Differentiate between Phylum Platyhelminthes and Phylum Aschelminthes.

  • A
    Body shape: Platyhelminthes are dorso-ventrally flattened; Aschelminthes are circular in cross-section.
  • B
    Coelom: Both are acoelomate and pseudocoelomate respectively.
  • C
    Digestive system: Platyhelminthes have an incomplete digestive system; Aschelminthes have a complete digestive system.
  • D
    Excretion: Platyhelminthes use flame cells; Aschelminthes use a renette cell or excretory pore.

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Similar Questions

Give the characteristic features of the following,citing one example of each:
$(a)$ Chondrichthyes and Osteichthyes
$(b)$ Urochordata and Cephalochordata

$A$: All higher animals from $Annelida$ onwards possess an organized circulatory system.
$R$: Coelomate organization is observed from $Annelida$ onwards.

Which of the following animals exhibits only extracellular digestion?

Select the correct match for $X$ and $Y$:
Column $X$ (Phylum)Column $Y$ (Example)
$(1)$ Protozoa$(P)$ Bath sponge
$(2)$ Coelenterata$(Q)$ Liver fluke
$(3)$ Porifera$(R)$ Jellyfish
$(4)$ Platyhelminthes$(S)$ Opalina

Select the correct option for the following matches:
$(1)$ Diploblastic$(a)$ Protozoa to Echinodermata
$(2)$ Coelomate$(b)$ Platyhelminthes to Chordata
$(3)$ Triploblastic$(c)$ Coelenterata
$(4)$ Invertebrates$(d)$ Annelida to Chordata

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