What is stomochord? In which group is it formed?

stomochord is found in

Which of the following groups is formed only of the hermaphrodite organisms ?

Which of the following group is formed of only the hermaphordite organisms?

An element X from group 2 reacts with element Y from group 16 of the periodic table. (a) What is the formula of the compound formed? (b) What is the nature of bond in the compound formed?

Which group of animals has stomochord?

Stomochord is a hollow outgrowth which arises from the roof of the buccal cavity. It is present in