Which one differs from Spirogyra based on its nucleus?

Agar is commercially obtained from

First plants to inhabit the land

Conifers can tolerate extreme environments because of

Double fertilization is the characteristic of

A colonial alga is

Pick the mismatched pair

Zygotic meiosis is the characteristic of

The plant group that posses the largest ovule, largest gametes, and largest tree

Plants having vascular tissue without seeds