Which one of the following statements is not correct?

  • A
    All echinoderms are viviparous
  • B
    Roundworm has no circulatory system
  • C
    In bony fishes,swim bladder is usually present
  • D
    In cartilaginous fishes,fertilization is internal

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Similar Questions

Match the following columns:
Column-$I$Column-$II$
$A$. Physalia$1$. Liver fluke
$B$. Taenia$2$. Sycon
$C$. Fasciola$3$. Tapeworm
$D$. Scypha$4$. Portuguese man-of-war

Select the correct matching sequence:

In which animal phyla is metameric segmentation observed?

Mention two similarities between:
$(a)$ Aves and mammals
$(b)$ $A$ frog and crocodile
$(c)$ $A$ turtle and Pila

Which of the following statements are true/false?
$(i)$ In $Torpedo$,the electric organs are capable of generating strong electric shock to paralyze the prey.
$(ii)$ Bony fishes use pectoral,pelvic,dorsal,anal,and caudal fins in swimming.
$(iii)$ Amphibian skin is moist and has thick scales.
$(iv)$ Birds are poikilothermic animals.
$(v)$ The most unique mammalian characteristic is the presence of milk-producing mammary glands by which the young ones are nourished.

Which of the following sets of animals is correctly matched with its respective phylum/class?

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