Question

1) The slowest growing plants of the world are diatoms/lichens/cyanobacteria.​

Answer 1

Answer:

diatons and cyanobacteria are not plants

Answer 2

Slowest-flowering plant | Guinness World Records The slowest-flowering plant is the rare species of giant bromeliad Puya raimondii, discovered at a height of 3,960 m (12,992 ft) in the Bolivian mountains in 1870. The flower cluster emerges after about 80-150 years of the plant's life (it produces an immense vertical stalk or panicle bearing numerous flowers).