Which of the following statements is incorrect?

  • A
    Prawns have two pairs of antennae.
  • B
    Cnidoblasts are a characteristic feature of the phylum Cnidaria.
  • C
    In millipedes,each segment has two pairs of appendages.
  • D
    Animals of the phylum Porifera are exclusively marine.

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Similar Questions

Match the following group of organisms with their respective distinctive characteristics and select the correct option:
Organisms Characteristics
$(a)$ Platyhelminthes $(i)$ Cylindrical body with no segmentation
$(b)$ Echinoderms $(ii)$ Warm-blooded animals with direct development
$(c)$ Hemichordates $(iii)$ Bilateral symmetry with incomplete digestive system
$(d)$ Aves $(iv)$ Radial symmetry with indirect development

Match List $I$ with List $II$ :
List $I$List $II$
$A$. Pterophyllum$I$. Hag fish
$B$. Myxine$II$. Saw fish
$C$. Pristis$III$. Angel fish
$D$. Exocoetus$IV$. Flying fish

Choose the correct answer from the options given below :

Select the correct match for Column $X$, Column $Y$, and Column $Z$:
Column $X$Column $Y$Column $Z$
$(1)$ Water vascular system$(A)$ Porifera$(p)$ Starfish
$(2)$ Proboscis$(B)$ Hemichordata$(q)$ Sepia
$(3)$ Canal system$(C)$ Mollusca$(r)$ Hyalonema
$(4)$ Shell$(D)$ Echinodermata$(s)$ Balanoglossus

Difficult
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Choose the correct option for the following statements:
$(i)$ Metamerism is a characteristic feature of $Annelida$ / $Arthropoda$.
$(ii)$ Internal buds in sponges are called $Gemmules$ / $Gemmi$.

Cold-blooded animals are those having

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