Explanation

The sporophyte of Riccia is the simplest among bryophytes.

It consists of only a capsule, missing both foot and seta

It does not perform photosynthesis.

Additional informational:

Riccia belongs to the class Liver Worts.

They have dorsoventrally flattened lobed plant bodies with unicellular rhizoids.

The mature sporophyte of Riccia is a globular capsule, embedded within the gametophytic plant and is without foot and seta