Question

list 4 characteristics of phylum platyhekminthes ​

Answer 1

PHYLUM PLATYHELMINTHES

• This phylum comes under kingdom animalia.

• The members of this phylum have flat body surfaces and are mostly endoparasitic in nature

• This is the first phylum to have organ level of organisation.

• These are the first triploblastic animals having three layers of body wall namely, ectoderm, mesoderm and endoderm.

• The members are bilaterally symmetrical.

• They do not have body cavity called coelom and hence acoelomates.

• Excretory organ is flame cells or solenocytes.

• Some examples are tapeworms, blood fluke and liver fluke.

Answer 2

Answer :-

Characteristics of phylum platyhelminthes -

• Generally called as flatforms

• Bilaterally symmetrical, triploblastic, dorsoventally flattened.

• Acoelomates

• Their digestive cavity has a single opening with mouth only and anus is absent.

• They have flame cells or proronephridia.

• Mode of nutrition is parasitic.
• Reproduction is of both types i.e. asexual and sexual.

• These are hermaphrodite i.e. male and female reproductive organs are present in same animal.

• e.g. - Planaria, Fasciola ( liver fluke ) , taenia solium , blood fluke