Hello to answer your question fully
<span>Archaebacteria
Because, </span><span>Archaebacteria is the oldest type of bacteria, which exist at the beginning of the world back when Oxygen still hasn't exist in its environment
Signed by, Expert Sargedog</span>
Five major Arthropod classes
Arachnida. mites, ticks, spiders, scorpions.
Chilopoda. Centipedes.
Crustacea. (crabs, lobsters, shrimp.
Diplopoda. Millipedes.
Hexapoda. Insects.
so your answer will be mollusks
Cells, the basic unit of life, are derived from spontaneous generation.