Name the group of chordates which are jawless?

Answer the following: Name the two groups of Bryophytes with examples.

Name the two groups of Bryophytes.

Name three groups of plants that bear archegonia. Briefly describe the life cycle of anyone of them.

Name the group of the spores producing plants in which sex organs are concealed.

Answer the following questions: Name the group to which the most reactive metals belong.

Answer the following questions: Name the group containing highly reactive nonmetal only.

State whether the following statements are True or False: Dobereiner named the group of elements having similar properties as Triads.

What are the various factors due to which the ionization enthalpy of the main group elements tends to decrease down a group?

How are chordates further classified?

Which group of chordates possess sucking and cirular mouth without jaws?