Which group of animals is viviparous?

Define metameric segmentation. In which group of animals it is found?

Which of the following animals is not viviparous?

Which group of animals has stomochord?

Presence of canal system and spicules as skeleton are characteristics of which group of animals ? Give two examples.

Which group of animals belong to the same phylum?

Which group of animals belong to the same phylum?

In the pie charts (A) and (B) drawn below to show the global animal diversity, which groups of animals would you name and write on the the areas shaded black in (A) and (B). In which kind of habitat would you find this groups of animals?