How are seeds of an apple and spores the fern slimilar?

The statement is false. Seeds of an apple and spores of a fern are not similar.

An apple seed contains a miniature plant with a root, a stem, and one or more leaves. It also has a food supply stored in the form of cotyledons. A fern spore is a single cell with a spore wall. It does not contain any of the structures found in a seed.

Apple seeds are used for reproduction, while fern spores are used for reproduction and dispersal.