Concept:Non-vascular plants lack specialised conducting tissues such as xylem and phloem.
They include algae and bryophytes.
Explanation:The diagram shows I as
Marchantia, a liverwort belonging to the bryophytes.
II is
Spirogyra, a green alga belonging to the thallophytes.
III is
Dryopteris, a fern, and IV is a cycad, a gymnosperm.
Bryophytes and algae do not possess true vascular tissues.
Ferns, cycads, and flowering plants all have a well-developed vascular system.
Therefore, the non-vascular plants in the diagram are labelled I and II.
Answer:Option A: I and II.
