Choose the correct option for the following statements:
$(i)$ Birds are oviparous / viviparous animals showing internal fertilization.
$(ii)$ In cartilaginous fishes,gill slits are without operculum / with operculum.

  • A
    $(i)$ Oviparous,$(ii)$ Without operculum
  • B
    $(i)$ Viviparous,$(ii)$ With operculum
  • C
    $(i)$ Oviparous,$(ii)$ With operculum
  • D
    $(i)$ Viviparous,$(ii)$ Without operculum

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Similar Questions

Consider the following three statements $(A-C)$ and select the option which includes all the correct ones only:
$(A)$ The earthworm shows metameric segmentation.
$(B)$ Platyhelminthes shows organ level of body organisation.
$(C)$ In Aschelminthes,mesogloea is present between ectoderm and endoderm.

$A$ mature Hydra usually bears

In which phyla of animals is an open circulatory system found?

Match the following columns:
Column-$I$Column-$II$
$I.$ Skin without scales$p.$ $Catla$
$II.$ Placoid scales$q.$ $Hagfish$
$III.$ Cycloid scales$r.$ $Chameleon$
$IV.$ Epidermal scales$s.$ $Ray-fish$

Differentiate between Phylum Platyhelminthes and Phylum Aschelminthes.

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