Characteristics of Lancelets:
Small
Elongated
Marine invertebrate
Lacks a jaw
No sense organs
Has a notochord
Example: Lamprey
Characteristics of Tunicates:
Marine invertebrate
Has an outer coat that is rubbery or hard
Has two siphons
Examples: sea squirts, salps
I hope this is the answer that you were looking for.
The cell that has the nucleus is eukaryotic and the cell that doesn't have a nucleus is eukaryotic
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Answer:
Read the Quran. it tells you how did it begin
The answer is "At least 15".