First slide

Classification of Animals

Question

Which of the following is wrong with reference to flatworms?

Moderate

A

Acoelomate animals with organ level of organisation.
B

Specialised cells called flame cells help in osmoregulation and excretion.
C

Dorso-ventrally flattened animals with radial symmetry.
D

Fertilisation is internal and development includes many larval stages

Solution

The characters of Flatworms:.
1. Flatworms are bilaterally symmetrical, triploblastic and acoelomate animals with organ level of organisation,
2. Specialised cells called flame cells help in osmoregulation and excretion,
3. Flatworms have dorso-ventrally flattened body, hence are called flatworms,
4. Fertilisation is internal and development includes many larval stage.

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