Platyhelminthes
Solution : The correct answer is Platyhelminthes.
The group of Kingdom Animalia with unsegmented, bilaterally symmetrical, soft bodies, with a triploblastic construction and a lacking coelom, skeleton and anus is the phylum Platyhelminthes, also known as flatworms. Flatworms are a different group of about 25,000 species found in freshwater, marine, and land settings. They are normally tiny, ranging in length from a few millimetres to several metres.
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Question : Animals in which the cells are arranged in three embryonic layers are called_____.
Option 1: Diploblastic
Option 2: Ectoderm
Option 3: Triploblastic
Option 4: Endoderm
Question : What cells help in osmoregulation in Platyhelminthes?
Option 1: Nerve cells
Option 2: Flame cells
Option 3: Gangla
Option 4: Hooks
Question : Which of the following cells line the spongocoel and canals in members of the phylum Porifera?
Option 1: Somatic cells
Option 2: Collar cells
Option 3: White cells
Option 4: Sex cells
Question : Identify animals that are not triploblastic.
Option 1: Molluscs
Option 2: Chordates
Option 3: Coelenterates
Option 4: Platyhelminthes
Question : Which of the following animals have a single opening in their digestive system that serves both as a mouth and an anus?
Option 1: Arachnids
Option 2: Echinoderms
Option 4: Arthropods
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