A patient suffering from abdominal pain visits a doctor. After operation, a worm is removed from the intestine of the patient. The doctor examines the worm and declares it to be a Platyhelminthes. What features made him to declare that the worm belongs to Platyhelminthes category?

The organism had a flat head and body

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The organism is bilaterally symmetrical

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The organism has three layers of cell

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All the above

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Solution

The correct option is D
All the above

The most salient features of Platyhelminthes are bilateral symmetry, triploblasty (three layers in the body wall), and a flat (ribbon like) head and body.

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Q. Animals belonging to phylum Platyhelminthes are also called flat worms because

A worm X found in freshwater and slow-moving streams has been accidentally cut into three pieces. It was observed that in due course of time, each cut piece of the worm develops to become a complete worm by growing all the missing parts.
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(b) Name another organism Y that possesses the same characteristic of growing fully from its cut body parts.
(c) What is the name of this process in which a complete organism is formed from its cut body part?
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(e) Can a dog be produced completely from its cut body part (say, a cut tail) just like organisms X and Y? Why?

Q. Organisms belonging to phylum Platyhelminthes have ___ layers of cells from which differentiated tissues can be formed.

Q. Platyhelminthes are bilaterally symmetrical organisms.

Q. A doctor advises a patient to eat more yellow fruits, carrots and butter. The patient seems to be suffering from

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A patient suffering from abdominal pain visits a doctor. After operation, a worm is removed from the intestine of the patient. The doctor examines the worm and declares it to be a Platyhelminthes. What features made him to declare that the worm belongs to Platyhelminthes category?

The correct option is D All the above The most salient features of Platyhelminthes are bilateral symmetry, triploblasty (three layers in the body wall), and a flat (ribbon like) head and body.

The correct option is D
All the above

The most salient features of Platyhelminthes are bilateral symmetry, triploblasty (three layers in the body wall), and a flat (ribbon like) head and body.